Gabe Black has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/40715 )
Change subject: scons: Add support for debug info compression.
......................................................................
scons: Add support for debug info compression.
If supported this will compress the debug information in object files,
libraries, and binaries. This decreases the size of the build/ARM
directory from 11GB to 7.2GB.
Change-Id: I71919062d23742b7658918b0fa9c4d91d0521fbf
---
M SConstruct
1 file changed, 32 insertions(+), 2 deletions(-)
diff --git a/SConstruct b/SConstruct
index f744c77..87baed8 100755
--- a/SConstruct
+++ b/SConstruct
@@ -383,8 +383,8 @@
# https://gcc.gnu.org/ml/gcc-patches/2015-11/msg03161.html
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69866
if not GetOption('force_lto'):
- main.Append(PSHLINKFLAGS='-flinker-output=rel')
- main.Append(PLINKFLAGS='-flinker-output=rel')
+ main.Append(PSHLINKFLAGS=['-flinker-output=rel'])
+ main.Append(PLINKFLAGS=['-flinker-output=rel'])
disable_lto = GetOption('no_lto')
if not disable_lto and main.get('BROKEN_INCREMENTAL_LTO', False) and \
@@ -553,6 +553,24 @@
main['TIMEOUT'] = timeout_version and \
compareVersions(timeout_version[-1], '8.13') >= 0
+def CheckCxxFlag(context, flag):
+ context.Message("Checking for compiler %s support..." % flag)
+ last_cxxflags = context.env['CXXFLAGS']
+ context.env.Append(CXXFLAGS=[flag])
+ ret = context.TryCompile('', '.cc')
+ context.env['CXXFLAGS'] = last_cxxflags
+ context.Result(ret)
+ return ret
+
+def CheckLinkFlag(context, flag):
+ context.Message("Checking for linker %s support..." % flag)
+ last_linkflags = context.env['LINKFLAGS']
+ context.env.Append(LINKFLAGS=[flag])
+ ret = context.TryLink('int main(int, char *[]) { return 0; }', '.cc')
+ context.env['LINKFLAGS'] = last_linkflags
+ context.Result(ret)
+ return ret
+
# Add a custom Check function to test for structure members.
def CheckMember(context, include, decl, member, include_quotes="<>"):
context.Message("Checking for member %s in %s..." %
@@ -602,6 +620,8 @@
custom_tests = {
'CheckMember' : CheckMember,
'CheckPythonLib' : CheckPythonLib,
+ 'CheckCxxFlag' : CheckCxxFlag,
+ 'CheckLinkFlag' : CheckLinkFlag,
})
# Check if we should compile a 64 bit binary on Mac OS X/Darwin
@@ -641,6 +661,16 @@
print('Using build cache located at', main['M5_BUILD_CACHE'])
CacheDir(main['M5_BUILD_CACHE'])
+AsCompressDebugFlag = '-Wa,--compress-debug-sections=zlib-gabi'
+LdCompressDebugFlag = '-Wl,--compress-debug-sections=zlib-gabi'
+if conf.CheckCxxFlag(AsCompressDebugFlag):
+ main.Append(CXXFLAGS=[AsCompressDebugFlag])
+if conf.CheckLinkFlag(LdCompressDebugFlag):
+ main.Append(LINKFLAGS=[LdCompressDebugFlag],
+ SHLINKFLAGS=[LdCompressDebugFlag],
+ PLINKFLAGS=[LdCompressDebugFlag],
+ PSHLINKFLAGS=[LdCompressDebugFlag])
+
main['USE_PYTHON'] = not GetOption('without_python')
if main['USE_PYTHON']:
# Find Python include and library directories for embedding the
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I71919062d23742b7658918b0fa9c4d91d0521fbf
Gerrit-Change-Number: 40715
Gerrit-PatchSet: 1
Gerrit-Owner: Gabe Black <[email protected]>
Gerrit-MessageType: newchange
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