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D58092.diff
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Thu, May 23, 9:06 PM

D58092.diff

Index: llvm/trunk/runtimes/CMakeLists.txt
===================================================================
--- llvm/trunk/runtimes/CMakeLists.txt
+++ llvm/trunk/runtimes/CMakeLists.txt
@@ -93,23 +93,15 @@
set(LLVM_ENABLE_LIBCXX ON CACHE BOOL "")
endif()
- set(SAFE_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
- set(SAFE_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
-
include(CheckLibraryExists)
include(CheckCCompilerFlag)
- check_library_exists(c fopen "" LLVM_HAS_C_LIB)
- check_c_compiler_flag(-nodefaultlibs LLVM_HAS_NODEFAULTLIBS_FLAG)
- if(LLVM_HAS_NODEFAULTLIBS_FLAG)
- set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nodefaultlibs")
- if(LLVM_HAS_C_LIB)
- list(APPEND CMAKE_REQUIRED_LIBRARIES c)
- endif()
- endif()
+ # We don't have libc++ (yet).
+ set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nostdlib++")
# Avoid checking whether the compiler is working.
set(LLVM_COMPILER_CHECKED ON)
+ # Mark the compiler as compatible with GCC.
# Enable warnings, otherwise -w gets added to the cflags by HandleLLVMOptions
# resulting in unjustified successes by check_cxx_compiler_flag.
set(LLVM_ENABLE_WARNINGS ON)
@@ -119,8 +111,8 @@
include(HandleLLVMOptions)
include(FindPythonInterp)
- set(CMAKE_REQUIRED_FLAGS ${SAFE_CMAKE_REQUIRED_FLAGS})
- set(CMAKE_REQUIRED_LIBRARIES ${SAFE_CMAKE_REQUIRED_LIBRARIES})
+ # Remove the -nostdlib++ option we've added earlier.
+ string(REPLACE "-nostdlib++" "" CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
# This can be used to detect whether we're in the runtimes build.
set(RUNTIMES_BUILD ON)

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