From 6315745770384490509cf471c6286a1ea32cb79e Mon Sep 17 00:00:00 2001 From: Thiago Macieira Date: Tue, 6 May 2014 11:27:06 -0700 Subject: 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 --- mkspecs/features/qt_app.prf | 3 +++ 1 file changed, 3 insertions(+) (limited to 'mkspecs/features/qt_app.prf') 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 -- cgit v1.2.3