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https://github.com/crosstool-ng/crosstool-ng.git
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6bef0b4d24
This commit adds a configuration knob for enabling extra developer warnings to be enabled during the musl-libc build. Signed-off-by: Bryan Hundven <bryanhundven@gmail.com> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
116 lines
3.5 KiB
Bash
116 lines
3.5 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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do_libc_get() {
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local libc_src
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libc_src="http://www.musl-libc.org/releases"
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if [ "${CT_LIBC_MUSL_CUSTOM}" = "y" ]; then
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CT_GetCustom "musl" "${CT_LIBC_VERSION}" \
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"${CT_LIBC_MUSL_CUSTOM_LOCATION}"
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else # ! custom location
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CT_GetFile "musl-${CT_LIBC_VERSION}" "${libc_src}"
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fi # ! custom location
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}
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do_libc_extract() {
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# If using custom directory location, nothing to do.
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if [ "${CT_LIBC_MUSL_CUSTOM}" = "y" ]; then
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# Abort if the custom directory is not found.
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if ! [ -d "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" ]; then
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CT_Abort "Directory not found: ${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}"
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fi
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return 0
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fi
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CT_Extract "musl-${CT_LIBC_VERSION}"
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CT_Patch "musl" "${CT_LIBC_VERSION}"
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}
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do_libc_check_config() {
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:
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}
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do_libc_configure() {
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CT_DoLog EXTRA "Configuring C library"
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local -a extra_cflags
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local -a extra_config
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# From buildroot:
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# gcc constant folding bug with weak aliases workaround
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# See http://www.openwall.com/lists/musl/2014/05/15/1
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if [ "${CT_CC_GCC_4_9_or_later}" = "y" ]; then
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extra_cflags+=("-fno-toplevel-reorder")
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fi
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if [ "${CT_LIBC_MUSL_DEBUG}" = "y" ]; then
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extra_config+=("--enable-debug")
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fi
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if [ "${CT_LIBC_MUSL_WARNINGS}" = "y" ]; then
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extra_config+=("--enable-warnings")
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fi
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extra_config+=( "--enable-optimize=${CT_LIBC_MUSL_OPTIMIZE}" )
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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 : the machine building musl
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# target : the machine musl runs on
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CT_DoExecLog CFG \
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CFLAGS="${extra_cflags[@]}" \
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CROSS_COMPILE="${CT_TARGET}-" \
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./configure \
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--host="${CT_TARGET}" \
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--target="${CT_TARGET}" \
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--prefix="/usr" \
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--disable-gcc-wrapper \
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"${extra_config[@]}"
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}
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do_libc_start_files() {
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CT_DoStep INFO "Installing C library headers"
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# Simply copy files until musl has the ability to build out-of-tree
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CT_DoLog EXTRA "Copying sources to build directory"
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CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" \
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"${CT_BUILD_DIR}/build-libc-headers"
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cd "${CT_BUILD_DIR}/build-libc-headers"
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do_libc_configure
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CT_DoLog EXTRA "Installing headers"
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CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install-headers
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CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" \
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crt/crt1.o crt/crti.o crt/crtn.o
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CT_DoExecLog ALL cp -av crt/crt*.o "${CT_SYSROOT_DIR}/usr/lib"
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CT_DoExecLog ALL ${CT_TARGET}-gcc -nostdlib \
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-nostartfiles -shared -x c /dev/null -o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
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CT_EndStep
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}
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do_libc() {
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CT_DoStep INFO "Installing C library"
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# Simply copy files until musl has the ability to build out-of-tree
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CT_DoLog EXTRA "Copying sources to build directory"
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CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" \
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"${CT_BUILD_DIR}/build-libc"
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cd "${CT_BUILD_DIR}/build-libc"
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do_libc_configure
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CT_DoLog EXTRA "Building C library"
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CT_DoExecLog ALL make ${JOBSFLAGS}
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CT_DoLog EXTRA "Installing C library"
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CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install
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CT_EndStep
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}
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