# This file adds the function to build the gcc C compiler # Copyright 2007 Yann E. MORIN # Licensed under the GPL v2. See COPYING in the root of this package # Download gcc do_gcc_get() { local linaro_version="" local linaro_series="" if [ "${CT_CC_GCC_CUSTOM}" = "y" ]; then CT_GetCustom "gcc" "${CT_CC_GCC_CUSTOM_VERSION}" \ "${CT_CC_GCC_CUSTOM_LOCATION}" else case "${CT_CC_GCC_VERSION}" in linaro-*) CT_GetLinaro "gcc" "${CT_CC_GCC_VERSION}" ;; *) # The official gcc hosts put gcc under a gcc/release/ directory, # whereas the mirrors put it in the gcc/ directory. CT_GetFile "gcc-${CT_CC_GCC_VERSION}" \ {http,ftp,https}://ftp.gnu.org/gnu/gcc/gcc-${CT_CC_GCC_VERSION} \ ftp://{gcc.gnu.org,sourceware.org}/pub/gcc/releases/gcc-${CT_CC_GCC_VERSION} ;; esac fi # ! custom location # Starting with GCC 4.3, ecj is used for Java, and will only be # built if the configure script finds ecj.jar at the top of the # GCC source tree, which will not be there unless we get it and # put it there ourselves if [ "${CT_CC_LANG_JAVA_USE_ECJ}" = "y" ]; then CT_GetFile ecj-latest .jar http://mirrors.kernel.org/sourceware/java/ \ http://crosstool-ng.org/pub/java \ ftp://gcc.gnu.org/pub/java \ ftp://sourceware.org/pub/java fi } # Extract gcc do_gcc_extract() { CT_Extract "gcc-${CT_CC_GCC_VERSION}" CT_Patch "gcc" "${CT_CC_GCC_VERSION}" # Copy ecj-latest.jar to ecj.jar at the top of the GCC source tree if [ "${CT_CC_LANG_JAVA_USE_ECJ}" = "y" \ -a ! -f "${CT_SRC_DIR}/gcc-${CT_CC_GCC_VERSION}/ecj.jar" \ ]; then CT_DoExecLog ALL cp -v "${CT_TARBALLS_DIR}/ecj-latest.jar" "${CT_SRC_DIR}/gcc-${CT_CC_GCC_VERSION}/ecj.jar" fi if [ -n "${CT_ARCH_XTENSA_CUSTOM_NAME}" ]; then CT_ConfigureXtensa "gcc" "${CT_CC_GCC_VERSION}" fi } #------------------------------------------------------------------------------ # This function builds up the set of languages to enable # No argument expected, returns the comma-separated language list on stdout cc_gcc_lang_list() { local lang_list lang_list="c" [ "${CT_CC_LANG_CXX}" = "y" ] && lang_list+=",c++" [ "${CT_CC_LANG_FORTRAN}" = "y" ] && lang_list+=",fortran" [ "${CT_CC_LANG_ADA}" = "y" ] && lang_list+=",ada" [ "${CT_CC_LANG_JAVA}" = "y" ] && lang_list+=",java" [ "${CT_CC_LANG_OBJC}" = "y" ] && lang_list+=",objc" [ "${CT_CC_LANG_OBJCXX}" = "y" ] && lang_list+=",obj-c++" [ "${CT_CC_LANG_GOLANG}" = "y" ] && lang_list+=",go" lang_list+="${CT_CC_LANG_OTHERS:+,${CT_CC_LANG_OTHERS}}" printf "%s" "${lang_list}" } #------------------------------------------------------------------------------ # Return a value of a requested GCC spec cc_gcc_get_spec() { local spec=$1 local cc_and_cflags=$2 # GCC does not provide a facility to request a value of a spec string. # The only way to do that I found was to augment the spec file with # some dummy suffix handler that does nothing except printing it. touch temp-input.spec_eval { echo ".spec_eval:" echo "echo %(${spec})" } > "tmp-specs-${spec}" ${cc_and_cflags} -specs="tmp-specs-${spec}" -E temp-input.spec_eval } #------------------------------------------------------------------------------ # Report the type of a GCC option cc_gcc_classify_opt() { # Options present in multiple architectures case "${1}" in -march=*) echo "arch"; return;; -mabi=*) echo "abi"; return;; -mcpu=*|-mmcu=*) echo "cpu"; return;; -mtune=*) echo "tune"; return;; -mfpu=*) echo "fpu"; return;; -mhard-float|-msoft-float|-mno-soft-float|-mno-float|-mfloat-abi=*|\ -mfpu|-mno-fpu) echo "float"; return;; -EB|-EL|-mbig-endian|-mlittle-endian|-mbig|-mlittle|-meb|-mel|-mb|-ml) echo "endian"; return;; -mthumb|-marm) echo "mode"; return;; esac # Arch-specific options and aliases case "${CT_ARCH}" in m68k) case "${1}" in -m68881) echo "float"; return;; -m5[234]*|-mcfv4e) echo "cpu"; return;; -m68*|-mc68*) echo "arch"; return;; esac ;; mips) case "${1}" in -mips[1234]|-mips32|-mips32r*|-mips64|-mips64r*) echo "cpu"; return;; esac ;; sh) case "${1}" in -m[12345]*) echo "cpu"; return;; esac esac # All tried and failed echo "unknown" } #------------------------------------------------------------------------------ # This function lists the multilibs configured in the compiler (even if multilib # is disabled - so that it lists the default GCC/OS directory, which may differ # from the default 'lib'). It then performs a few multilib checks/quirks: # # 1. On SuperH target, configuring with default CPU (e.g. by supplying the target # name as 'sh4', which is what CT-NG does) results in the compiler being unable to # run if that same switch is passed to the resulting gcc (e.g. 'gcc -m4'). The reason # for this behavior is that the script that determines the sysroot suffix is not # aware of the default multilib selection, so it generates /m4 as the # suffixed sysroot. But the main driver, knowing that -m4 is the default, does not # even attempt to fall back to the non-suffixed sysroot (as it does with non-default # multilibs) - as a result, gcc fails to find any library if invoked with -m4. # The right solution would be to drop the default CPU from the multilib list # completely, or make the print-sysroot-suffix.sh script aware of the defaults # (which is not easy, as the defaults are not in tmake_file, but rather in tm_file...) # # 2. On MIPS target, gcc (or rather, ld, which it invokes under the hood) chokes # if supplied with two -mabi=* options. I.e., 'gcc -mabi=n32' and 'gcc -mabi=32' both # work, but 'gcc -mabi=32 -mabi=n32' produces an internal error in ld. Thus we do # not supply target's CFLAGS in multilib builds - and after compiling pass-1 gcc, # attempt to determine which CFLAGS need to be filtered out. cc_gcc_multilib_housekeeping() { local cc host local flags osdir dir multilibs i f local multilib_defaults local suffix sysroot base lnk local ml_arch ml_abi ml_cpu ml_tune ml_fpu ml_float ml_endian ml_mode ml_unknown ml local new_cflags for arg in "$@"; do eval "${arg// /\\ }" done if [ \( "${CT_CANADIAN}" = "y" -o "${CT_CROSS_NATIVE}" = "y" \) -a "${host}" = "${CT_HOST}" ]; then CT_DoLog EXTRA "Canadian Cross/Cross-native unable to confirm multilibs configuration "\ "directly; will use build-compiler for housekeeping." # Since we cannot run the desired compiler, substitute build-CC with the assumption # that the host-CC is configured in the same way. cc="${CT_BUILDTOOLS_PREFIX_DIR}/bin/${CT_TARGET}-${CT_CC}" fi # sed: prepend dashes or do nothing if default is empty string multilib_defaults=( $( cc_gcc_get_spec multilib_defaults "${cc}" | \ sed 's/\(^\|[[:space:]]\+\)\([^[:space:]]\)/ -\2/g' ) ) CT_DoLog EXTRA "gcc default flags: '${multilib_defaults}'" multilibs=( $( "${cc}" -print-multi-lib ) ) if [ ${#multilibs[@]} -ne 0 ]; then CT_DoLog EXTRA "gcc configured with these multilibs (including the default):" for i in "${multilibs[@]}"; do dir="lib/${i%%;*}" flags="${i#*;}" flags=${flags//@/ -} flags=$( echo ${flags} ) osdir="lib/"$( "${cc}" -print-multi-os-directory ${flags} ) CT_SanitizeVarDir dir osdir CT_DoLog EXTRA " '${flags}' --> ${dir} (gcc) ${osdir} (os)" for f in ${flags}; do eval ml_`cc_gcc_classify_opt ${f}`=seen done done else CT_DoLog WARN "no multilib configuration: GCC unusable?" fi # Filtering out some of the options provided in CT-NG config. Then *prepend* # them to CT_TARGET_CFLAGS, like scripts/crosstool-NG.sh does. Zero out # the stashed MULTILIB flags so that we don't process them again in the passes # that follow. CT_DoLog DEBUG "Configured target CFLAGS: '${CT_ARCH_TARGET_CFLAGS_MULTILIB}'" ml_unknown= # Pass through anything we don't know about for f in ${CT_ARCH_TARGET_CFLAGS_MULTILIB}; do eval ml=\$ml_`cc_gcc_classify_opt ${f}` if [ "${ml}" != "seen" ]; then new_cflags="${new_cflags} ${f}" fi done CT_DoLog DEBUG "Filtered target CFLAGS: '${new_cflags}'" CT_EnvModify CT_TARGET_CFLAGS "${new_cflags} ${CT_TARGET_CFLAGS}" CT_EnvModify CT_ARCH_TARGET_CFLAGS_MULTILIB "" # Currently, the only LDFLAGS are endianness-related CT_DoLog DEBUG "Configured target LDFLAGS: '${CT_ARCH_TARGET_LDFLAGS_MULTILIB}'" if [ "${ml_endian}" != "seen" ]; then CT_EnvModify CT_TARGET_LDFLAGS "${CT_ARCH_TARGET_LDFLAGS_MULTILIB} ${CT_TARGET_LDFLAGS}" CT_EnvModify CT_ARCH_TARGET_LDFLAGS_MULTILIB "" fi CT_DoLog DEBUG "Filtered target LDFLAGS: '${CT_ARCH_TARGET_LDFLAGS_MULTILIB}'" # Sysroot suffix fixup for the multilib default. suffix=$( cc_gcc_get_spec sysroot_suffix_spec "${cc} ${multilib_defaults}" ) if [ -n "${suffix}" ]; then base=${suffix%/*} sysroot=$( "${cc}" -print-sysroot ) if [ -n "${base}" ]; then CT_DoExecLog ALL mkdir -p "${sysroot}${base}" lnk=$( echo "${base#/}" | sed -e 's,[^/]*,..,g' ) else lnk=. fi CT_DoExecLog ALL rm -f "${sysroot}${suffix}" CT_DoExecLog ALL ln -sfv "${lnk}" "${sysroot}${suffix}" fi } #------------------------------------------------------------------------------ # Core gcc pass 1 do_gcc_core_pass_1() { local -a core_opts if [ "${CT_CC_CORE_PASS_1_NEEDED}" != "y" ]; then return 0 fi core_opts+=( "mode=static" ) core_opts+=( "host=${CT_BUILD}" ) core_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" ) core_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" ) core_opts+=( "cflags=${CT_CFLAGS_FOR_BUILD}" ) core_opts+=( "ldflags=${CT_LDFLAGS_FOR_BUILD}" ) core_opts+=( "lang_list=c" ) core_opts+=( "build_step=core1" ) CT_DoStep INFO "Installing pass-1 core C gcc compiler" CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-gcc-core-pass-1" do_gcc_core_backend "${core_opts[@]}" CT_Popd CT_EndStep } # Core gcc pass 2 do_gcc_core_pass_2() { local -a core_opts if [ "${CT_CC_CORE_PASS_2_NEEDED}" != "y" ]; then return 0 fi # Common options: core_opts+=( "host=${CT_BUILD}" ) core_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" ) core_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" ) core_opts+=( "cflags=${CT_CFLAGS_FOR_BUILD}" ) core_opts+=( "ldflags=${CT_LDFLAGS_FOR_BUILD}" ) core_opts+=( "lang_list=c" ) core_opts+=( "build_step=core2" ) # Different conditions are at stake here: # - In case the threading model is NPTL, we need a shared-capable core # gcc; in all other cases, we need a static-only core gcc. # - In case the threading model is NPTL or win32, or gcc is 4.3 or # later, we need to build libgcc case "${CT_THREADS}" in nptl) core_opts+=( "mode=shared" ) core_opts+=( "build_libgcc=yes" ) ;; win32) core_opts+=( "mode=static" ) core_opts+=( "build_libgcc=yes" ) ;; *) core_opts+=( "mode=static" ) core_opts+=( "build_libgcc=yes" ) ;; esac CT_DoStep INFO "Installing pass-2 core C gcc compiler" CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-gcc-core-pass-2" do_gcc_core_backend "${core_opts[@]}" CT_Popd CT_EndStep } #------------------------------------------------------------------------------ # Build core gcc # This function is used to build the core C compiler. # Usage: do_gcc_core_backend param=value [...] # Parameter : Definition : Type : Default # mode : build a 'static', 'shared' or 'baremetal' : string : (none) # host : the machine the core will run on : tuple : (none) # prefix : dir prefix to install into : dir : (none) # complibs : dir where complibs are installed : dir : (none) # lang_list : the list of languages to build : string : (empty) # build_libgcc : build libgcc or not : bool : no # build_libstdcxx : build libstdc++ or not : bool : no # build_libgfortran : build libgfortran or not : bool : no # build_staticlinked : build statically linked or not : bool : no # build_manuals : whether to build manuals or not : bool : no # cflags : cflags to use : string : (empty) # ldflags : ldflags to use : string : (empty) # build_step : build step 'core1', 'core2', 'gcc_build' # or 'gcc_host' : string : (none) # Usage: do_gcc_core_backend mode=[static|shared|baremetal] build_libgcc=[yes|no] build_staticlinked=[yes|no] do_gcc_core_backend() { local mode local build_libgcc=no local build_libstdcxx=no local build_libgfortran=no local build_staticlinked=no local build_manuals=no local host local prefix local complibs local lang_list local cflags local ldflags local build_step local log_txt local tmp local -a host_libstdcxx_flags local -a extra_config local -a core_LDFLAGS local -a core_targets local -a core_targets_all local -a core_targets_install local -a extra_user_config local arg for arg in "$@"; do eval "${arg// /\\ }" done # This function gets called in case of a bare metal compiler for the final gcc, too. case "${build_step}" in core1|core2) CT_DoLog EXTRA "Configuring core C gcc compiler" log_txt="gcc" extra_user_config=( "${CT_CC_GCC_CORE_EXTRA_CONFIG_ARRAY[@]}" ) ;; gcc_build|gcc_host) CT_DoLog EXTRA "Configuring final gcc compiler" extra_user_config=( "${CT_CC_GCC_EXTRA_CONFIG_ARRAY[@]}" ) log_txt="final gcc compiler" if [ "${CT_CC_GCC_TARGET_FINAL}" = "y" ]; then # to inhibit the libiberty and libgcc tricks later on build_libgcc=no fi ;; *) CT_Abort "Internal Error: 'build_step' must be one of: 'core1', 'core2', 'gcc_build' or 'gcc_host', not '${build_step:-(empty)}'" ;; esac case "${mode}" in static) extra_config+=("--with-newlib") extra_config+=("--enable-threads=no") extra_config+=("--disable-shared") ;; shared) extra_config+=("--enable-shared") ;; baremetal) extra_config+=("--with-newlib") extra_config+=("--enable-threads=no") extra_config+=("--disable-shared") ;; *) CT_Abort "Internal Error: 'mode' must be one of: 'static', 'shared' or 'baremetal', not '${mode:-(empty)}'" ;; esac # This is only needed when building libstdc++ in a canadian environment with # this function being used for final step (i.e., when building for bare metal). if [ "${build_step}" = "gcc_build" ]; then CT_DoLog DEBUG "Copying headers to install area of core C compiler" CT_DoExecLog ALL cp -a "${CT_HEADERS_DIR}" "${prefix}/${CT_TARGET}/include" fi for tmp in ARCH ABI CPU TUNE FPU FLOAT; do eval tmp="\${CT_ARCH_WITH_${tmp}}" if [ -n "${tmp}" ]; then extra_config+=("${tmp}") fi done extra_config+=("--with-pkgversion=${CT_PKGVERSION}") [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}") if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then extra_config+=("--enable-__cxa_atexit") else extra_config+=("--disable-__cxa_atexit") fi if [ -n "${CT_CC_GCC_ENABLE_CXX_FLAGS}" \ -a "${mode}" = "baremetal" ]; then extra_config+=("--enable-cxx-flags=${CT_CC_GCC_ENABLE_CXX_FLAGS}") fi extra_config+=(--disable-libgomp) extra_config+=(--disable-libmudflap) extra_config+=(--disable-libmpx) if [ "${CT_CC_GCC_LIBSSP}" = "y" ]; then extra_config+=(--enable-libssp) else extra_config+=(--disable-libssp) fi if [ "${CT_CC_GCC_LIBQUADMATH}" = "y" ]; then extra_config+=(--enable-libquadmath) extra_config+=(--enable-libquadmath-support) else extra_config+=(--disable-libquadmath) extra_config+=(--disable-libquadmath-support) fi core_LDFLAGS+=("${ldflags}") # *** WARNING ! *** # Keep this full if-else-if-elif-fi-fi block in sync # with the same block in do_gcc_backend, below. if [ "${build_staticlinked}" = "yes" ]; then core_LDFLAGS+=("-static") host_libstdcxx_flags+=("-static-libgcc") host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++") host_libstdcxx_flags+=("-lm") # Companion libraries are build static (eg !shared), so # the libstdc++ is not pulled automatically, although it # is needed. Shoe-horn it in our LDFLAGS # Ditto libm on some Fedora boxen core_LDFLAGS+=("-lstdc++") core_LDFLAGS+=("-lm") else if [ "${CT_CC_GCC_STATIC_LIBSTDCXX}" = "y" ]; then # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2 # build script # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++, # see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html host_libstdcxx_flags+=("-static-libgcc") host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic") host_libstdcxx_flags+=("-lm") fi # When companion libraries are build static (eg !shared), # the libstdc++ is not pulled automatically, although it # is needed. Shoe-horn it in our LDFLAGS # Ditto libm on some Fedora boxen core_LDFLAGS+=("-lstdc++") core_LDFLAGS+=("-lm") fi extra_config+=("--with-gmp=${complibs}") extra_config+=("--with-mpfr=${complibs}") extra_config+=("--with-mpc=${complibs}") if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then if [ "${CT_ISL}" = "y" ]; then extra_config+=("--with-isl=${complibs}") fi if [ "${CT_CLOOG}" = "y" ]; then extra_config+=("--with-cloog=${complibs}") fi else extra_config+=("--with-isl=no") extra_config+=("--with-cloog=no") fi if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then extra_config+=("--enable-lto") else extra_config+=("--disable-lto") fi if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}") fi if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then extra_config+=("--enable-target-optspace") fi if [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ]; then extra_config+=("--disable-libstdcxx-pch") fi case "${CT_CC_GCC_LDBL_128}" in y) extra_config+=("--with-long-double-128");; m) ;; "") extra_config+=("--without-long-double-128");; esac if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then extra_config+=( --enable-linker-build-id ) fi case "${CT_CC_GCC_LNK_HASH_STYLE}" in "") ;; *) extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );; esac case "${CT_CC_GCC_DEC_FLOATS}" in "") ;; *) extra_config+=( "--enable-decimal-float=${CT_CC_GCC_DEC_FLOATS}" );; esac case "${CT_ARCH}" in mips) case "${CT_CC_GCC_mips_llsc}" in y) extra_config+=( --with-llsc );; m) ;; *) extra_config+=( --without-llsc );; esac case "${CT_CC_GCC_mips_synci}" in y) extra_config+=( --with-synci );; m) ;; *) extra_config+=( --without-synci );; esac if [ "${CT_CC_GCC_mips_plt}" ]; then extra_config+=( --with-mips-plt ) fi ;; # ARCH is mips esac if [ "${CT_TOOLCHAIN_ENABLE_NLS}" = "y" ]; then extra_config+=("--with-libintl-prefix=${complibs}") else extra_config+=("--disable-nls") fi if [ "${CT_CC_GCC_SYSTEM_ZLIB}" = "y" ]; then extra_config+=("--with-system-zlib") fi case "${CT_CC_GCC_CONFIG_TLS}" in y) extra_config+=("--enable-tls");; m) ;; "") extra_config+=("--disable-tls");; esac # Some versions of gcc have a defective --enable-multilib. # Since that's the default, only pass --disable-multilib. For multilib, # also enable multiarch. Without explicit --enable-multiarch, pass-1 # compiler is configured as multilib/no-multiarch and pass-2/final # are multilib/multiarch (because gcc autodetects multiarch based on # multiple instances of crt*.o in the install directory - which do # not exist in pass-1). if [ "${CT_MULTILIB}" != "y" ]; then extra_config+=("--disable-multilib") else extra_config+=("--enable-multiarch") if [ -n "${CT_CC_GCC_MULTILIB_LIST}" ]; then extra_config+=("--with-multilib-list=${CT_CC_GCC_MULTILIB_LIST}") fi fi CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'" # Clang's default bracket-depth is 256, and building GCC # requires somewhere between 257 and 512. if ${CT_BUILD}-gcc --version 2>&1 | grep clang; then cflags="$cflags "-fbracket-depth=512 fi # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532) CT_DoExecLog CFG \ CC_FOR_BUILD="${CT_BUILD}-gcc" \ CFLAGS="${cflags}" \ CXXFLAGS="${cflags}" \ LDFLAGS="${core_LDFLAGS[*]}" \ CFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}" \ CXXFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}" \ LDFLAGS_FOR_TARGET="${CT_TARGET_LDFLAGS}" \ ${CONFIG_SHELL} \ "${CT_SRC_DIR}/gcc-${CT_CC_GCC_VERSION}/configure" \ --build=${CT_BUILD} \ --host=${host} \ --target=${CT_TARGET} \ --prefix="${prefix}" \ --with-local-prefix="${CT_SYSROOT_DIR}" \ ${CC_CORE_SYSROOT_ARG} \ "${extra_config[@]}" \ --enable-languages="${lang_list}" \ "${extra_user_config[@]}" if [ "${build_libgcc}" = "yes" ]; then # HACK: we need to override SHLIB_LC from gcc/config/t-slibgcc-elf-ver or # gcc/config/t-libunwind so -lc is removed from the link for # libgcc_s.so, as we do not have a target -lc yet. # This is not as ugly as it appears to be ;-) All symbols get resolved # during the glibc build, and we provide a proper libgcc_s.so for the # cross toolchain during the final gcc build. # # As we cannot modify the source tree, nor override SHLIB_LC itself # during configure or make, we have to edit the resultant # gcc/libgcc.mk itself to remove -lc from the link. # This causes us to have to jump through some hoops... # # To produce libgcc.mk to edit we firstly require libiberty.a, # so we configure then build it. # Next we have to configure gcc, create libgcc.mk then edit it... # So much easier if we just edit the source tree, but hey... if [ ! -f "${CT_SRC_DIR}/gcc-${CT_CC_GCC_VERSION}/gcc/BASE-VER" ]; then CT_DoExecLog CFG make ${JOBSFLAGS} configure-libiberty CT_DoExecLog ALL make ${JOBSFLAGS} -C libiberty libiberty.a CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp else CT_DoExecLog CFG make ${JOBSFLAGS} configure-gcc configure-libcpp configure-build-libiberty CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp all-build-libiberty fi # HACK: gcc-4.2 uses libdecnumber to build libgcc.mk, so build it here. if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_GCC_VERSION}/libdecnumber" ]; then CT_DoExecLog CFG make ${JOBSFLAGS} configure-libdecnumber CT_DoExecLog ALL make ${JOBSFLAGS} -C libdecnumber libdecnumber.a fi # HACK: gcc-4.8 uses libbacktrace to make libgcc.mvars, so make it here. if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_GCC_VERSION}/libbacktrace" ]; then CT_DoExecLog CFG make ${JOBSFLAGS} configure-libbacktrace CT_DoExecLog ALL make ${JOBSFLAGS} -C libbacktrace fi libgcc_rule="libgcc.mvars" core_targets=( gcc target-libgcc ) # On bare metal and canadian build the host-compiler is used when # actually the build-system compiler is required. Choose the correct # compilers for canadian build and use the defaults on other # configurations. if [ "${CT_BARE_METAL},${CT_CANADIAN}" = "y,y" ]; then repair_cc="CC_FOR_BUILD=${CT_BUILD}-gcc \ CXX_FOR_BUILD=${CT_BUILD}-g++ \ GCC_FOR_TARGET=${CT_TARGET}-${CT_CC}" else repair_cc="" fi CT_DoExecLog ALL make ${JOBSFLAGS} -C gcc ${libgcc_rule} \ ${repair_cc} sed -r -i -e 's@-lc@@g' gcc/${libgcc_rule} else # build_libgcc core_targets=( gcc ) fi # ! build libgcc if [ "${build_libstdcxx}" = "yes" \ -a "${CT_CC_LANG_CXX}" = "y" \ ]; then core_targets+=( target-libstdc++-v3 ) fi if [ "${build_libgfortran}" = "yes" \ -a "${CT_CC_LANG_FORTRAN}" = "y" \ ]; then core_targets+=( target-libgfortran ) fi core_targets_all="${core_targets[@]/#/all-}" core_targets_install="${core_targets[@]/#/install-}" case "${build_step}" in gcc_build|gcc_host) if [ "${CT_CC_GCC_TARGET_FINAL}" = "y" ]; then core_targets_all=all core_targets_install=install fi ;; esac CT_DoLog EXTRA "Building ${log_txt}" CT_DoExecLog ALL make ${JOBSFLAGS} ${core_targets_all} # Do not pass ${JOBSFLAGS} here: recent GCC builds have been failing # in parallel 'make install' at random locations: libitm, libcilk, # always for the files that are installed more than once to the same # location (such as libitm.info). # The symptom is that the install command fails with "File exists" # error; running the same command manually succeeds. It looks like # attempts to remove the destination and re-create it, but another # install gets in the way. CT_DoLog EXTRA "Installing ${log_txt}" CT_DoExecLog ALL make ${core_targets_install} # Remove the libtool "pseudo-libraries": having them in the installed # tree makes the libtoolized utilities that are built next assume # that, for example, libsupc++ is an "accessory library", and not include # -lsupc++ to the link flags. That breaks ltrace, for example. CT_DoLog EXTRA "Housekeeping for core gcc compiler" CT_Pushd "${prefix}" find . -type f -name "*.la" -exec rm {} \; |CT_DoLog ALL CT_Popd if [ "${build_manuals}" = "yes" ]; then CT_DoLog EXTRA "Building the GCC manuals" CT_DoExecLog ALL make pdf html CT_DoLog EXTRA "Installing the GCC manuals" CT_DoExecLog ALL make install-{pdf,html}-gcc fi # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-${CT_CC} to always be able # to call the C compiler with the same, somewhat canonical name. # check whether compiler has an extension file="$( ls -1 "${prefix}/bin/${CT_TARGET}-${CT_CC}."* 2>/dev/null || true )" [ -z "${file}" ] || ext=".${file##*.}" if [ -f "${prefix}/bin/${CT_TARGET}-${CT_CC}${ext}" ]; then CT_DoExecLog ALL ln -sfv "${CT_TARGET}-${CT_CC}${ext}" "${prefix}/bin/${CT_TARGET}-cc${ext}" fi cc_gcc_multilib_housekeeping cc="${prefix}/bin/${CT_TARGET}-${CT_CC}" \ host="${host}" } #------------------------------------------------------------------------------ # Build complete gcc to run on build do_gcc_for_build() { local -a build_final_opts local build_final_backend # If native or simple cross toolchain is being built, then build==host; # nothing to do. case "${CT_TOOLCHAIN_TYPE}" in native|cross) return 0;; esac build_final_opts+=( "host=${CT_BUILD}" ) build_final_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" ) build_final_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" ) build_final_opts+=( "cflags=${CT_CFLAGS_FOR_BUILD}" ) build_final_opts+=( "ldflags=${CT_LDFLAGS_FOR_BUILD}" ) build_final_opts+=( "lang_list=$( cc_gcc_lang_list )" ) build_final_opts+=( "build_step=gcc_build" ) if [ "${CT_BARE_METAL}" = "y" ]; then # In the tests I've done, bare-metal was not impacted by the # lack of such a compiler, but better safe than sorry... build_final_opts+=( "mode=baremetal" ) build_final_opts+=( "build_libgcc=yes" ) build_final_opts+=( "build_libstdcxx=yes" ) build_final_opts+=( "build_libgfortran=yes" ) if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then build_final_opts+=( "build_staticlinked=yes" ) fi build_final_backend=do_gcc_core_backend else build_final_backend=do_gcc_backend fi CT_DoStep INFO "Installing final gcc compiler for build" CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-gcc-final-build-${CT_BUILD}" "${build_final_backend}" "${build_final_opts[@]}" CT_Popd CT_EndStep } gcc_movelibs() { local multi_flags multi_dir multi_os_dir multi_root multi_index multi_count local gcc_dir for arg in "$@"; do eval "${arg// /\\ }" done # Move only files, directories are for other multilibs. We're looking inside # GCC's directory structure, thus use unmangled multi_os_dir that GCC reports. gcc_dir="${CT_PREFIX_DIR}/${CT_TARGET}/lib/${multi_os_dir_gcc}" if [ ! -d "${gcc_dir}" ]; then # GCC didn't install anything outside of sysroot return fi ls "${gcc_dir}" | while read f; do case "${f}" in *.ld) # Linker scripts remain in GCC's directory; elf2flt insists on # finding them there. continue ;; esac if [ -f "${gcc_dir}/${f}" ]; then CT_DoExecLog ALL mkdir -p "${multi_root}/lib/${multi_os_dir}" CT_DoExecLog ALL mv "${gcc_dir}/${f}" "${multi_root}/lib/${multi_os_dir}/${f}" fi done } #------------------------------------------------------------------------------ # Build final gcc to run on host do_gcc_for_host() { local -a final_opts local final_backend final_opts+=( "host=${CT_HOST}" ) final_opts+=( "prefix=${CT_PREFIX_DIR}" ) final_opts+=( "complibs=${CT_HOST_COMPLIBS_DIR}" ) final_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" ) final_opts+=( "ldflags=${CT_LDFLAGS_FOR_HOST}" ) final_opts+=( "lang_list=$( cc_gcc_lang_list )" ) final_opts+=( "build_step=gcc_host" ) if [ "${CT_BUILD_MANUALS}" = "y" ]; then final_opts+=( "build_manuals=yes" ) fi if [ "${CT_BARE_METAL}" = "y" ]; then final_opts+=( "mode=baremetal" ) final_opts+=( "build_libgcc=yes" ) final_opts+=( "build_libstdcxx=yes" ) final_opts+=( "build_libgfortran=yes" ) if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then final_opts+=( "build_staticlinked=yes" ) fi final_backend=do_gcc_core_backend else final_backend=do_gcc_backend fi CT_DoStep INFO "Installing final gcc compiler" CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-gcc-final" "${final_backend}" "${final_opts[@]}" CT_Popd # GCC installs stuff (including libgcc) into its own /lib dir, # outside of sysroot, breaking linking with -static-libgcc. # Fix up by moving the libraries into the sysroot. if [ "${CT_USE_SYSROOT}" = "y" ]; then CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-gcc-final-movelibs" CT_IterateMultilibs gcc_movelibs movelibs CT_Popd fi CT_EndStep } #------------------------------------------------------------------------------ # Build the final gcc # Usage: do_gcc_backend param=value [...] # Parameter : Definition : Type : Default # host : the host we run onto : tuple : (none) # prefix : the runtime prefix : dir : (none) # complibs : the companion libraries prefix : dir : (none) # cflags : cflags to use : string : (empty) # ldflags : ldflags to use : string : (empty) # lang_list : the list of languages to build : string : (empty) # build_manuals : whether to build manuals or not : bool : no do_gcc_backend() { local host local prefix local complibs local lang_list local cflags local ldflags local build_manuals local -a host_libstdcxx_flags local -a extra_config local -a final_LDFLAGS local tmp local arg for arg in "$@"; do eval "${arg// /\\ }" done CT_DoLog EXTRA "Configuring final gcc compiler" # Enable selected languages extra_config+=("--enable-languages=${lang_list}") for tmp in ARCH ABI CPU TUNE FPU FLOAT; do eval tmp="\${CT_ARCH_WITH_${tmp}}" if [ -n "${tmp}" ]; then extra_config+=("${tmp}") fi done [ "${CT_SHARED_LIBS}" = "y" ] || extra_config+=("--disable-shared") extra_config+=("--with-pkgversion=${CT_PKGVERSION}") [ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}") case "${CT_CC_GCC_SJLJ_EXCEPTIONS}" in y) extra_config+=("--enable-sjlj-exceptions");; m) ;; "") extra_config+=("--disable-sjlj-exceptions");; esac if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then extra_config+=("--enable-__cxa_atexit") else extra_config+=("--disable-__cxa_atexit") fi if [ -n "${CT_CC_GCC_ENABLE_CXX_FLAGS}" ]; then extra_config+=("--enable-cxx-flags=${CT_CC_GCC_ENABLE_CXX_FLAGS}") fi if [ "${CT_THREADS}" = "none" ]; then extra_config+=(--disable-libatomic) fi if [ "${CT_CC_GCC_LIBMUDFLAP}" = "y" ]; then extra_config+=(--enable-libmudflap) else extra_config+=(--disable-libmudflap) fi if [ "${CT_CC_GCC_LIBGOMP}" = "y" ]; then extra_config+=(--enable-libgomp) else extra_config+=(--disable-libgomp) fi if [ "${CT_CC_GCC_LIBSSP}" = "y" ]; then extra_config+=(--enable-libssp) else extra_config+=(--disable-libssp) fi if [ "${CT_CC_GCC_LIBQUADMATH}" = "y" ]; then extra_config+=(--enable-libquadmath) extra_config+=(--enable-libquadmath-support) else extra_config+=(--disable-libquadmath) extra_config+=(--disable-libquadmath-support) fi if [ "${CT_CC_GCC_LIBSANITIZER}" = "y" ]; then extra_config+=(--enable-libsanitizer) else extra_config+=(--disable-libsanitizer) fi if [ "${CT_CC_GCC_HAS_LIBMPX}" = "y" ]; then if [ "${CT_CC_GCC_LIBMPX}" = "y" ]; then extra_config+=(--enable-libmpx) else extra_config+=(--disable-libmpx) fi fi final_LDFLAGS+=("${ldflags}") # *** WARNING ! *** # Keep this full if-else-if-elif-fi-fi block in sync # with the same block in do_gcc_core_backend, above. if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then final_LDFLAGS+=("-static") host_libstdcxx_flags+=("-static-libgcc") host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++") host_libstdcxx_flags+=("-lm") # Companion libraries are build static (eg !shared), so # the libstdc++ is not pulled automatically, although it # is needed. Shoe-horn it in our LDFLAGS # Ditto libm on some Fedora boxen final_LDFLAGS+=("-lstdc++") final_LDFLAGS+=("-lm") else if [ "${CT_CC_GCC_STATIC_LIBSTDCXX}" = "y" ]; then # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2 # build script # INFO: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++, # see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html host_libstdcxx_flags+=("-static-libgcc") host_libstdcxx_flags+=("-Wl,-Bstatic,-lstdc++,-Bdynamic") host_libstdcxx_flags+=("-lm") fi # When companion libraries are build static (eg !shared), # the libstdc++ is not pulled automatically, although it # is needed. Shoe-horn it in our LDFLAGS # Ditto libm on some Fedora boxen final_LDFLAGS+=("-lstdc++") final_LDFLAGS+=("-lm") fi extra_config+=("--with-gmp=${complibs}") extra_config+=("--with-mpfr=${complibs}") extra_config+=("--with-mpc=${complibs}") if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then if [ "${CT_ISL}" = "y" ]; then extra_config+=("--with-isl=${complibs}") fi if [ "${CT_CLOOG}" = "y" ]; then extra_config+=("--with-cloog=${complibs}") fi else extra_config+=("--with-isl=no") extra_config+=("--with-cloog=no") fi if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then extra_config+=("--enable-lto") else extra_config+=("--disable-lto") fi if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}") fi if [ "${CT_THREADS}" = "none" ]; then extra_config+=("--disable-threads") else if [ "${CT_THREADS}" = "win32" ]; then extra_config+=("--enable-threads=win32") extra_config+=("--disable-win32-registry") else extra_config+=("--enable-threads=posix") fi fi if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then extra_config+=("--enable-target-optspace") fi if [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ]; then extra_config+=("--disable-libstdcxx-pch") fi case "${CT_CC_GCC_LDBL_128}" in y) extra_config+=("--with-long-double-128");; m) ;; "") extra_config+=("--without-long-double-128");; esac if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then extra_config+=( --enable-linker-build-id ) fi case "${CT_CC_GCC_LNK_HASH_STYLE}" in "") ;; *) extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );; esac case "${CT_CC_GCC_DEC_FLOATS}" in "") ;; *) extra_config+=( "--enable-decimal-float=${CT_CC_GCC_DEC_FLOATS}" );; esac if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then extra_config+=( --enable-plugin ) else extra_config+=( --disable-plugin ) fi if [ "${CT_CC_GCC_GOLD}" = "y" ]; then extra_config+=( --enable-gold ) fi case "${CT_ARCH}" in mips) case "${CT_CC_GCC_mips_llsc}" in y) extra_config+=( --with-llsc );; m) ;; *) extra_config+=( --without-llsc );; esac case "${CT_CC_GCC_mips_synci}" in y) extra_config+=( --with-synci );; m) ;; *) extra_config+=( --without-synci );; esac if [ "${CT_CC_GCC_mips_plt}" ]; then extra_config+=( --with-mips-plt ) fi ;; # ARCH is mips esac if [ "${CT_TOOLCHAIN_ENABLE_NLS}" = "y" ]; then extra_config+=("--with-libintl-prefix=${complibs}") else extra_config+=("--disable-nls") fi if [ "${CT_CC_GCC_SYSTEM_ZLIB}" = "y" ]; then extra_config+=("--with-system-zlib") fi case "${CT_CC_GCC_CONFIG_TLS}" in y) extra_config+=("--enable-tls");; m) ;; "") extra_config+=("--disable-tls");; esac # Some versions of gcc have a defective --enable-multilib. # Since that's the default, only pass --disable-multilib. if [ "${CT_MULTILIB}" != "y" ]; then extra_config+=("--disable-multilib") else extra_config+=("--enable-multiarch") if [ -n "${CT_CC_GCC_MULTILIB_LIST}" ]; then extra_config+=("--with-multilib-list=${CT_CC_GCC_MULTILIB_LIST}") fi fi CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'" # Clang's default bracket-depth is 256, and building GCC # requires somewhere between 257 and 512. if ${CT_BUILD}-gcc --version 2>&1 | grep clang; then cflags="$cflags "-fbracket-depth=512 fi CT_DoExecLog CFG \ CC_FOR_BUILD="${CT_BUILD}-gcc" \ CFLAGS="${cflags}" \ CXXFLAGS="${cflags}" \ LDFLAGS="${final_LDFLAGS[*]}" \ CFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}" \ CXXFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}" \ LDFLAGS_FOR_TARGET="${CT_TARGET_LDFLAGS}" \ ${CONFIG_SHELL} \ "${CT_SRC_DIR}/gcc-${CT_CC_GCC_VERSION}/configure" \ --build=${CT_BUILD} \ --host=${host} \ --target=${CT_TARGET} \ --prefix="${prefix}" \ ${CC_SYSROOT_ARG} \ "${extra_config[@]}" \ --with-local-prefix="${CT_SYSROOT_DIR}" \ --enable-long-long \ "${CT_CC_GCC_EXTRA_CONFIG_ARRAY[@]}" if [ "${CT_CANADIAN}" = "y" ]; then CT_DoLog EXTRA "Building libiberty" CT_DoExecLog ALL make ${JOBSFLAGS} all-build-libiberty fi CT_DoLog EXTRA "Building final gcc compiler" CT_DoExecLog ALL make ${JOBSFLAGS} all # See the note on issues with parallel 'make install' in GCC above. CT_DoLog EXTRA "Installing final gcc compiler" if [ "${CT_STRIP_TARGET_TOOLCHAIN_EXECUTABLES}" = "y" ]; then CT_DoExecLog ALL make install-strip else CT_DoExecLog ALL make install fi # Remove the libtool "pseudo-libraries": having them in the installed # tree makes the libtoolized utilities that are built next assume # that, for example, libsupc++ is an "accessory library", and not include # -lsupc++ to the link flags. That breaks ltrace, for example. CT_DoLog EXTRA "Housekeeping for final gcc compiler" CT_Pushd "${prefix}" find . -type f -name "*.la" -exec rm {} \; |CT_DoLog ALL CT_Popd if [ "${build_manuals}" = "yes" ]; then CT_DoLog EXTRA "Building the GCC manuals" CT_DoExecLog ALL make pdf html CT_DoLog EXTRA "Installing the GCC manuals" CT_DoExecLog ALL make install-{pdf,html}-gcc fi # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-${CT_CC} to always be able # to call the C compiler with the same, somewhat canonical name. # check whether compiler has an extension file="$( ls -1 "${CT_PREFIX_DIR}/bin/${CT_TARGET}-${CT_CC}."* 2>/dev/null || true )" [ -z "${file}" ] || ext=".${file##*.}" if [ -f "${CT_PREFIX_DIR}/bin/${CT_TARGET}-${CT_CC}${ext}" ]; then CT_DoExecLog ALL ln -sfv "${CT_TARGET}-${CT_CC}${ext}" "${prefix}/bin/${CT_TARGET}-cc${ext}" fi cc_gcc_multilib_housekeeping cc="${prefix}/bin/${CT_TARGET}-${CT_CC}" \ host="${host}" }