[mips] Always use _LARGEFILE_SOURCE / _FILE_OFFSET_BITS for building MIPS 32-bit

atanasyan · atanasyan · commit 7684d05d95b9 · 2019-05-15T22:27:19.000Z
When MIPS 32-bit compiler-rt is building on 32-bit host or using 32-bit
`DLLVM_HOST_TRIPLE` the `_LARGEFILE_SOURCE` and the `_FILE_OFFSET_BITS=64`
macros defined by statements from the `HandleLLVMOptions.cmake`. In case
of building 32-bit libraries on 64-bit host using default host triple
these macros are not defined. As a result assertions check a consistency
between the `struct_kernel_stat_sz` constant and the `struct_kernel_stat_sz`
start to fail.

To resolve this problem and enable building both 32/64-bit versions
of MIPS compiler-rt libraries on 64-bit host at once always explicitly
define the `_LARGEFILE_SOURCE` and the `_FILE_OFFSET_BITS=64` macros
for MIPS 32-bit.

llvm-svn: 360825
diff --git a/compiler-rt/cmake/base-config-ix.cmake b/compiler-rt/cmake/base-config-ix.cmake
@@ -191,10 +191,10 @@ macro(test_targets)
       # clang's default CPU's. In the 64-bit case, we must also specify the ABI
       # since the default ABI differs between gcc and clang.
       # FIXME: Ideally, we would build the N32 library too.
-      test_target_arch(mipsel "" "-mips32r2" "-mabi=32")
+      test_target_arch(mipsel "" "-mips32r2" "-mabi=32" "-D_LARGEFILE_SOURCE" "-D_FILE_OFFSET_BITS=64")
       test_target_arch(mips64el "" "-mips64r2" "-mabi=64")
     elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "mips")
-      test_target_arch(mips "" "-mips32r2" "-mabi=32")
+      test_target_arch(mips "" "-mips32r2" "-mabi=32" "-D_LARGEFILE_SOURCE" "-D_FILE_OFFSET_BITS=64")
       test_target_arch(mips64 "" "-mips64r2" "-mabi=64")
     elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "arm")
       if(WIN32)
