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8a1ef66776
After building the cross toolchain and compile a simple C program, objdump reports debug information even though -g modifier was not used. These debug segments are in glibc library and CRT files. So a new config entry: CT_GLIBC_ENABLE_DEBUG was added to control when we want to add debug information to glibc, by default is enabled. Signed-off-by: Guillermo E. Martinez <guillermo.e.martinez@oracle.com>
430 lines
17 KiB
Bash
430 lines
17 KiB
Bash
# This file adds functions to build glibc
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# Copyright 2007 Yann E. MORIN
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# Licensed under the GPL v2. See COPYING in the root of this package
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glibc_get()
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{
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local date
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local version
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CT_Fetch GLIBC
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return 0
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}
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glibc_extract()
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{
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CT_ExtractPatch GLIBC
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}
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# This function builds and install the full C library
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glibc_main()
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{
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local arg
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CT_DoStep INFO "Installing C library"
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CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc"
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CT_IterateMultilibs glibc_backend_once multilib
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CT_Popd
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CT_EndStep
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}
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# This backend builds the C library once
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# Usage: glibc_backend_once param=value [...]
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# Parameter : Definition : Type
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# multi_* : as defined in CT_IterateMultilibs : (varies) :
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glibc_backend_once()
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{
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# Glibc seems to be smart enough to know about the cases that can coexist
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# in the same root and installs them into proper multilib-os directory; all
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# we need is to point to the right root.
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local multi_flags multi_dir multi_os_dir multi_root multi_index multi_count multi_target
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local build_cflags build_cppflags build_ldflags
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local src_dir="${CT_SRC_DIR}/glibc"
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local -a extra_config
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local -a extra_make_args
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local glibc_cflags
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local arg opt
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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}: '${multi_flags}'"
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# Ensure sysroot (with suffix, if applicable) exists
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CT_DoExecLog ALL mkdir -p "${multi_root}"
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# Adjust target tuple according GLIBC quirks
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CT_DoArchGlibcAdjustTuple multi_target
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CT_DoLog EXTRA "Configuring C library"
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# If those two are missing, iconv build breaks
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extra_config+=( --disable-debug --disable-sanity-checks )
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if [ "${CT_GLIBC_ENABLE_OBSOLETE_RPC}" = "y" ]; then
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extra_config+=( --enable-obsolete-rpc )
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fi
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# Add some default glibc config options if not given by user.
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# We don't need to be conditional on whether the user did set different
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# values, as they CT_GLIBC_EXTRA_CONFIG_ARRAY is passed after
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# extra_config
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extra_config+=("$(glibc_min_kernel_config)")
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case "${CT_THREADS}" in
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nptl) extra_config+=("--with-__thread" "--with-tls");;
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linuxthreads) extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
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none) extra_config+=("--without-__thread" "--without-nptl")
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case "${CT_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
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*-tls*) ;;
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*) extra_config+=("--without-tls");;
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esac
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;;
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esac
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# FIXME static version of glibc seems to be broken:
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# build tries to use libc-modules.h which is generated from
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# soversions.i, which is only created for builds with shared libs.
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case "${CT_SHARED_LIBS}" in
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y) extra_config+=("--enable-shared");;
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*) extra_config+=("--disable-shared");;
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esac
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if [ "${CT_GLIBC_DISABLE_VERSIONING}" = "y" ]; then
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extra_config+=("--disable-versioning")
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fi
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if [ "${CT_GLIBC_OLDEST_ABI}" != "" ]; then
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extra_config+=("--enable-oldest-abi=${CT_GLIBC_OLDEST_ABI}")
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fi
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case "$(glibc_add_ons_list ,)" in
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"") extra_config+=("--enable-add-ons=no");;
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*) extra_config+=("--enable-add-ons=$(glibc_add_ons_list ,)");;
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esac
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[ "${CT_GLIBC_ENABLE_WERROR}" != "y" ] && extra_config+=("--disable-werror")
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[ -n "${CT_PKGVERSION}" ] && extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
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[ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
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if [ -n "${CT_GLIBC_SSP}" ]; then
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extra_config+=("--enable-stack-protector=${CT_GLIBC_SSP}")
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fi
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touch config.cache
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# Until it became explicitly controllable with --enable-stack-protector=...,
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# configure detected GCC support for -fstack-protector{,-strong} and
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# tried to enable it in some parts of glibc - which then failed to build.
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if [ -z "${CT_GLIBC_BUILD_SSP}" ]; then
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echo "libc_cv_ssp=no" >>config.cache
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echo "libc_cv_ssp_strong=no" >>config.cache
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fi
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if [ "${CT_GLIBC_FORCE_UNWIND}" = "y" ]; then
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echo "libc_cv_forced_unwind=yes" >>config.cache
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echo "libc_cv_c_cleanup=yes" >>config.cache
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fi
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# Pre-seed the configparms file with values from the config option
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printf "%s\n" "${CT_GLIBC_CONFIGPARMS}" > configparms
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if [ "${CT_GLIBC_ENABLE_DEBUG}" = "y" ]; then
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glibc_cflags+=" -g"
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fi
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# glibc can't be built without -O2 (reference needed!)
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glibc_cflags+=" -O2"
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if [ "${CT_GLIBC_ENABLE_COMMON_FLAG}" = "y" ]; then
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glibc_cflags+=" -fcommon"
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fi
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case "${CT_GLIBC_ENABLE_FORTIFIED_BUILD}" in
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y) ;;
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*) glibc_cflags+=" -U_FORTIFY_SOURCE";;
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esac
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# In the order of increasing precedence. Flags common to compiler and linker.
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glibc_cflags+=" ${CT_ALL_TARGET_CFLAGS}"
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glibc_cflags+=" ${CT_GLIBC_EXTRA_CFLAGS}"
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glibc_cflags+=" ${multi_flags}"
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# Analyze the resulting options for any extra configure switches to throw in.
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for opt in ${glibc_cflags}; do
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case ${opt} in
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-mhard-float|-mfloat-abi=hard|-mfloat-abi=softfp|-mno-soft-float|-mfpu)
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extra_config+=("--with-fp")
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;;
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-msoft-float|-mfloat-abi=soft|-mno-float|-mno-fpu)
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extra_config+=("--without-fp")
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;;
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esac
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done
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CT_DoArchGlibcAdjustConfigure extra_config "${glibc_cflags}"
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# ./configure is mislead by our tools override wrapper for bash
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# so just tell it where the real bash is _on_the_target_!
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# Notes:
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# - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
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# - ${BASH_SHELL} is only used to set BASH
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# - ${BASH} is only used to set the shebang
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# in two scripts to run on the target
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# So we can safely bypass bash detection at compile time.
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# Should this change in a future glibc release, we'd better
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# directly mangle the generated scripts _after_ they get built,
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# or even after they get installed...
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echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
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CT_SymlinkToolsMultilib
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# Configure with --prefix the way we want it on the target...
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# There are a whole lot of settings here. You'll probably want
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# to read up on what they all mean, and customize a bit, possibly
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# by setting GLIBC_EXTRA_CONFIG_ARRAY.
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# Compare these options with the ones used when installing
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# the glibc headers above - they're different.
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# Adding "--without-gd" option to avoid error "memusagestat.c:36:16:
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# gd.h: No such file or directory"
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# See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
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# Set BUILD_CC, or we won't be able to build datafiles
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# Run explicitly through CONFIG_SHELL, or the build breaks badly (loop-of-death)
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# when the shell is not bash... Sigh... :-(
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CT_DoLog DEBUG "Configuring with addons : '$(glibc_add_ons_list ,)'"
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CT_DoLog DEBUG "Extra config args passed : '${extra_config[*]}'"
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CT_DoLog DEBUG "Extra CFLAGS passed : '${glibc_cflags}'"
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CT_DoLog DEBUG "Configuring with --host : '${multi_target}'"
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# CFLAGS are only applied when compiling .c files. .S files are compiled with ASFLAGS,
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# but they are not passed by configure. Thus, pass everything in CC instead.
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# The CFLAGS variable needs to be cleared, else the default "-g -O2"
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# would override previous flags.
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CT_DoExecLog CFG \
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BUILD_CC=${CT_BUILD}-gcc \
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CC="${CT_TARGET}-${CT_CC} ${glibc_cflags}" \
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CFLAGS="" \
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AR=${CT_TARGET}-ar \
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RANLIB=${CT_TARGET}-ranlib \
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"${CONFIG_SHELL}" \
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"${src_dir}/configure" \
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--prefix=/usr \
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--build=${CT_BUILD} \
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--host=${multi_target} \
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--cache-file="$(pwd)/config.cache" \
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--without-cvs \
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--disable-profile \
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--without-gd \
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--with-headers="${CT_HEADERS_DIR}" \
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"${extra_config[@]}" \
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"${CT_GLIBC_EXTRA_CONFIG_ARRAY[@]}"
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# build hacks
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# Mask C++ compiler. Glibc 2.29+ attempts to build some tests using gcc++, but
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# we haven't built libstdc++ yet. Should really implement #808 after 1.24.0...
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extra_make_args+=( CXX= )
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case "${CT_ARCH},${CT_ARCH_CPU}" in
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powerpc,8??)
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# http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
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CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
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extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
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;;
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esac
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build_cflags="${CT_CFLAGS_FOR_BUILD}"
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build_cppflags=
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build_ldflags="${CT_LDFLAGS_FOR_BUILD}"
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case "$CT_BUILD" in
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*mingw*|*cygwin*|*msys*|*darwin*|*freebsd*)
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# When installing headers on Cygwin, Darwin, MSYS2 and MinGW-w64 sunrpc needs
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# gettext for building cross-rpcgen.
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build_cppflags="${build_cppflags} -I${CT_BUILDTOOLS_PREFIX_DIR}/include/"
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build_ldflags="${build_ldflags} -lintl -liconv"
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case "$CT_BUILD" in
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*cygwin*|*freebsd*)
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# Additionally, stat in FreeBSD, Cygwin, and possibly others
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# is always 64bit, so replace struct stat64 with stat.
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build_cppflags="${build_cppflags} -Dstat64=stat"
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;;
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esac
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;;
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esac
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# Make sure glibc build system respects our provided CFLAGS.
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extra_make_args+=( default_cflags= )
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extra_make_args+=( "BUILD_CFLAGS=${build_cflags}" )
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extra_make_args+=( "BUILD_CPPFLAGS=${build_cppflags}" )
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extra_make_args+=( "BUILD_LDFLAGS=${build_ldflags}" )
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CT_DoLog EXTRA "Building C library"
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CT_DoExecLog ALL make ${CT_JOBSFLAGS} \
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"${extra_make_args[@]}" \
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all
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CT_DoLog EXTRA "Installing C library"
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CT_DoExecLog ALL make ${CT_JOBSFLAGS} \
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"${extra_make_args[@]}" \
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install_root="${multi_root}" \
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install
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if [ "${CT_BUILD_MANUALS}" = "y" -a "${multi_index}" = "${multi_count}" ]; then
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# We only need to build the manuals once. Only build them on the
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# last multilib target. If it's not multilib, it will happen on the
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# only target.
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CT_DoLog EXTRA "Building and installing the C library manual"
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# Omit CT_JOBSFLAGS as GLIBC has problems building the
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# manuals in parallel
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CT_DoExecLog ALL make pdf html
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CT_DoExecLog ALL mkdir -p ${CT_PREFIX_DIR}/share/doc
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CT_DoExecLog ALL cp -av manual/*.pdf \
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manual/libc \
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${CT_PREFIX_DIR}/share/doc
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fi
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if [ "${CT_GLIBC_LOCALES}" = "y" -a "${multi_index}" = "${multi_count}" ]; then
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glibc_locales
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fi
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CT_EndStep
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}
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# Build up the addons list, separated with $1
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glibc_add_ons_list()
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{
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local sep="$1"
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local addons_list
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if [ "${CT_GLIBC_USE_PORTS_ADDON}" = "y" ]; then
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addons_list="${addons_list}${sep}ports"
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fi
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if [ "${CT_GLIBC_USE_NPTL_ADDON}" = "y" ]; then
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addons_list="${addons_list}${sep}nptl"
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fi
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if [ "${CT_GLIBC_USE_LIBIDN_ADDON}" = "y" ]; then
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addons_list="${addons_list}${sep}libidn"
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fi
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echo "${addons_list#${sep}}" # Remove leading separator if any
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}
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# Compute up the minimum supported Linux kernel version
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glibc_min_kernel_config()
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{
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local min_kernel_config
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case "${CT_GLIBC_EXTRA_CONFIG_ARRAY[*]}" in
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*--enable-kernel*) ;;
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*) if [ "${CT_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
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# TBD do we support that currently? We always seem to install kernel headers
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# We can't rely on the kernel version from the configuration,
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# because it might not be available if the user uses pre-installed
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# headers. On the other hand, both method will have the kernel
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# version installed in "usr/include/linux/version.h" in the sysroot.
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# Parse that instead of having two code-paths.
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version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
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if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
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CT_Abort "Linux version is unavailable in installed headers files"
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fi
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version_code="$(grep -E LINUX_VERSION_CODE "${version_code_file}" \
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|cut -d' ' -f 3 \
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)"
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version=$(((version_code>>16)&0xFF))
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patchlevel=$(((version_code>>8)&0xFF))
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sublevel=$((version_code&0xFF))
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min_kernel_config="${version}.${patchlevel}.${sublevel}"
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elif [ "${CT_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
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# Trim the fourth part of the linux version, keeping only the first three numbers
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min_kernel_config="$( echo "${CT_GLIBC_MIN_KERNEL_VERSION}" \
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|sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
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)"
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fi
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echo "--enable-kernel=${min_kernel_config}"
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;;
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esac
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}
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# Build and install the libc locales
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glibc_locales()
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{
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local src_dir="${CT_SRC_DIR}/glibc"
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local -a extra_config
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local glibc_cflags
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# To build locales, we'd need to build glibc for the build machine.
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# Bail out if the host is not supported.
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case "${CT_BUILD}" in
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*-cygwin|*-darwin*)
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CT_DoLog EXTRA "Skipping GNU libc locales: incompatible build machine"
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return
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;;
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esac
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mkdir -p "${CT_BUILD_DIR}/build-localedef"
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cd "${CT_BUILD_DIR}/build-localedef"
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CT_DoLog EXTRA "Configuring C library localedef"
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# Versions that don't support --with-pkgversion or --with-bugurl will cause
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# a harmless: `configure: WARNING: unrecognized options: --with-bugurl...`
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# If it's set, use it, if is a recognized option.
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if [ ! "${CT_TOOLCHAIN_PKGVERSION}" = "" ]; then
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[ -n "${CT_PKGVERSION}" ] && extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
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fi
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if [ ! "${CT_TOOLCHAIN_BUGURL}" = "" ]; then
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[ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
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fi
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CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
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glibc_cflags="-O2 -fno-stack-protector"
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case "${CT_GLIBC_ENABLE_FORTIFIED_BUILD}" in
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y) ;;
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*) glibc_cflags+=" -U_FORTIFY_SOURCE";;
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esac
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# ./configure is misled by our tools override wrapper for bash
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# so just tell it where the real bash is _on_the_target_!
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# Notes:
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# - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
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# - ${BASH_SHELL} is only used to set BASH
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# - ${BASH} is only used to set the shebang
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# in two scripts to run on the target
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# So we can safely bypass bash detection at compile time.
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# Should this change in a future glibc release, we'd better
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# directly mangle the generated scripts _after_ they get built,
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# or even after they get installed...
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echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
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# Configure with --prefix the way we want it on the target...
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CT_DoExecLog CFG \
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CFLAGS="${glibc_cflags}" \
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${CONFIG_SHELL} \
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"${src_dir}/configure" \
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--prefix=/usr \
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--cache-file="$(pwd)/config.cache" \
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--without-cvs \
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--disable-profile \
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--without-gd \
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--disable-debug \
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--disable-sanity-checks \
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"${extra_config[@]}"
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CT_DoLog EXTRA "Building C library localedef"
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CT_DoExecLog ALL make ${CT_JOBSFLAGS}
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# The target's endianness and uint32_t alignment should be passed as options
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# to localedef, but glibc's localedef does not support these options, which
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# means that the locale files generated here will be suitable for the target
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# only if it has the same endianness and uint32_t alignment as the host's.
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CT_DoLog EXTRA "Installing C library locales"
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CT_DoExecLog ALL make ${CT_JOBSFLAGS} \
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install_root="${CT_SYSROOT_DIR}" \
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localedata/install-locales
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}
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