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Toolchain
To build a gcc/binutils toolchain with musl-cross-make from an oasis
system, you'll need make as well as the core system.
First, checkout the musl-cross-make sources.
git clone https://github.com/richfelker/musl-cross-make /src/musl-cross-make
cd /src/musl-cross-make
Currently, you'll need to apply some patches to build kernel headers with sbase.
git pull --no-edit https://github.com/oasislinux/musl-cross-make
A basic config.mak to build a static native toolchain might look like this.
NATIVE = 1
TARGET = x86_64-linux-musl
DL_CMD = curl -Lo
COMMON_CONFIG += CC='cc -static --static'
COMMON_CONFIG += CXX='c++ -static --static'
COMMON_CONFIG += CFLAGS='-O2 -pipe'
COMMON_CONFIG += CXXFLAGS='-O2 -pipe'
COMMON_CONFIG += LDFLAGS='-s'
COMMON_CONFIG += --build=$(TARGET)
COMMON_CONFIG += --with-build-sysroot=/
COMMON_CONFIG += --disable-nls
COMMON_CONFIG += --enable-deterministic-archives
COMMON_CONFIG += --with-debug-prefix-map=$(CURDIR)=
GCC_CONFIG += --with-native-system-header-dir=/include
GCC_CONFIG += --disable-bootstrap
GCC_CONFIG += --disable-libgomp
GCC_CONFIG += --disable-libquadmath
GCC_CONFIG += --disable-lto
KERNEL_VARS += HOSTCC='cc -static'
# only static
COMMON_CONFIG += --disable-shared
MUSL_CONFIG += --disable-shared
You should configure this to your needs as save as config.mak in the
musl-cross-make repository.
make
See Repository for details about merging external software into your
root repository. By default, musl-cross-make installs to output, so
just choose that as your worktree name. If you previously merged the
prebuilt oasis-toolchain repository, make sure you use the previously
created toolchain branch so that the old toolchain files get deleted.
make install
Delete stuff we don't want in our filesystem.
find output '(' -name '*.py' -o -name '*.la' ')' -exec rm {} +