3524d12878
Add SPLIT_DEBUG_INFO option, when it's set to yes the debug info is stored in separate .dwo files. This is mainly useful for remote debugging and reduces image size a lot. See also https://gcc.gnu.org/wiki/DebugFission Signed-off-by: Matthias Reichl <hias@horus.com>
101 lines
3.2 KiB
Plaintext
101 lines
3.2 KiB
Plaintext
# Linker hash-style is set to gnu via gcc default
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LD_OPTIM="-Wl,--as-needed"
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TARGET_CPPFLAGS=""
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TARGET_CFLAGS="$TARGET_CFLAGS -Wall -pipe $PROJECT_CFLAGS"
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TARGET_CXXFLAGS="$TARGET_CFLAGS"
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TARGET_LDFLAGS="$TARGET_LDFLAGS $LD_OPTIM"
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TARGET_LIBDIR="$SYSROOT_PREFIX/lib $SYSROOT_PREFIX/usr/lib"
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TARGET_INCDIR="$SYSROOT_PREFIX/include $SYSROOT_PREFIX/usr/include"
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HOST_CPPFLAGS=""
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HOST_CFLAGS="-march=native -O2 -Wall -pipe -I$TOOLCHAIN/include"
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HOST_CXXFLAGS="$HOST_CFLAGS"
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HOST_LDFLAGS="-Wl,-rpath,$TOOLCHAIN/lib -L$TOOLCHAIN/lib"
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HOST_INCDIR="$TOOLCHAIN/include /usr/include"
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# work around Ubuntu default C*FLAGS
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# see https://wiki.ubuntu.com/ToolChain/CompilerFlags#A-Wformat_-Wformat-security
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HOST_CFLAGS="$HOST_CFLAGS -Wno-format-security"
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HOST_CXXFLAGS="$HOST_CXXFLAGS -Wno-format-security"
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# lto flags
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FLAGS_OPTIM_LTO_NO_PARALLEL="-flto"
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FLAGS_OPTIM_LTO_PARALLEL="-flto=${CONCURRENCY_MAKE_LEVEL}"
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FLAGS_OPTIM_LTO_NO_FAT="-fno-fat-lto-objects"
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FLAGS_OPTIM_LTO_FAT="-ffat-lto-objects"
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FLAGS_OPTIM_LTO_OFF="-fno-lto"
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LDFLAGS_OPTIM_LTO_COMMON="-fuse-linker-plugin"
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# gold flags
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LDFLAGS_OPTIM_GOLD="-fuse-ld=gold"
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# default compiler optimization
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CFLAGS_OPTIM_DEFAULT="-O2 -fomit-frame-pointer"
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CXXFLAGS_OPTIM_DEFAULT="$CFLAGS_OPTIM_DEFAULT"
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# speed flag
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CFLAGS_OPTIM_SPEED="-O3 -fomit-frame-pointer"
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CXXFLAGS_OPTIM_SPEED="$CFLAGS_OPTIM_SPEED"
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# size flag
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CFLAGS_OPTIM_SIZE="-Os -fomit-frame-pointer"
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CXXFLAGS_OPTIM_SIZE="$CFLAGS_OPTIM_SIZE"
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# debug settings
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CFLAGS_OPTIM_DEBUG="-ggdb -Os"
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CXXFLAGS_OPTIM_DEBUG="$CFLAGS_OPTIM_DEBUG"
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LDFLAGS_OPTIM_DEBUG="-ggdb"
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# split debug settings (requires gold)
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CFLAGS_OPTIM_DEBUG_SPLIT="-gsplit-dwarf -Os"
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CXXFLAGS_OPTIM_DEBUG_SPLIT="$CFLAGS_OPTIM_DEBUG_SPLIT"
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LDFLAGS_OPTIM_DEBUG_SPLIT="-Wl,--gdb-index"
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# position-independent code
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CFLAGS_OPTIM_PIC="-fPIC -DPIC"
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CXXFLAGS_OPTIM_PIC="-fPIC -DPIC"
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LDFLAGS_OPTIM_PIC="-fPIC"
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# hardening support
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# TODO: basiclly copied from debian 9, should adjust for LE
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CFLAGS_OPTIM_HARDENING="-fstack-protector-strong -Wformat -Werror=format-security -fPIE"
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CXXFLAGS_OPTIM_HARDENING="-fstack-protector-strong -Wformat -Werror=format-security -fPIE"
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CPPFLAGS_OPTIM_HARDENING="-D_FORTIFY_SOURCE=2"
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LDFLAGS_OPTIM_HARDENING="-Wl,-z,relro -Wl,-z,now"
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# add distro specific library dirs
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if [ -z "$HOST_LIBDIR" ]; then
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HOST_LIBDIR="$TOOLCHAIN/lib"
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# ubuntu/debian specific "multiarch support"
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export MACHINE_HARDWARE_NAME="$(uname -m)"
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export MACHINE_HARDWARE_PLATFORM="$(uname -i)"
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FAMILY_TRIPLET=${HOST_NAME/${MACHINE_HARDWARE_NAME}/${MACHINE_HARDWARE_PLATFORM}}
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if [ -d /lib/$FAMILY_TRIPLET ]; then
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HOST_LIBDIR="$HOST_LIBDIR /lib/$FAMILY_TRIPLET"
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fi
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if [ -d /usr/lib/$FAMILY_TRIPLET ]; then
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HOST_LIBDIR="$HOST_LIBDIR /usr/lib/$FAMILY_TRIPLET"
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fi
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# default multiarch support
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case "${MACHINE_HARDWARE_NAME}" in
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i*86)
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if [ -d /lib32 ]; then
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HOST_LIBDIR="$HOST_LIBDIR /lib32"
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fi
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if [ -d /usr/lib32 ]; then
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HOST_LIBDIR="$HOST_LIBDIR /usr/lib32"
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fi
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;;
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x86_64)
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if [ -d /lib64 ]; then
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HOST_LIBDIR="$HOST_LIBDIR /lib64"
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fi
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if [ -d /usr/lib64 ]; then
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HOST_LIBDIR="$HOST_LIBDIR /usr/lib64"
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fi
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;;
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esac
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# default dirs
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export HOST_LIBDIR="$HOST_LIBDIR /lib /usr/lib"
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fi
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