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 /mkspecs | |
| 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 'mkspecs')
| -rw-r--r-- | mkspecs/common/linux.conf | 1 | ||||
| -rw-r--r-- | mkspecs/common/mac.conf | 1 | ||||
| -rw-r--r-- | mkspecs/features/qt_app.prf | 3 | ||||
| -rw-r--r-- | mkspecs/win32-g++/qmake.conf | 1 |
4 files changed, 6 insertions, 0 deletions
diff --git a/mkspecs/common/linux.conf b/mkspecs/common/linux.conf index 98e6cefabd..e10ab71cd6 100644 --- a/mkspecs/common/linux.conf +++ b/mkspecs/common/linux.conf @@ -6,6 +6,7 @@ QMAKE_PLATFORM += linux QMAKE_CFLAGS_THREAD += -D_REENTRANT QMAKE_CXXFLAGS_THREAD += $$QMAKE_CFLAGS_THREAD +QMAKE_LFLAGS_GCSECTIONS = -Wl,--gc-sections QMAKE_INCDIR = QMAKE_LIBDIR = diff --git a/mkspecs/common/mac.conf b/mkspecs/common/mac.conf index 4421665370..5f60549c70 100644 --- a/mkspecs/common/mac.conf +++ b/mkspecs/common/mac.conf @@ -18,6 +18,7 @@ QMAKE_INCDIR_OPENGL = \ QMAKE_FIX_RPATH = install_name_tool -id QMAKE_LFLAGS_RPATH = +QMAKE_LFLAGS_GCSECTIONS = -Wl,-dead_strip QMAKE_LIBS_DYNLOAD = QMAKE_LIBS_OPENGL = -framework OpenGL -framework AGL diff --git a/mkspecs/features/qt_app.prf b/mkspecs/features/qt_app.prf index a4fcb7d484..0f83fd7270 100644 --- a/mkspecs/features/qt_app.prf +++ b/mkspecs/features/qt_app.prf @@ -16,6 +16,9 @@ DESTDIR = $$MODULE_BASE_OUTDIR/bin isEmpty(QMAKE_INFO_PLIST): CONFIG -= app_bundle +# This decreases the binary size for tools if statically linked +QMAKE_LFLAGS += $$QMAKE_LFLAGS_GCSECTIONS + host_build: QT -= gui # no host tool will ever use gui host_build:force_bootstrap { !build_pass: CONFIG += release diff --git a/mkspecs/win32-g++/qmake.conf b/mkspecs/win32-g++/qmake.conf index 759ade93c1..d26ffb4e21 100644 --- a/mkspecs/win32-g++/qmake.conf +++ b/mkspecs/win32-g++/qmake.conf @@ -77,6 +77,7 @@ QMAKE_LFLAGS_CONSOLE = -Wl,-subsystem,console QMAKE_LFLAGS_WINDOWS = -Wl,-subsystem,windows QMAKE_LFLAGS_DLL = -shared QMAKE_LFLAGS_CXX11 = +QMAKE_LFLAGS_GCSECTIONS = -Wl,--gc-sections QMAKE_LINK_OBJECT_MAX = 10 QMAKE_LINK_OBJECT_SCRIPT = object_script QMAKE_PREFIX_STATICLIB = lib |