qt5base-lts/mkspecs/common/android-base-tail.conf
Sérgio Martins b7a898b8fe android-clang: Use -Oz instead of -Os to produce smaller binaries
For clang -Os is very similar to -O2 and doesn't really reduce size much.
-Oz is usually what you want to use with clang for code reduction.

Now clang binaries are only 9% bigger than gcc's, instead of 22%.

Change-Id: Ib0ba560be26db68aeb21c13df4b151b7fbd81431
Reviewed-by: BogDan Vatra <bogdan@kdab.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
2017-07-31 17:02:29 +00:00

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# In early configure setup; nothing useful to be done here.
isEmpty(DEFAULT_ANDROID_NDK_ROOT): return()
# -fstack-protector-strong offers good protection against stack smashing attacks.
# It is (currently) enabled only on Android because we know for sure that Andoroid compilers supports it
QMAKE_CFLAGS += -fstack-protector-strong -DANDROID
equals(ANDROID_TARGET_ARCH, armeabi-v7a): \
QMAKE_CFLAGS += -march=armv7-a -mfloat-abi=softfp -mfpu=vfp -fno-builtin-memmove
else: equals(ANDROID_TARGET_ARCH, armeabi): \
QMAKE_CFLAGS += -march=armv5te -mtune=xscale -msoft-float -fno-builtin-memmove
# -fno-builtin-memmove is used to workaround https://code.google.com/p/android/issues/detail?id=81692
QMAKE_CFLAGS += --sysroot=$$ANDROID_PLATFORM_ROOT_PATH
QMAKE_CFLAGS_WARN_ON = -Wall -W
QMAKE_CFLAGS_WARN_OFF =
equals(ANDROID_TARGET_ARCH, armeabi-v7a) | equals(ANDROID_TARGET_ARCH, armeabi) {
contains(QMAKE_COMPILER, clang) {
QMAKE_CFLAGS_RELEASE = -Oz
QMAKE_CFLAGS_RELEASE_WITH_DEBUGINFO = -g -Oz
} else {
QMAKE_CFLAGS_RELEASE = -Os
QMAKE_CFLAGS_RELEASE_WITH_DEBUGINFO = -g -Os
}
QMAKE_CFLAGS_DEBUG = -g -marm -O0
equals(ANDROID_TARGET_ARCH, armeabi):if(equals(NDK_TOOLCHAIN_VERSION, 4.8)|equals(NDK_TOOLCHAIN_VERSION, 4.9)) {
DEFINES += QT_OS_ANDROID_GCC_48_WORKAROUND
} else {
QMAKE_CFLAGS_RELEASE += -mthumb
QMAKE_CFLAGS_RELEASE_WITH_DEBUGINFO += -mthumb
}
# Don't override our options with -O3
QMAKE_CFLAGS_OPTIMIZE_FULL =
} else {
QMAKE_CFLAGS_RELEASE = -O2
QMAKE_CFLAGS_RELEASE_WITH_DEBUGINFO = -g -O2
QMAKE_CFLAGS_DEBUG = -g
}
QMAKE_CFLAGS_SHLIB = -fPIC
QMAKE_CFLAGS_YACC = -Wno-unused -Wno-parentheses
QMAKE_CFLAGS_THREAD = -D_REENTRANT
QMAKE_CFLAGS_HIDESYMS = -fvisibility=hidden
QMAKE_CFLAGS_NEON = -mfpu=neon
QMAKE_CXXFLAGS_CXX11 = -std=c++11
QMAKE_CXXFLAGS_CXX14 = -std=c++14
QMAKE_CXXFLAGS_CXX1Z = -std=c++1z
QMAKE_CXXFLAGS_GNUCXX11 = -std=gnu++11
QMAKE_CXXFLAGS_GNUCXX14 = -std=gnu++14
QMAKE_CXXFLAGS_GNUCXX1Z = -std=gnu++1z
QMAKE_CXXFLAGS = $$QMAKE_CFLAGS
QMAKE_CXXFLAGS_WARN_ON = $$QMAKE_CFLAGS_WARN_ON
QMAKE_CXXFLAGS_WARN_OFF = $$QMAKE_CFLAGS_WARN_OFF
QMAKE_CXXFLAGS_RELEASE += $$QMAKE_CFLAGS_RELEASE
QMAKE_CXXFLAGS_RELEASE_WITH_DEBUGINFO += $$QMAKE_CFLAGS_RELEASE_WITH_DEBUGINFO
QMAKE_CXXFLAGS_DEBUG += $$QMAKE_CFLAGS_DEBUG
QMAKE_CXXFLAGS_SHLIB = $$QMAKE_CFLAGS_SHLIB
QMAKE_CXXFLAGS_YACC = $$QMAKE_CFLAGS_YACC
QMAKE_CXXFLAGS_THREAD = $$QMAKE_CFLAGS_THREAD
QMAKE_CXXFLAGS_HIDESYMS = $$QMAKE_CFLAGS_HIDESYMS -fvisibility-inlines-hidden
# modifications to linux.conf
QMAKE_AR = $$NDK_TOOLCHAIN_PATH/bin/$$NDK_TOOLS_PREFIX-ar cqs
QMAKE_OBJCOPY = $$NDK_TOOLCHAIN_PATH/bin/$$NDK_TOOLS_PREFIX-objcopy
QMAKE_NM = $$NDK_TOOLCHAIN_PATH/bin/$$NDK_TOOLS_PREFIX-nm -P
QMAKE_STRIP =
#$$NDK_TOOLCHAIN_PATH/bin/$$NDK_TOOLS_PREFIX-strip
QMAKE_RANLIB = $$NDK_TOOLCHAIN_PATH/bin/$$NDK_TOOLS_PREFIX-ranlib
equals(ANDROID_TARGET_ARCH, armeabi)|equals(ANDROID_TARGET_ARCH, armeabi-v7a): \
LIBGCC_PATH_FULL = $$system("$$QMAKE_GCC -mthumb-interwork -print-libgcc-file-name")
else: \
LIBGCC_PATH_FULL = $$system("$$QMAKE_GCC -print-libgcc-file-name")
LIBGCC_PATH = $$dirname(LIBGCC_PATH_FULL)
QMAKE_INCDIR_POST = $$ANDROID_SOURCES_CXX_STL_INCDIR $$QMAKE_ANDROID_PLATFORM_INCDIR
QMAKE_LIBDIR_POST = $$ANDROID_SOURCES_CXX_STL_LIBDIR $$QMAKE_ANDROID_PLATFORM_LIBDIR $$LIBGCC_PATH
QMAKE_INCDIR_X11 =
QMAKE_LIBDIR_X11 =
QMAKE_INCDIR_OPENGL = $$QMAKE_ANDROID_PLATFORM_INCDIR
QMAKE_LIBDIR_OPENGL = $$QMAKE_ANDROID_PLATFORM_LIBDIR
QMAKE_LINK_SHLIB = $$QMAKE_LINK
QMAKE_LFLAGS = --sysroot=$$ANDROID_PLATFORM_ROOT_PATH
QMAKE_RPATHLINK = $$QMAKE_ANDROID_PLATFORM_LIBDIR
QMAKE_LFLAGS_APP = -Wl,--no-undefined -Wl,-z,noexecstack -shared
QMAKE_LFLAGS_SHLIB = -Wl,--no-undefined -Wl,-z,noexecstack -shared
QMAKE_LFLAGS_PLUGIN = $$QMAKE_LFLAGS_SHLIB
QMAKE_LFLAGS_NOUNDEF = -Wl,--no-undefined
QMAKE_LFLAGS_RPATH = -Wl,-rpath=
QMAKE_LFLAGS_RPATHLINK = -Wl,-rpath-link=
QMAKE_LIBS_PRIVATE = -lgnustl_shared -llog -lz -lm -ldl -lc -lgcc
QMAKE_LIBS_X11 =
QMAKE_LIBS_THREAD =
QMAKE_LIBS_EGL = -lEGL
QMAKE_LIBS_OPENGL =
QMAKE_LIBS_OPENGL_ES2 = -lGLESv2
!exists($$NDK_ROOT): error("You need to set the ANDROID_NDK_ROOT environment variable to point to your Android NDK.")
load(qt_config)
QMAKE_DEFAULT_LIBDIRS = $$QMAKE_LIBDIR
QMAKE_DEFAULT_INCDIRS = $$QMAKE_INCDIR