diff options
| author | Thiago Macieira <thiago.macieira@intel.com> | 2014-06-26 14:56:06 -0700 |
|---|---|---|
| committer | hjk <hjk121@nokiamail.com> | 2014-07-23 11:12:02 +0200 |
| commit | 1bd27f24fb7f7d82f4b67cffe43e0af644709106 (patch) | |
| tree | 4f35d7ed8bb0a9e5f7a4381e0b09f69414d8f9d5 /mkspecs/linux-icc/qmake.conf | |
| parent | 849d1fece1da7136911464bc47439b4126145440 (diff) | |
Add link-time optimization support for Clang, GCC and ICC
GCC currently requires fat object files for static libraries, since the
linker would otherwise not load the .o file from the archive at all and
the linking would fail with a lot of undefined references. Clang on
Linux also needs this, but it has no equivalent flag, so enabling LTCG
for Clang on static libraries will result in linker error.
This commit does not add support for enabling it in configure. It can be
enabled on a per-project basis by doing CONFIG += ltcg or by passing
-config ltcg to qmake's command-line.
Change-Id: I52cf99f1ed9f1701e23a3b457ba3502fd28126ce
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Diffstat (limited to 'mkspecs/linux-icc/qmake.conf')
| -rw-r--r-- | mkspecs/linux-icc/qmake.conf | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mkspecs/linux-icc/qmake.conf b/mkspecs/linux-icc/qmake.conf index c0caca09fa..8119c8aa09 100644 --- a/mkspecs/linux-icc/qmake.conf +++ b/mkspecs/linux-icc/qmake.conf @@ -24,6 +24,7 @@ QMAKE_CFLAGS_YACC = QMAKE_CFLAGS_ISYSTEM = -isystem QMAKE_CFLAGS_THREAD = -D_REENTRANT QMAKE_CFLAGS_SPLIT_SECTIONS = -ffunction-sections +QMAKE_CFLAGS_LTCG = -ipo QMAKE_CFLAGS_SSE2 += -xSSE2 QMAKE_CFLAGS_SSE3 += -xSSE3 @@ -49,6 +50,7 @@ QMAKE_CXXFLAGS_SPLIT_SECTIONS = $$QMAKE_CFLAGS_SPLIT_SECTIONS # Disabling exceptions disabled - workaround for QTBUG-36577 #QMAKE_CXXFLAGS_EXCEPTIONS_OFF = -fno-exceptions QMAKE_CXXFLAGS_CXX11 = -std=c++0x +QMAKE_CXXFLAGS_LTCG = $$QMAKE_CFLAGS_LTCG QMAKE_INCDIR = QMAKE_LIBDIR = @@ -70,6 +72,7 @@ QMAKE_LFLAGS_NOUNDEF = -Wl,-z,defs QMAKE_LFLAGS_RPATH = -Wl,-rpath, QMAKE_LFLAGS_RPATHLINK = -Wl,-rpath-link, QMAKE_LFLAGS_CXX11 = +QMAKE_LFLAGS_LTCG = $$QMAKE_CFLAGS_LTCG QMAKE_LIBS = QMAKE_LIBS_DYNLOAD = -ldl |