changeset b958d9fa867c in /z/repo/gem5
details: http://repo.gem5.org/gem5?cmd=changeset;node=b958d9fa867c
description:
scons: Fix libelf linking errors when using clang/llvm
This patch fixes a linking error that occurs when using clang/llvm in
combination with older versions of glibc. The fix involves adding
-std=gnu89 to the command line when compiling libelf as clang defaults
to c99, causing issues with the symbols in sysmacros.h being defined
multiple times.
diffstat:
ext/libelf/SConscript | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diffs (15 lines):
diff -r 175421e57fff -r b958d9fa867c ext/libelf/SConscript
--- a/ext/libelf/SConscript Mon Jan 07 13:05:35 2013 -0500
+++ b/ext/libelf/SConscript Mon Jan 07 13:05:35 2013 -0500
@@ -100,6 +100,11 @@
'-Wno-implicit-function-declaration'])
if m4env['CLANG']:
m4env.Append(CCFLAGS=['-Wno-initializer-overrides', '-Wno-pointer-sign'])
+ # clang defaults to c99 (while gcc defaults to gnu89) and there is a
+ # difference in the handling of inlining functions which causes
+ # linking problems with multiple definitions of the symbols in
+ # sysmacros.h for older versions of glibc
+ m4env.Append(CCFLAGS=['-std=gnu89'])
m4env.Append(CCFLAGS=['-Wno-implicit'])
del m4env['CPPPATH']
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