diff options
| author | Thiago Macieira <thiago.macieira@intel.com> | 2014-05-06 11:27:06 -0700 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-05-19 19:33:15 +0200 |
| commit | 6315745770384490509cf471c6286a1ea32cb79e (patch) | |
| tree | 40f1465f7747054901c7d3fe7ef492eb04dba41b /tools/configure | |
| parent | e91e502ab6424be12c3448431a65e7d617ab5571 (diff) | |
Strip bootstrapped binaries of unused sections
This matches the -ffunction-sections from bootstrap.pro, which tells the
compiler to create a section for each function. The -gc-sections option
tells the linker to drop what wasn't used (normally, it only drops
entire files).
Before (on Linux, built with -O3, no LTO):
text data bss dec hex filename
1746385 7920 3750 1758055 1ad367 bin/moc
1444101 6664 1894 1452659 162a73 bin/rcc
4407725 1568 4896 4414189 435aed bin/qmake
After:
text data bss dec hex filename
1131655 6520 3494 1141669 116ba5 bin/moc
1027043 5480 1766 1034289 fc831 bin/rcc
3578489 1656 5313 3585458 36b5b2 bin/qmake
Gain: 35% on moc, 28% on rcc, 19% on qmake
Before (on OS X):
__TEXT __DATA __OBJC others dec hex
1495040 12288 0 4294993008 4296500336 100176470 bin/moc
1265664 8192 0 4294983904 4296257760 10013b0e0 bin/rcc
5279744 81920 0 4297912320 4303273984 1007ec000 bin/qmake
After:
__TEXT __DATA __OBJC others dec hex
806912 8192 0 4294988132 4295803236 1000cc164 bin/moc
720896 8192 0 4294979764 4295708852 1000b50b4 bin/rcc
4841472 77824 0 4295580688 4300499984 100546c10 bin/qmake
Gain: 46% on moc, 43% on rcc, 8% on qmake.
Change-Id: Icc7cdc9fd6f5db15537b4adabaac7e7a27e539d4
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Diffstat (limited to 'tools/configure')
| -rw-r--r-- | tools/configure/configureapp.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/configure/configureapp.cpp b/tools/configure/configureapp.cpp index 0e3bbcd3fb..b7565093f1 100644 --- a/tools/configure/configureapp.cpp +++ b/tools/configure/configureapp.cpp @@ -4041,6 +4041,7 @@ void Configure::buildQmake() stream << "QMAKESPEC = $(SOURCE_PATH)\\mkspecs\\win32-g++" << endl << "EXTRA_CFLAGS = -DUNICODE -ffunction-sections" << endl << "EXTRA_CXXFLAGS = -DUNICODE -ffunction-sections" << endl + << "EXTRA_LFLAGS = -Wl,--gc-sections" << endl << "QTOBJS = qfilesystemengine_win.o \\" << endl << " qfilesystemiterator_win.o \\" << endl << " qfsfileengine_win.o \\" << endl |