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Differential D144509

[CMake] Bumps minimum version to 3.20.0.
ClosedPublic

Authored by Mordante on Feb 21 2023, 11:15 AM.

Details

Reviewers
bollu
tstellar
mehdi_amini
MaskRay
ChuanqiXu
to268
kparzysz
thieta
tschuett
mgorny
stellaraccident
mizvekov
ldionne
jdoerfert
phosek
rafauler
Amir
maksfb
NoQ
sivachandra
philnik
zibi
Group Reviewers
Restricted Project
Restricted Project
Restricted Project
Restricted Project
Restricted Project
Commits
rG44c6b905f852: [CMake] Bumps minimum version to 3.20.0.
Summary

This partly undoes D137724.

This change has been discussed on discourse
https://discourse.llvm.org/t/rfc-upgrading-llvms-minimum-required-cmake-version/66193

Note this does not remove work-arounds for older CMake versions, that
will be done in followup patches.

Diff Detail

Event Timeline

Mordante created this revision.Feb 21 2023, 11:15 AM
Herald added a reviewer: rafauler. · View Herald TranscriptFeb 21 2023, 11:15 AM
Herald added a reviewer: Amir. · View Herald Transcript
Herald added a reviewer: maksfb. · View Herald Transcript
Herald added a reviewer: NoQ. · View Herald Transcript
Herald added projects: Restricted Project, Restricted Project, Restricted Project, Restricted Project. · View Herald Transcript
Herald added a reviewer: Restricted Project. · View Herald Transcript
Herald added subscribers: libc-commits, libcxx-commits, Moerafaat and 26 others. · View Herald Transcript
Mordante published this revision for review.Feb 21 2023, 11:20 AM
Mordante added reviewers: Restricted Project, Restricted Project.
Herald added projects: Restricted Project, Restricted Project, Restricted Project, Restricted Project, Restricted Project, Restricted Project, Restricted Project, Restricted Project. · View Herald TranscriptFeb 21 2023, 11:20 AM
Herald added a reviewer: Restricted Project. · View Herald Transcript
Herald added a reviewer: Restricted Project. · View Herald Transcript
Herald added subscribers: llvm-commits, openmp-commits, lldb-commits and 5 others. · View Herald Transcript
sivachandra accepted this revision.Feb 21 2023, 11:23 AM
sivachandra added a subscriber: sivachandra.

OK for libc.

Herald added subscribers: sstefan1, JDevlieghere. · View Herald TranscriptFeb 21 2023, 11:23 AM
philnik accepted this revision.Feb 21 2023, 11:26 AM
phosek accepted this revision.Feb 21 2023, 11:35 AM

LGTM

This revision is now accepted and ready to land.Feb 21 2023, 11:35 AM
thieta accepted this revision as: thieta.Feb 21 2023, 12:47 PM
MaskRay accepted this revision as: MaskRay.Feb 21 2023, 12:59 PM
Harbormaster completed remote builds in B215074: Diff 499245.Feb 21 2023, 5:41 PM
ChuanqiXu accepted this revision.Feb 21 2023, 5:53 PM
to268 accepted this revision.Feb 22 2023, 3:45 AM
tschuett accepted this revision.Feb 22 2023, 3:48 AM
zibi accepted this revision.Feb 22 2023, 5:56 AM
phosek mentioned this in D143052: [CMake] Replace llvm_check_linker_flag and llvm_check_compiler_linker_flag.Feb 22 2023, 9:08 AM
Mordante updated this revision to Diff 499569.Feb 22 2023, 10:06 AM

Try to fix AIX CI.

Herald added a subscriber: mstorsjo. · View Herald TranscriptFeb 22 2023, 10:06 AM
mehdi_amini accepted this revision.Feb 22 2023, 10:25 AM
Harbormaster completed remote builds in B215307: Diff 499569.Feb 22 2023, 2:19 PM
sivachandra mentioned this in D143139: [libc] Remove a now uneccesary CMake policy..Feb 23 2023, 6:59 PM
nigelp-xmos added a subscriber: nigelp-xmos.Feb 24 2023, 1:27 AM
Mordante updated this revision to Diff 500547.Feb 26 2023, 4:47 AM

Rebased to test CI.

Harbormaster completed remote builds in B216039: Diff 500547.Feb 26 2023, 8:59 AM
This revision was landed with ongoing or failed builds.Mar 4 2023, 3:41 AM
Closed by commit rG44c6b905f852: [CMake] Bumps minimum version to 3.20.0. (authored by Mordante). · Explain Why
This revision was automatically updated to reflect the committed changes.
Mordante added a commit: rG44c6b905f852: [CMake] Bumps minimum version to 3.20.0..
Mordante added a reverting change: rG92523a35a827: Revert "[CMake] Bumps minimum version to 3.20.0.".Mar 4 2023, 9:29 AM
glandium added a subscriber: glandium.May 16 2023, 1:23 PM

FYI, 65429b9af6a2c99d340ab2dcddd41dab201f399c is causing problems on Windows compiler-rt for some reason I haven't identified yet (with cmake 3.25.1). Which suggests for a same version of cmake, this is actually altering its behavior, which I wouldn't have expected...

Herald added subscribers: bviyer, ekilmer, jplehr. · View Herald TranscriptMay 16 2023, 1:23 PM
mstorsjo added a comment.May 16 2023, 1:30 PM
In D144509#4347562, @glandium wrote:

FYI, 65429b9af6a2c99d340ab2dcddd41dab201f399c is causing problems on Windows compiler-rt for some reason I haven't identified yet (with cmake 3.25.1). Which suggests for a same version of cmake, this is actually altering its behavior, which I wouldn't have expected...

See D150688 - I believe that might fix the issue you're seeing, as that one mentions compiler-rt.

glandium added a comment.May 16 2023, 3:21 PM
In D144509#4347604, @mstorsjo wrote:

See D150688 - I believe that might fix the issue you're seeing, as that one mentions compiler-rt.

Unfortunately, it doesn't.

FWIW, the errors looks like:

lld-link: error: undefined symbol: __declspec(dllimport) _getpid
>>> referenced by clang_rt.profile-i386.lib(InstrProfilingFile.c.obj):(_getCurFilename)
>>> referenced by clang_rt.profile-i386.lib(InstrProfilingFile.c.obj):(_parseAndSetFilename)
>>> referenced by oldnames.lib(getpid.obi)

etc.

glandium added a comment.May 16 2023, 3:26 PM

It's related, though, because now that I look at my build logs, the difference between when it works and when it doesn't is /MT vs -MD when compiler-rt is compiled. The main peculiarity on our end, though, is that the Windows compiler-rt is cross-compiled.

glandium added a comment.May 16 2023, 4:04 PM

So the problem is that CMakePolicy.cmake is not included in compiler-rt/CMakeLists.txt.

dyung added a subscriber: dyung.May 17 2023, 1:44 AM

I'm not really sure where else to post this, but the pre-merge linux bot still seems to be running 3.18.4.

https://buildkite.com/llvm-project/premerge-checks/builds/152678#018828d2-1837-4fc2-baec-fca595969219

CMake Error at CMakeLists.txt:3 (cmake_minimum_required):
  CMake 3.20.0 or higher is required.  You are running version 3.18.4
hans added a subscriber: hans.May 17 2023, 1:54 AM
In D144509#4347562, @glandium wrote:

FYI, 65429b9af6a2c99d340ab2dcddd41dab201f399c is causing problems on Windows compiler-rt for some reason I haven't identified yet (with cmake 3.25.1). Which suggests for a same version of cmake, this is actually altering its behavior, which I wouldn't have expected...

It is indeed unfortunate that this seems to come with such a fundamental behavior change. (we already have https://github.com/llvm/llvm-project/issues/62719) Do you have a repro for the issue you're seeing?

Since the breakages are piling up, perhaps it's time to revert this.

mstorsjo added a comment.May 17 2023, 4:36 AM
In D144509#4349051, @hans wrote:
In D144509#4347562, @glandium wrote:

FYI, 65429b9af6a2c99d340ab2dcddd41dab201f399c is causing problems on Windows compiler-rt for some reason I haven't identified yet (with cmake 3.25.1). Which suggests for a same version of cmake, this is actually altering its behavior, which I wouldn't have expected...

It is indeed unfortunate that this seems to come with such a fundamental behavior change. (we already have https://github.com/llvm/llvm-project/issues/62719) Do you have a repro for the issue you're seeing?

Since the breakages are piling up, perhaps it's time to revert this.

Unfortunately, much of this is hard to sort out without actually trying to patch forward on main, since many of these issues don't show up easily in e.g. premerge testing or similar (the patch has been tried many times for months before in that form), so I'd appreciate if we'd give it a little more time to actually try to sort out the issues...

hans added a comment.May 17 2023, 7:40 AM
In D144509#4349399, @mstorsjo wrote:
In D144509#4349051, @hans wrote:
In D144509#4347562, @glandium wrote:

FYI, 65429b9af6a2c99d340ab2dcddd41dab201f399c is causing problems on Windows compiler-rt for some reason I haven't identified yet (with cmake 3.25.1). Which suggests for a same version of cmake, this is actually altering its behavior, which I wouldn't have expected...

It is indeed unfortunate that this seems to come with such a fundamental behavior change. (we already have https://github.com/llvm/llvm-project/issues/62719) Do you have a repro for the issue you're seeing?

Since the breakages are piling up, perhaps it's time to revert this.

Unfortunately, much of this is hard to sort out without actually trying to patch forward on main, since many of these issues don't show up easily in e.g. premerge testing or similar (the patch has been tried many times for months before in that form), so I'd appreciate if we'd give it a little more time to actually try to sort out the issues...

But now we have identified issues and there are reproducers available (e.g. on https://github.com/llvm/llvm-project/issues/62719). Keeping it in main is just disruptive and risks making reverting harder (it's already not a clean revert). I think the policy of reverting back to green still applies.

thakis mentioned this in rGd763c6e5e2d0: Revert "Reland "[CMake] Bumps minimum version to 3.20.0."".May 17 2023, 7:54 AM
thakis mentioned this in D150688: [cmake] Set CMP0091 to fix Windows builds after the cmake_minimum_required bump.May 17 2023, 7:55 AM
thakis added a subscriber: thakis.

Reverted this and follow-ups in d763c6e5e2d0a6b34097aa7dabca31e9aff9b0b6 for now.

Sorry this is such a pain to land :(

(See also discussion over in D150688)

Mordante added a comment.May 17 2023, 8:28 AM
In D144509#4349921, @thakis wrote:

Reverted this and follow-ups in d763c6e5e2d0a6b34097aa7dabca31e9aff9b0b6 for now.

Sorry this is such a pain to land :(

(See also discussion over in D150688)

I'm not happy that the patch needs to be reverted again.

It has taken me a lot of time to contact all buildbots maintainers to get all buildbots updated to the minimal CMake requirement.
Now that they are updated it turned out that one of the two last updated bots has an issue with this patch and that has been fixed. But now it seems to break Chromium. I don't have access to Windows so I don't know how I can test patches.

Do you have a suggestion how we can move this patch forward?

thakis added a comment.May 17 2023, 8:51 AM

https://github.com/llvm/llvm-project/issues/62719 is independent of chromium and others have reported problems above too, from what I understand. Is that not accurate?

Mordante added a comment.May 17 2023, 9:19 AM
In D144509#4349017, @dyung wrote:

I'm not really sure where else to post this, but the pre-merge linux bot still seems to be running 3.18.4.

https://buildkite.com/llvm-project/premerge-checks/builds/152678#018828d2-1837-4fc2-baec-fca595969219

CMake Error at CMakeLists.txt:3 (cmake_minimum_required):
  CMake 3.20.0 or higher is required.  You are running version 3.18.4

Thanks, I've notified the owner of the build bot.

Mordante added a comment.May 17 2023, 9:29 AM
In D144509#4350148, @thakis wrote:

https://github.com/llvm/llvm-project/issues/62719 is independent of chromium and others have reported problems above too, from what I understand. Is that not accurate?

That bug report originally was independent of Chromium, that part was fixed by D150688. This wasn't noticed earlier since that happened on one of the buildbots that took the longest to update. For the earlier failed landings there was never a notification this patch caused issues on Chromium, so I'm quite taken by surprise.

The other issues I see are build errors on Chromium, unless I missed something.

thakis added a comment.May 17 2023, 9:36 AM

Is https://reviews.llvm.org/D144509#4347562 fixed?

glandium added a comment.May 17 2023, 1:29 PM
In D144509#4349051, @hans wrote:
In D144509#4347562, @glandium wrote:

FYI, 65429b9af6a2c99d340ab2dcddd41dab201f399c is causing problems on Windows compiler-rt for some reason I haven't identified yet (with cmake 3.25.1). Which suggests for a same version of cmake, this is actually altering its behavior, which I wouldn't have expected...

It is indeed unfortunate that this seems to come with such a fundamental behavior change. (we already have https://github.com/llvm/llvm-project/issues/62719) Do you have a repro for the issue you're seeing?

The Chromium issue that is discussed there is essentially the same thing I was seeing.

hans added a comment.May 19 2023, 6:06 AM
In D144509#4350052, @Mordante wrote:
In D144509#4349921, @thakis wrote:

Reverted this and follow-ups in d763c6e5e2d0a6b34097aa7dabca31e9aff9b0b6 for now.

Sorry this is such a pain to land :(

(See also discussion over in D150688)

I'm not happy that the patch needs to be reverted again.

It has taken me a lot of time to contact all buildbots maintainers to get all buildbots updated to the minimal CMake requirement.

I sympathize with this, but I still believe reverting in these situations is the right thing to do. It reduces disruption for everyone who needs their builds to keep working, while allowing the failures to be investigated without the pressure of knowing that head is currently broken. That this patch has been hard to land is in the nature of the change itself.

Now that they are updated it turned out that one of the two last updated bots has an issue with this patch and that has been fixed. But now it seems to break Chromium. I don't have access to Windows so I don't know how I can test patches.

I'm happy to test patches on my Windows machine.

Do you have a suggestion how we can move this patch forward?

IIRC, D150688 + the diff in https://github.com/llvm/llvm-project/issues/62719#issuecomment-1552903385 + upgrading the pre-merge linux bot should take care of all known issues.

Mordante added a comment.May 19 2023, 9:17 AM
In D144509#4356160, @hans wrote:
In D144509#4350052, @Mordante wrote:
In D144509#4349921, @thakis wrote:

Reverted this and follow-ups in d763c6e5e2d0a6b34097aa7dabca31e9aff9b0b6 for now.

Sorry this is such a pain to land :(

(See also discussion over in D150688)

I'm not happy that the patch needs to be reverted again.

It has taken me a lot of time to contact all buildbots maintainers to get all buildbots updated to the minimal CMake requirement.

I sympathize with this, but I still believe reverting in these situations is the right thing to do. It reduces disruption for everyone who needs their builds to keep working, while allowing the failures to be investigated without the pressure of knowing that head is currently broken. That this patch has been hard to land is in the nature of the change itself.

I'm caught quite off-guard that it seems the LLVM buildbots don't cover our Windows support that well. It would also be great to know how we can improve the process to update dependency versions. The current way does not really encourage me to propose LLVM wide updates again.

Now that they are updated it turned out that one of the two last updated bots has an issue with this patch and that has been fixed. But now it seems to break Chromium. I don't have access to Windows so I don't know how I can test patches.

I'm happy to test patches on my Windows machine.

Thanks!

Do you have a suggestion how we can move this patch forward?

IIRC, D150688 + the diff in https://github.com/llvm/llvm-project/issues/62719#issuecomment-1552903385 + upgrading the pre-merge linux bot should take care of all known issues.

Would it make sense to put all these patches in one new review and then test that on Chromium and ask @glandium to test that too. Then we know whether it solves the issues. Do you want me to make a patch or do you want to do it?

mnadeem added a subscriber: mnadeem.May 19 2023, 10:10 AM
hans added a comment.May 22 2023, 4:33 AM

Do you have a suggestion how we can move this patch forward?

IIRC, D150688 + the diff in https://github.com/llvm/llvm-project/issues/62719#issuecomment-1552903385 + upgrading the pre-merge linux bot should take care of all known issues.

Would it make sense to put all these patches in one new review and then test that on Chromium and ask @glandium to test that too. Then we know whether it solves the issues. Do you want me to make a patch or do you want to do it?

I tested https://github.com/llvm/llvm-project/issues/62719#issuecomment-1552903385 on Chromium already, and that looks good.

Mordante added a comment.May 24 2023, 9:19 AM

I've created D151344 @glandium @hans @thakis I really would appreciate when you can test the patch locally to avoid another revert round.

mstorsjo mentioned this in D151344: Reland "[CMake] Bumps minimum version to 3.20.0..May 25 2023, 9:09 PM
Mordante mentioned this in rGcbaa3597aaf6: Reland "[CMake] Bumps minimum version to 3.20.0..May 27 2023, 3:51 AM

Revision Contents

PathSize
bolt/
runtime/
2 lines
clang/
9 lines
tools/
scan-build-py/
tests/
functional/
exec/
2 lines
compiler-rt/
9 lines
lib/
builtins/
9 lines
crt/
9 lines
flang/
9 lines
lib/
Decimal/
2 lines
runtime/
9 lines
libc/
2 lines
examples/
hello_world/
2 lines
libclc/
2 lines
libcxx/
2 lines
libcxxabi/
2 lines
libunwind/
2 lines
src/
3 lines
lld/
9 lines
lldb/
9 lines
tools/
debugserver/
9 lines
llvm-libgcc/
2 lines
llvm/
9 lines
docs/
4 lines
2 lines
5 lines
mlir/
9 lines
examples/
standalone/
2 lines
openmp/
9 lines
cmake/
DetectTestCompiler/
2 lines
docs/
4 lines
libompd/
src/
2 lines
libomptarget/
plugins/
remote/
src/
2 lines
runtime/
cmake/
2 lines
tools/
Modules/
2 lines
4 lines
polly/
9 lines
pstl/
2 lines
runtimes/
9 lines

Diff 502367

bolt/runtime/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
include(CheckIncludeFiles) include(CheckIncludeFiles)
include(GNUInstallDirs) include(GNUInstallDirs)
set(CMAKE_CXX_EXTENSIONS OFF) set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
project(libbolt_rt_project) project(libbolt_rt_project)
▲ Show 20 Lines • Show All 44 Lines • Show Last 20 Lines

clang/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS) if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS)
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
endif() endif()
include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake
NO_POLICY_SCOPE) NO_POLICY_SCOPE)
# If we are not building as a part of LLVM, build Clang as an # If we are not building as a part of LLVM, build Clang as an
# standalone project, using LLVM as an external library: # standalone project, using LLVM as an external library:
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
project(Clang) project(Clang)
set(CLANG_BUILT_STANDALONE TRUE) set(CLANG_BUILT_STANDALONE TRUE)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
endif() endif()
# Must go below project(..) # Must go below project(..)
include(GNUInstallDirs) include(GNUInstallDirs)
if(CLANG_BUILT_STANDALONE) if(CLANG_BUILT_STANDALONE)
set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to") set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to")
set(CMAKE_CXX_STANDARD_REQUIRED YES) set(CMAKE_CXX_STANDARD_REQUIRED YES)
▲ Show 20 Lines • Show All 947 Lines • Show Last 20 Lines

clang/tools/scan-build-py/tests/functional/exec/CMakeLists.txt

project(exec C) project(exec C)
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
include(CheckCCompilerFlag) include(CheckCCompilerFlag)
check_c_compiler_flag("-std=c99" C99_SUPPORTED) check_c_compiler_flag("-std=c99" C99_SUPPORTED)
if (C99_SUPPORTED) if (C99_SUPPORTED)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99") set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")
endif() endif()
include(CheckFunctionExists) include(CheckFunctionExists)
Show All 21 Lines

compiler-rt/CMakeLists.txt

# CMake build for CompilerRT. # CMake build for CompilerRT.
# #
# An important constraint of the build is that it only produces libraries # An important constraint of the build is that it only produces libraries
# based on the ability of the host toolchain to target various platforms. # based on the ability of the host toolchain to target various platforms.
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
# Check if compiler-rt is built as a standalone project. # Check if compiler-rt is built as a standalone project.
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR COMPILER_RT_STANDALONE_BUILD) if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR COMPILER_RT_STANDALONE_BUILD)
project(CompilerRT C CXX ASM) project(CompilerRT C CXX ASM)
set(COMPILER_RT_STANDALONE_BUILD TRUE) set(COMPILER_RT_STANDALONE_BUILD TRUE)
set_property(GLOBAL PROPERTY USE_FOLDERS ON) set_property(GLOBAL PROPERTY USE_FOLDERS ON)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
endif() endif()
set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake") set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
# Add path for custom compiler-rt modules. # Add path for custom compiler-rt modules.
list(INSERT CMAKE_MODULE_PATH 0 list(INSERT CMAKE_MODULE_PATH 0
"${CMAKE_CURRENT_SOURCE_DIR}/cmake" "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
▲ Show 20 Lines • Show All 759 Lines • Show Last 20 Lines

compiler-rt/lib/builtins/CMakeLists.txt

# This directory contains a large amount of C code which provides # This directory contains a large amount of C code which provides
# generic implementations of the core runtime library along with optimized # generic implementations of the core runtime library along with optimized
# architecture-specific code in various subdirectories. # architecture-specific code in various subdirectories.
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY) set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
project(CompilerRTBuiltins C ASM) project(CompilerRTBuiltins C ASM)
set(COMPILER_RT_STANDALONE_BUILD TRUE) set(COMPILER_RT_STANDALONE_BUILD TRUE)
set(COMPILER_RT_BUILTINS_STANDALONE_BUILD TRUE) set(COMPILER_RT_BUILTINS_STANDALONE_BUILD TRUE)
set(COMPILER_RT_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..") set(COMPILER_RT_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
▲ Show 20 Lines • Show All 865 Lines • Show Last 20 Lines

compiler-rt/lib/crt/CMakeLists.txt

if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY) set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
project(CompilerRTCRT C) project(CompilerRTCRT C)
set(COMPILER_RT_STANDALONE_BUILD TRUE) set(COMPILER_RT_STANDALONE_BUILD TRUE)
set(COMPILER_RT_CRT_STANDALONE_BUILD TRUE) set(COMPILER_RT_CRT_STANDALONE_BUILD TRUE)
set(COMPILER_RT_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..") set(COMPILER_RT_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
▲ Show 20 Lines • Show All 53 Lines • Show Last 20 Lines

flang/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS) if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS)
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
endif() endif()
include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake
NO_POLICY_SCOPE) NO_POLICY_SCOPE)
set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON) set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON)
Show All 16 Lines
option(FLANG_ENABLE_WERROR "Fail and stop building flang if a warning is triggered." OFF) option(FLANG_ENABLE_WERROR "Fail and stop building flang if a warning is triggered." OFF)
# Check for a standalone build and configure as appropriate from # Check for a standalone build and configure as appropriate from
# there. # there.
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
message("Building Flang as a standalone project.") message("Building Flang as a standalone project.")
project(Flang) project(Flang)
set(FLANG_STANDALONE_BUILD ON) set(FLANG_STANDALONE_BUILD ON)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
else() else()
set(FLANG_STANDALONE_BUILD OFF) set(FLANG_STANDALONE_BUILD OFF)
endif() endif()
# Must go below project(..) # Must go below project(..)
include(GNUInstallDirs) include(GNUInstallDirs)
# MSVC + clang-cl build requires clang_rt.builtin.${target} library # MSVC + clang-cl build requires clang_rt.builtin.${target} library
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flang/lib/Decimal/CMakeLists.txt

if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
project(FortranDecimal C CXX) project(FortranDecimal C CXX)
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE) set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
set(CMAKE_CXX_EXTENSIONS OFF) set(CMAKE_CXX_EXTENSIONS OFF)
set(FLANG_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..") set(FLANG_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
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flang/runtime/CMakeLists.txt

#===-- runtime/CMakeLists.txt ----------------------------------------------===# #===-- runtime/CMakeLists.txt ----------------------------------------------===#
# #
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information. # See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
# #
#===------------------------------------------------------------------------===# #===------------------------------------------------------------------------===#
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
project(FlangRuntime C CXX) project(FlangRuntime C CXX)
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE) set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
set(CMAKE_CXX_EXTENSIONS OFF) set(CMAKE_CXX_EXTENSIONS OFF)
set(FLANG_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/..") set(FLANG_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/..")
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libc/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
# Default to C++17 # Default to C++17
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules") list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules")
# The top-level sourse and binary directories. # The top-level sourse and binary directories.
set(LIBC_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) set(LIBC_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
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libc/examples/hello_world/CMakeLists.txt

project(hello_world) project(hello_world)
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
include(../examples.cmake) include(../examples.cmake)
add_example( add_example(
hello_world hello_world
hello_world.c hello_world.c
) )

libclc/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
project( libclc VERSION 0.2.0 LANGUAGES CXX C) project( libclc VERSION 0.2.0 LANGUAGES CXX C)
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
include( GNUInstallDirs ) include( GNUInstallDirs )
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS
amdgcn-amdhsa/lib/SOURCES; amdgcn-amdhsa/lib/SOURCES;
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libcxx/CMakeLists.txt

# See https://libcxx.llvm.org/docs/BuildingLibcxx.html for instructions on how # See https://libcxx.llvm.org/docs/BuildingLibcxx.html for instructions on how
# to build libcxx with CMake. # to build libcxx with CMake.
#=============================================================================== #===============================================================================
# Setup Project # Setup Project
#=============================================================================== #===============================================================================
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake") set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
# Add path for custom modules # Add path for custom modules
list(INSERT CMAKE_MODULE_PATH 0 list(INSERT CMAKE_MODULE_PATH 0
"${CMAKE_CURRENT_SOURCE_DIR}/cmake" "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
"${CMAKE_CURRENT_SOURCE_DIR}/../runtimes/cmake/Modules" "${CMAKE_CURRENT_SOURCE_DIR}/../runtimes/cmake/Modules"
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libcxxabi/CMakeLists.txt

# See www/CMake.html for instructions on how to build libcxxabi with CMake. # See www/CMake.html for instructions on how to build libcxxabi with CMake.
#=============================================================================== #===============================================================================
# Setup Project # Setup Project
#=============================================================================== #===============================================================================
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake") set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
# Add path for custom modules # Add path for custom modules
list(INSERT CMAKE_MODULE_PATH 0 list(INSERT CMAKE_MODULE_PATH 0
"${CMAKE_CURRENT_SOURCE_DIR}/cmake" "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
"${CMAKE_CURRENT_SOURCE_DIR}/../runtimes/cmake/Modules" "${CMAKE_CURRENT_SOURCE_DIR}/../runtimes/cmake/Modules"
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libunwind/CMakeLists.txt

#=============================================================================== #===============================================================================
# Setup Project # Setup Project
#=============================================================================== #===============================================================================
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake") set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
# Add path for custom modules # Add path for custom modules
list(INSERT CMAKE_MODULE_PATH 0 list(INSERT CMAKE_MODULE_PATH 0
"${CMAKE_CURRENT_SOURCE_DIR}/cmake" "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
"${CMAKE_CURRENT_SOURCE_DIR}/../runtimes/cmake/Modules" "${CMAKE_CURRENT_SOURCE_DIR}/../runtimes/cmake/Modules"
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libunwind/src/CMakeLists.txt

Show All 29 Linesset(LIBUNWIND_ASM_SOURCES
UnwindRegistersRestore.S UnwindRegistersRestore.S
UnwindRegistersSave.S UnwindRegistersSave.S
) )
# See add_asm_sources() in compiler-rt for explanation of this workaround. # See add_asm_sources() in compiler-rt for explanation of this workaround.
# CMake doesn't work correctly with assembly on AIX. Workaround by compiling # CMake doesn't work correctly with assembly on AIX. Workaround by compiling
# as C files as well. # as C files as well.
if((APPLE AND CMAKE_VERSION VERSION_LESS 3.19) OR if((APPLE AND CMAKE_VERSION VERSION_LESS 3.19) OR
(MINGW AND CMAKE_VERSION VERSION_LESS 3.17) OR (MINGW AND CMAKE_VERSION VERSION_LESS 3.17))
(${CMAKE_SYSTEM_NAME} MATCHES "AIX"))
set_source_files_properties(${LIBUNWIND_ASM_SOURCES} PROPERTIES LANGUAGE C) set_source_files_properties(${LIBUNWIND_ASM_SOURCES} PROPERTIES LANGUAGE C)
endif() endif()
set(LIBUNWIND_HEADERS set(LIBUNWIND_HEADERS
AddressSpace.hpp AddressSpace.hpp
assembly.h assembly.h
CompactUnwinder.hpp CompactUnwinder.hpp
cet_unwind.h cet_unwind.h
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lld/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS) if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS)
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
endif() endif()
include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake
NO_POLICY_SCOPE) NO_POLICY_SCOPE)
# If we are not building as a part of LLVM, build LLD as an # If we are not building as a part of LLVM, build LLD as an
# standalone project, using LLVM as an external library: # standalone project, using LLVM as an external library:
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
project(lld) project(lld)
set(LLD_BUILT_STANDALONE TRUE) set(LLD_BUILT_STANDALONE TRUE)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
endif() endif()
# Must go below project(..) # Must go below project(..)
include(GNUInstallDirs) include(GNUInstallDirs)
if(LLD_BUILT_STANDALONE) if(LLD_BUILT_STANDALONE)
set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to") set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to")
set(CMAKE_CXX_STANDARD_REQUIRED YES) set(CMAKE_CXX_STANDARD_REQUIRED YES)
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lldb/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS) if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS)
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
endif() endif()
include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake
NO_POLICY_SCOPE) NO_POLICY_SCOPE)
# Add path for custom modules. # Add path for custom modules.
set(CMAKE_MODULE_PATH set(CMAKE_MODULE_PATH
${CMAKE_MODULE_PATH} ${CMAKE_MODULE_PATH}
"${CMAKE_CURRENT_SOURCE_DIR}/cmake" "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules"
) )
# If we are not building as part of LLVM, build LLDB as a standalone project, # If we are not building as part of LLVM, build LLDB as a standalone project,
# using LLVM as an external library. # using LLVM as an external library.
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
project(lldb) project(lldb)
set(LLDB_BUILT_STANDALONE TRUE) set(LLDB_BUILT_STANDALONE TRUE)
set(LLVM_INCLUDE_TESTS ON CACHE INTERNAL "") set(LLVM_INCLUDE_TESTS ON CACHE INTERNAL "")
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
endif() endif()
# Must go below project(..) # Must go below project(..)
include(GNUInstallDirs) include(GNUInstallDirs)
option(LLDB_INCLUDE_TESTS "Generate build targets for the LLDB unit tests." ${LLVM_INCLUDE_TESTS}) option(LLDB_INCLUDE_TESTS "Generate build targets for the LLDB unit tests." ${LLVM_INCLUDE_TESTS})
if(LLDB_BUILT_STANDALONE) if(LLDB_BUILT_STANDALONE)
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lldb/tools/debugserver/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
project(Debugserver LANGUAGES C CXX ASM-ATT) project(Debugserver LANGUAGES C CXX ASM-ATT)
# Must go below project(..) # Must go below project(..)
include(GNUInstallDirs) include(GNUInstallDirs)
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
set(LLDB_BUILT_STANDALONE TRUE) set(LLDB_BUILT_STANDALONE TRUE)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
set(CMAKE_MODULE_PATH set(CMAKE_MODULE_PATH
${CMAKE_MODULE_PATH} ${CMAKE_MODULE_PATH}
"${CMAKE_SOURCE_DIR}/../../cmake" "${CMAKE_SOURCE_DIR}/../../cmake"
"${CMAKE_SOURCE_DIR}/../../cmake/modules" "${CMAKE_SOURCE_DIR}/../../cmake/modules"
) )
include(LLDBStandalone) include(LLDBStandalone)
Show All 13 Lines

llvm-libgcc/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if (NOT IS_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}/../libunwind") if (NOT IS_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}/../libunwind")
message(FATAL_ERROR "llvm-libgcc requires being built in a monorepo layout with libunwind available") message(FATAL_ERROR "llvm-libgcc requires being built in a monorepo layout with libunwind available")
endif() endif()
set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake") set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
list(APPEND CMAKE_MODULE_PATH list(APPEND CMAKE_MODULE_PATH
Show All 33 Lines

llvm/CMakeLists.txt

# See docs/CMake.html for instructions about how to build LLVM with CMake. # See docs/CMake.html for instructions about how to build LLVM with CMake.
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake
NO_POLICY_SCOPE) NO_POLICY_SCOPE)
set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON) set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON)
if(NOT DEFINED LLVM_VERSION_MAJOR) if(NOT DEFINED LLVM_VERSION_MAJOR)
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llvm/docs/CMake.rst

Show All 28 Lines
.. _Quick start: .. _Quick start:
Quick start Quick start
=========== ===========
We use here the command-line, non-interactive CMake interface. We use here the command-line, non-interactive CMake interface.
#. `Download <http://www.cmake.org/cmake/resources/software.html>`_ and install #. `Download <http://www.cmake.org/cmake/resources/software.html>`_ and install
CMake. Version 3.13.4 is the minimum required. CMake. Version 3.20.0 is the minimum required.
#. Open a shell. Your development tools must be reachable from this shell #. Open a shell. Your development tools must be reachable from this shell
through the PATH environment variable. through the PATH environment variable.
#. Create a build directory. Building LLVM in the source #. Create a build directory. Building LLVM in the source
directory is not supported. cd to this directory: directory is not supported. cd to this directory:
.. code-block:: console .. code-block:: console
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CMake to develop their own LLVM-based projects against an installed version of CMake to develop their own LLVM-based projects against an installed version of
LLVM regardless of how it was built. LLVM regardless of how it was built.
Here is a simple example of a CMakeLists.txt file that imports the LLVM libraries Here is a simple example of a CMakeLists.txt file that imports the LLVM libraries
and uses them to build a simple application ``simple-tool``. and uses them to build a simple application ``simple-tool``.
.. code-block:: cmake .. code-block:: cmake
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
project(SimpleProject) project(SimpleProject)
find_package(LLVM REQUIRED CONFIG) find_package(LLVM REQUIRED CONFIG)
message(STATUS "Found LLVM ${LLVM_PACKAGE_VERSION}") message(STATUS "Found LLVM ${LLVM_PACKAGE_VERSION}")
message(STATUS "Using LLVMConfig.cmake in: ${LLVM_DIR}") message(STATUS "Using LLVMConfig.cmake in: ${LLVM_DIR}")
# Set your project compile flags. # Set your project compile flags.
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llvm/docs/GettingStarted.rst

Show First 20 Lines • Show All 257 Lines • ▼ Show 20 Lines
table below lists those required packages. The Package column is the usual name table below lists those required packages. The Package column is the usual name
for the software package that LLVM depends on. The Version column provides for the software package that LLVM depends on. The Version column provides
"known to work" versions of the package. The Notes column describes how LLVM "known to work" versions of the package. The Notes column describes how LLVM
uses the package and provides other details. uses the package and provides other details.
=========================================================== ============ ========================================== =========================================================== ============ ==========================================
Package Version Notes Package Version Notes
=========================================================== ============ ========================================== =========================================================== ============ ==========================================
`CMake <http://cmake.org/>`__ >=3.13.4 Makefile/workspace generator `CMake <http://cmake.org/>`__ >=3.20.0 Makefile/workspace generator
`GCC <http://gcc.gnu.org/>`_ >=7.1.0 C/C++ compiler\ :sup:`1` `GCC <http://gcc.gnu.org/>`_ >=7.1.0 C/C++ compiler\ :sup:`1`
`python <http://www.python.org/>`_ >=3.6 Automated test suite\ :sup:`2` `python <http://www.python.org/>`_ >=3.6 Automated test suite\ :sup:`2`
`zlib <http://zlib.net>`_ >=1.2.3.4 Compression library\ :sup:`3` `zlib <http://zlib.net>`_ >=1.2.3.4 Compression library\ :sup:`3`
`GNU Make <http://savannah.gnu.org/projects/make>`_ 3.79, 3.79.1 Makefile/build processor\ :sup:`4` `GNU Make <http://savannah.gnu.org/projects/make>`_ 3.79, 3.79.1 Makefile/build processor\ :sup:`4`
=========================================================== ============ ========================================== =========================================================== ============ ==========================================
.. note:: .. note::
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llvm/docs/ReleaseNotes.rst

Show First 20 Lines • Show All 41 Lines • ▼ Show 20 Lines.. NOTE
functionality, or simply have a lot to talk about), see the `NOTE` below functionality, or simply have a lot to talk about), see the `NOTE` below
for adding a new subsection. for adding a new subsection.
* ... * ...
Update on required toolchains to build LLVM Update on required toolchains to build LLVM
------------------------------------------- -------------------------------------------
With LLVM 17.x we raised the version requirement of CMake used to build LLVM.
The new requirements are as follows:
* CMake >= 3.20.0
Changes to the LLVM IR Changes to the LLVM IR
---------------------- ----------------------
* Typed pointers are no longer supported. See the `opaque pointers * Typed pointers are no longer supported. See the `opaque pointers
<OpaquePointers.html>`__ documentation for migration instructions. <OpaquePointers.html>`__ documentation for migration instructions.
* The ``nofpclass`` attribute was introduced. This allows more * The ``nofpclass`` attribute was introduced. This allows more
optimizations around special floating point value comparisons. optimizations around special floating point value comparisons.
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mlir/CMakeLists.txt

# MLIR project. # MLIR project.
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS) if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS)
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
endif() endif()
include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake
NO_POLICY_SCOPE) NO_POLICY_SCOPE)
# Check if MLIR is built as a standalone project. # Check if MLIR is built as a standalone project.
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
project(mlir) project(mlir)
set(MLIR_STANDALONE_BUILD TRUE) set(MLIR_STANDALONE_BUILD TRUE)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
endif() endif()
# Must go below project(..) # Must go below project(..)
include(GNUInstallDirs) include(GNUInstallDirs)
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
if(MLIR_STANDALONE_BUILD) if(MLIR_STANDALONE_BUILD)
find_package(LLVM CONFIG REQUIRED) find_package(LLVM CONFIG REQUIRED)
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mlir/examples/standalone/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
project(standalone-dialect LANGUAGES CXX C) project(standalone-dialect LANGUAGES CXX C)
set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON) set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON)
set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to") set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to")
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
find_package(MLIR REQUIRED CONFIG) find_package(MLIR REQUIRED CONFIG)
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openmp/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
# Add path for custom modules # Add path for custom modules
list(INSERT CMAKE_MODULE_PATH 0 list(INSERT CMAKE_MODULE_PATH 0
"${CMAKE_CURRENT_SOURCE_DIR}/cmake" "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
"${LLVM_COMMON_CMAKE_UTILS}/Modules" "${LLVM_COMMON_CMAKE_UTILS}/Modules"
) )
# llvm/runtimes/ will set OPENMP_STANDALONE_BUILD. # llvm/runtimes/ will set OPENMP_STANDALONE_BUILD.
if (OPENMP_STANDALONE_BUILD OR "${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}") if (OPENMP_STANDALONE_BUILD OR "${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
set(OPENMP_STANDALONE_BUILD TRUE) set(OPENMP_STANDALONE_BUILD TRUE)
project(openmp C CXX) project(openmp C CXX)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
endif() endif()
# Must go below project(..) # Must go below project(..)
include(GNUInstallDirs) include(GNUInstallDirs)
if (OPENMP_STANDALONE_BUILD) if (OPENMP_STANDALONE_BUILD)
# CMAKE_BUILD_TYPE was not set, default to Release. # CMAKE_BUILD_TYPE was not set, default to Release.
if (NOT CMAKE_BUILD_TYPE) if (NOT CMAKE_BUILD_TYPE)
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openmp/cmake/DetectTestCompiler/CMakeLists.txt

cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
project(DetectTestCompiler C CXX) project(DetectTestCompiler C CXX)
include(CheckCCompilerFlag) include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag) include(CheckCXXCompilerFlag)
include(CheckIncludeFile) include(CheckIncludeFile)
include(CheckIncludeFileCXX) include(CheckIncludeFileCXX)
function(write_compiler_information lang) function(write_compiler_information lang)
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openmp/docs/SupportAndFAQ.rst

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To use this module, simply add the path to CMake's current module path and call To use this module, simply add the path to CMake's current module path and call
``find_package``. The module will be installed with your OpenMP installation by ``find_package``. The module will be installed with your OpenMP installation by
default. Including OpenMP offloading support in an application should now only default. Including OpenMP offloading support in an application should now only
require a few additions. require a few additions.
.. code-block:: cmake .. code-block:: cmake
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
project(offloadTest VERSION 1.0 LANGUAGES CXX) project(offloadTest VERSION 1.0 LANGUAGES CXX)
list(APPEND CMAKE_MODULE_PATH "${PATH_TO_OPENMP_INSTALL}/lib/cmake/openmp") list(APPEND CMAKE_MODULE_PATH "${PATH_TO_OPENMP_INSTALL}/lib/cmake/openmp")
find_package(OpenMPTarget REQUIRED NVPTX) find_package(OpenMPTarget REQUIRED NVPTX)
add_executable(offload) add_executable(offload)
target_link_libraries(offload PRIVATE OpenMPTarget::OpenMPTarget_NVPTX) target_link_libraries(offload PRIVATE OpenMPTarget::OpenMPTarget_NVPTX)
target_sources(offload PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src/Main.cpp) target_sources(offload PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src/Main.cpp)
Using this module requires at least CMake version 3.13.4. Supported languages Using this module requires at least CMake version 3.20.0. Supported languages
are C and C++ with Fortran support planned in the future. Compiler support is are C and C++ with Fortran support planned in the future. Compiler support is
best for Clang but this module should work for other compiler vendors such as best for Clang but this module should work for other compiler vendors such as
IBM, GNU. IBM, GNU.
Q: What does 'Stack size for entry function cannot be statically determined' mean? Q: What does 'Stack size for entry function cannot be statically determined' mean?
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This is a warning that the Nvidia tools will sometimes emit if the offloading This is a warning that the Nvidia tools will sometimes emit if the offloading
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openmp/libompd/src/CMakeLists.txt

# #
#//===----------------------------------------------------------------------===// #//===----------------------------------------------------------------------===//
#// #//
#// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. #// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
#// See https://llvm.org/LICENSE.txt for license information. #// See https://llvm.org/LICENSE.txt for license information.
#// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception #// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#// #//
#//===----------------------------------------------------------------------===// #//===----------------------------------------------------------------------===//
# #
project (libompd) project (libompd)
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
add_library (ompd SHARED TargetValue.cpp omp-debug.cpp omp-state.cpp omp-icv.cpp) add_library (ompd SHARED TargetValue.cpp omp-debug.cpp omp-state.cpp omp-icv.cpp)
target_link_libraries(ompd omp) # ensure generated import library is created first target_link_libraries(ompd omp) # ensure generated import library is created first
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(LIBOMPD_LD_STD_FLAGS FALSE CACHE BOOL set(LIBOMPD_LD_STD_FLAGS FALSE CACHE BOOL
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openmp/libomptarget/plugins/remote/src/CMakeLists.txt

##===----------------------------------------------------------------------===## ##===----------------------------------------------------------------------===##
# #
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information. # See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
# #
##===----------------------------------------------------------------------===## ##===----------------------------------------------------------------------===##
# #
# Build a plugin for remote offloading. # Build a plugin for remote offloading.
# #
##===----------------------------------------------------------------------===## ##===----------------------------------------------------------------------===##
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
# Define the suffix for the runtime messaging dumps. # Define the suffix for the runtime messaging dumps.
add_definitions(-DTARGET_NAME=RPC) add_definitions(-DTARGET_NAME=RPC)
include_directories(${LIBOMPTARGET_SRC_DIR}) include_directories(${LIBOMPTARGET_SRC_DIR})
include_directories(${LIBOMPTARGET_INCLUDE_DIR}) include_directories(${LIBOMPTARGET_INCLUDE_DIR})
include_directories(${GRPC_INCLUDE_DIR}) include_directories(${GRPC_INCLUDE_DIR})
include_directories(${RPC_INCLUDE_DIR}) include_directories(${RPC_INCLUDE_DIR})
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openmp/runtime/cmake/LibompCheckLinkerFlag.cmake

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# There is no real trivial way to do this in CMake, so we implement it here # There is no real trivial way to do this in CMake, so we implement it here
# this will have ${boolean} = TRUE if the flag succeeds, otherwise FALSE. # this will have ${boolean} = TRUE if the flag succeeds, otherwise FALSE.
function(libomp_check_linker_flag flag boolean) function(libomp_check_linker_flag flag boolean)
if(NOT DEFINED "${boolean}") if(NOT DEFINED "${boolean}")
set(retval TRUE) set(retval TRUE)
set(library_source set(library_source
"int foo(int a) { return a*a; }") "int foo(int a) { return a*a; }")
set(cmake_source set(cmake_source
"cmake_minimum_required(VERSION 3.13.4) "cmake_minimum_required(VERSION 3.20.0)
project(foo C) project(foo C)
set(CMAKE_SHARED_LINKER_FLAGS \"${flag}\") set(CMAKE_SHARED_LINKER_FLAGS \"${flag}\")
add_library(foo SHARED src_to_link.c)") add_library(foo SHARED src_to_link.c)")
# Compiling as a part of runtimes introduces ARCH-unknown-linux-gnu as a part # Compiling as a part of runtimes introduces ARCH-unknown-linux-gnu as a part
# of a working directory. So adding a guard for unknown. # of a working directory. So adding a guard for unknown.
set(failed_regexes "[Ee]rror;[Uu]nknown[^-];[Ss]kipping;LINK : warning;Unsupported command line") set(failed_regexes "[Ee]rror;[Uu]nknown[^-];[Ss]kipping;LINK : warning;Unsupported command line")
set(base_dir ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/link_flag_check_${boolean}) set(base_dir ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/link_flag_check_${boolean})
file(MAKE_DIRECTORY ${base_dir}) file(MAKE_DIRECTORY ${base_dir})
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openmp/tools/Modules/FindOpenMPTarget.cmake

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# TODO: Support Fortran # TODO: Support Fortran
# TODO: Support multiple offloading targets by setting the "OpenMPTarget" target # TODO: Support multiple offloading targets by setting the "OpenMPTarget" target
# to include flags for all components loaded # to include flags for all components loaded
# TODO: Configure target architecture without a variable (component NVPTX_SM_70) # TODO: Configure target architecture without a variable (component NVPTX_SM_70)
# TODO: Test more compilers # TODO: Test more compilers
cmake_policy(PUSH) cmake_policy(PUSH)
cmake_policy(VERSION 3.13.4) cmake_policy(VERSION 3.20.0)
find_package(OpenMP ${OpenMPTarget_FIND_VERSION} REQUIRED) find_package(OpenMP ${OpenMPTarget_FIND_VERSION} REQUIRED)
# Find the offloading flags for each compiler. # Find the offloading flags for each compiler.
function(_OPENMP_TARGET_DEVICE_FLAG_CANDIDATES LANG DEVICE) function(_OPENMP_TARGET_DEVICE_FLAG_CANDIDATES LANG DEVICE)
if(NOT OpenMPTarget_${LANG}_FLAGS) if(NOT OpenMPTarget_${LANG}_FLAGS)
unset(OpenMPTarget_FLAG_CANDIDATES) unset(OpenMPTarget_FLAG_CANDIDATES)
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openmp/tools/Modules/README.rst

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To use this module, simply add the path to CMake's current module path and call To use this module, simply add the path to CMake's current module path and call
``find_package``. The module will be installed with your OpenMP installation by ``find_package``. The module will be installed with your OpenMP installation by
default. Including OpenMP offloading support in an application should now only default. Including OpenMP offloading support in an application should now only
require a few additions. require a few additions.
.. code-block:: cmake .. code-block:: cmake
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
project(offloadTest VERSION 1.0 LANGUAGES CXX) project(offloadTest VERSION 1.0 LANGUAGES CXX)
list(APPEND CMAKE_MODULE_PATH "${PATH_TO_OPENMP_INSTALL}/lib/cmake/openmp") list(APPEND CMAKE_MODULE_PATH "${PATH_TO_OPENMP_INSTALL}/lib/cmake/openmp")
find_package(OpenMPTarget REQUIRED NVPTX) find_package(OpenMPTarget REQUIRED NVPTX)
add_executable(offload) add_executable(offload)
target_link_libraries(offload PRIVATE OpenMPTarget::OpenMPTarget_NVPTX) target_link_libraries(offload PRIVATE OpenMPTarget::OpenMPTarget_NVPTX)
target_sources(offload PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src/Main.cpp) target_sources(offload PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src/Main.cpp)
Using this module requires at least CMake version 3.13.4. Supported languages Using this module requires at least CMake version 3.20.0. Supported languages
are C and C++ with Fortran support planned in the future. If your application are C and C++ with Fortran support planned in the future. If your application
requires building for a specific device architecture you can set the requires building for a specific device architecture you can set the
``OpenMPTarget_<device>_ARCH=<flag>`` variable. Compiler support is best for ``OpenMPTarget_<device>_ARCH=<flag>`` variable. Compiler support is best for
Clang but this module should work for other compiler vendors such as IBM or GNU. Clang but this module should work for other compiler vendors such as IBM or GNU.

polly/CMakeLists.txt

# Check if this is a in tree build. # Check if this is a in tree build.
if (NOT DEFINED LLVM_MAIN_SRC_DIR) if (NOT DEFINED LLVM_MAIN_SRC_DIR)
project(Polly) project(Polly)
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
set(POLLY_STANDALONE_BUILD TRUE) set(POLLY_STANDALONE_BUILD TRUE)
endif() endif()
# Must go below project(..) # Must go below project(..)
include(GNUInstallDirs) include(GNUInstallDirs)
if(POLLY_STANDALONE_BUILD) if(POLLY_STANDALONE_BUILD)
# Where is LLVM installed? # Where is LLVM installed?
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pstl/CMakeLists.txt

#===-- CMakeLists.txt ----------------------------------------------------===## #===-- CMakeLists.txt ----------------------------------------------------===##
# #
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information. # See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
# #
#===----------------------------------------------------------------------===## #===----------------------------------------------------------------------===##
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
set(PARALLELSTL_VERSION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/include/pstl/internal/pstl_config.h") set(PARALLELSTL_VERSION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/include/pstl/internal/pstl_config.h")
file(STRINGS "${PARALLELSTL_VERSION_FILE}" PARALLELSTL_VERSION_SOURCE REGEX "#define _PSTL_VERSION .*$") file(STRINGS "${PARALLELSTL_VERSION_FILE}" PARALLELSTL_VERSION_SOURCE REGEX "#define _PSTL_VERSION .*$")
string(REGEX REPLACE "#define _PSTL_VERSION (.*)$" "\\1" PARALLELSTL_VERSION_SOURCE "${PARALLELSTL_VERSION_SOURCE}") string(REGEX REPLACE "#define _PSTL_VERSION (.*)$" "\\1" PARALLELSTL_VERSION_SOURCE "${PARALLELSTL_VERSION_SOURCE}")
math(EXPR VERSION_MAJOR "(${PARALLELSTL_VERSION_SOURCE} / 1000)") math(EXPR VERSION_MAJOR "(${PARALLELSTL_VERSION_SOURCE} / 1000)")
math(EXPR VERSION_MINOR "((${PARALLELSTL_VERSION_SOURCE} % 1000) / 10)") math(EXPR VERSION_MINOR "((${PARALLELSTL_VERSION_SOURCE} % 1000) / 10)")
math(EXPR VERSION_PATCH "(${PARALLELSTL_VERSION_SOURCE} % 10)") math(EXPR VERSION_PATCH "(${PARALLELSTL_VERSION_SOURCE} % 10)")
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runtimes/CMakeLists.txt

# This file handles building LLVM runtime sub-projects. # This file handles building LLVM runtime sub-projects.
cmake_minimum_required(VERSION 3.13.4) cmake_minimum_required(VERSION 3.20.0)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
project(Runtimes C CXX ASM) project(Runtimes C CXX ASM)
# Add path for custom and the LLVM build's modules to the CMake module path. # Add path for custom and the LLVM build's modules to the CMake module path.
set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake") set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
list(INSERT CMAKE_MODULE_PATH 0 list(INSERT CMAKE_MODULE_PATH 0
"${CMAKE_CURRENT_SOURCE_DIR}/cmake" "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules"
"${LLVM_COMMON_CMAKE_UTILS}" "${LLVM_COMMON_CMAKE_UTILS}"
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