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115 lines
3.7 KiB
Bash
115 lines
3.7 KiB
Bash
# This file adds functions to build the musl C library
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# Copyright 2013 Timo Teräs
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# Licensed under the GPL v2. See COPYING in the root of this package
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musl_post_cc()
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{
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# MUSL creates dynamic linker symlink with absolute path - which works on the
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# target but not on the host. We want our cross-ldd tool to work.
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CT_MultilibFixupLDSO
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}
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musl_main()
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{
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CT_DoStep INFO "Installing C library"
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CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc"
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CT_IterateMultilibs musl_backend_once multilib
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CT_Popd
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CT_EndStep
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}
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# This backend builds the C library
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# Usage: musl_backend param=value [...]
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# Parameter : Definition : Type : Default
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# multi_* : as defined in CT_IterateMultilibs : (varies) :
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musl_backend_once()
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{
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local -a extra_cflags
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local -a extra_config
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local src_dir="${CT_SRC_DIR}/musl"
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local multi_dir multi_os_dir multi_root multi_flags multi_index multi_count
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local multilib_dir
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local musl_cflags
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local hdr_install_subdir
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local arg f l
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for arg in "$@"; do
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eval "${arg// /\\ }"
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done
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CT_DoStep INFO "Building for multilib ${multi_index}/${multi_count}: '${multi_flags}'"
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multilib_dir="/usr/lib/${multi_os_dir}"
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CT_SanitizeVarDir multilib_dir
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CT_DoExecLog ALL mkdir -p "${multi_root}${multilib_dir}"
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musl_cflags+=" ${CT_ALL_TARGET_CFLAGS}"
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musl_cflags+=" ${CT_LIBC_MUSL_EXTRA_CFLAGS}"
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musl_cflags+=" ${multi_flags}"
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if [ "${CT_LIBC_MUSL_DEBUG}" = "y" ]; then
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extra_config+=("--enable-debug")
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fi
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if [ "${CT_LIBC_MUSL_WARNINGS}" = "y" ]; then
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extra_config+=("--enable-warnings")
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fi
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case "${CT_SHARED_LIBS}" in
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y) extra_config+=("--enable-shared");;
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*) extra_config+=("--disable-shared");;
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esac
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extra_config+=( "--enable-optimize=${CT_LIBC_MUSL_OPTIMIZE}" )
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# Same problem as with uClibc: different variants sometimes have
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# incompatible headers.
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CT_DoArchMUSLHeaderDir hdr_install_subdir "${multi_flags}"
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if [ -n "${hdr_install_subdir}" ]; then
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extra_config+=( "--includedir=/usr/include/${hdr_install_subdir}" )
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fi
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CT_SymlinkToolsMultilib
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# NOTE: musl handles the build/host/target a little bit differently
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# then one would expect:
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# build : not used
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# host : same as --target
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# target : the machine musl runs on
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CT_DoExecLog CFG \
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CFLAGS="${musl_cflags}" \
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LDFLAGS="${CT_TARGET_LDFLAGS}" \
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CROSS_COMPILE="${CT_TARGET}-" \
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${CONFIG_SHELL} \
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${src_dir}/configure \
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--host="${multi_target}" \
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--target="${multi_target}" \
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--prefix="/usr" \
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--libdir="${multilib_dir}" \
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--disable-gcc-wrapper \
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"${extra_config[@]}"
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CT_DoLog EXTRA "Building C library"
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CT_DoExecLog ALL make ${CT_JOBSFLAGS}
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CT_DoLog EXTRA "Installing C library"
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CT_DoExecLog ALL make DESTDIR="${multi_root}" install
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# Convert /lib/ld-* symlinks to relative paths so that they are valid
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# both on the host and on the target.
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for f in ${multi_root}/ld-musl-*; do
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[ -L "${f}" ] || continue
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l=$( readlink ${f} )
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case "${l}" in
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${multilib_dir}/*)
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CT_DoExecLog ALL ln -sf "../${l}" "${f}"
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;;
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esac
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done
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# Any additional actions for this architecture
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CT_DoArchMUSLPostInstall
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CT_EndStep
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}
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