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authorCiro Santilli <ciro.santilli@arm.com>2018-11-07 00:00:00 +0000
committerCiro Santilli <ciro.santilli@arm.com>2018-11-15 13:19:06 +0000
commitfafe4e80b76e93e3d0d05797904c19928587f5b5 (patch)
tree426cd566c9ad7eca8ee7f11d4bc858c3ee73e8f8 /SConstruct
parenta4a5fa7fa591e91be86223f1fc8936d88255ac13 (diff)
downloadgem5-fafe4e80b76e93e3d0d05797904c19928587f5b5.tar.xz
scons: add --gold-linker to link with the gold linker
This option can significantly speedup link time on Linux systems, which is the main bottleneck to rebuild after small changes. Change-Id: I3b0bdd61f7dcef0d73629c8ee2ee98091953fec3 Reviewed-on: https://gem5-review.googlesource.com/c/14075 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Gabe Black <gabeblack@google.com>
Diffstat (limited to 'SConstruct')
-rwxr-xr-xSConstruct4
1 files changed, 4 insertions, 0 deletions
diff --git a/SConstruct b/SConstruct
index d81c5abd9..0a8cd0edc 100755
--- a/SConstruct
+++ b/SConstruct
@@ -145,6 +145,8 @@ AddLocalOption('--default', dest='default', type='string', action='store',
help='Override which build_opts file to use for defaults')
AddLocalOption('--ignore-style', dest='ignore_style', action='store_true',
help='Disable style checking hooks')
+AddLocalOption('--gold-linker', dest='gold_linker', action='store_true',
+ help='Use the gold linker')
AddLocalOption('--no-lto', dest='no_lto', action='store_true',
help='Disable Link-Time Optimization for fast')
AddLocalOption('--force-lto', dest='force_lto', action='store_true',
@@ -357,6 +359,8 @@ if main['GCC'] or main['CLANG']:
main['FILTER_PSHLINKFLAGS'] = lambda x: str(x).replace(' -shared', '')
main['PSHLINKFLAGS'] = main.subst('${FILTER_PSHLINKFLAGS(SHLINKFLAGS)}')
+ if GetOption('gold_linker'):
+ main.Append(LINKFLAGS='-fuse-ld=gold')
main['PLINKFLAGS'] = main.subst('${LINKFLAGS}')
shared_partial_flags = ['-r', '-nostdlib']
main.Append(PSHLINKFLAGS=shared_partial_flags)