From 320e0789812c511e8ab31fc6bec9b3162a6416ae Mon Sep 17 00:00:00 2001 From: "Andreas K. Hüttel" Date: Sun, 5 Dec 2021 21:31:55 +0100 Subject: sys-libs/glibc: some rework of 9999 ebuild, needs testing (e.g. crossdev) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Andreas K. Hüttel --- sys-libs/glibc/glibc-9999.ebuild | 175 +++++++++++++++++++++------------------ 1 file changed, 96 insertions(+), 79 deletions(-) (limited to 'sys-libs') diff --git a/sys-libs/glibc/glibc-9999.ebuild b/sys-libs/glibc/glibc-9999.ebuild index 39b77e312fa5..ea87ec9994c8 100644 --- a/sys-libs/glibc/glibc-9999.ebuild +++ b/sys-libs/glibc/glibc-9999.ebuild @@ -401,6 +401,7 @@ setup_flags() { filter-flags '-O?' append-flags -O2 fi + strip-unsupported-flags filter-flags -m32 -m64 '-mabi=*' @@ -515,14 +516,103 @@ setup_env() { einfo "Skip CC ABI injection. We can't use (cross-)compiler yet." return 0 fi - local VAR=CFLAGS_${ABI} + + # Glibc does not work with gold (for various reasons) #269274. + tc-ld-disable-gold + + if use doc ; then + export MAKEINFO=makeinfo + else + export MAKEINFO=/dev/null + fi + + # Reset CC to the value at start of emerge + export CC=${__ORIG_CC:-${CC}} + + if tc-is-clang && ! use custom-cflags && ! is_crosscompile ; then + + # If we are running in an otherwise clang/llvm environment, we need to + # recover the proper gcc and binutils settings here, at least until glibc + # is finally building with clang. So let's override everything that is + # set in the clang profiles. + # Want to shoot yourself into the foot? Set USE=custom-cflags, that's always + # a good start into that direction. + # Also, if you're crosscompiling, let's assume you know what you are doing. + # Hopefully. + + local current_binutils_path=$(binutils-config -B) + local current_gcc_path=$(gcc-config -B) + einfo "Overriding clang configuration, since it won't work here" + + export __ORIG_CC=${CC} + + export CC="${current_gcc_path}/gcc" + export CXX="${current_gcc_path}/g++" + export LD="${current_binutils_path}/ld.bfd" + export AR="${current_binutils_path}/ar" + export AS="${current_binutils_path}/as" + export NM="${current_binutils_path}/nm" + export STRIP="${current_binutils_path}/strip" + export RANLIB="${current_binutils_path}/ranlib" + export OBJCOPY="${current_binutils_path}/objcopy" + export STRINGS="${current_binutils_path}/strings" + export OBJDUMP="${current_binutils_path}/objdump" + export READELF="${current_binutils_path}/readelf" + export ADDR2LINE="${current_binutils_path}/addr2line" + + # do we need to also do flags munging here? yes! at least... + filter-flags '-fuse-ld=*' + filter-flags '-D_FORTIFY_SOURCE=*' + + else + + # this is the "normal" case + + export __ORIG_CC=${CC} + + export CC="$(tc-getCC ${CTARGET})" + export CXX="$(tc-getCXX ${CTARGET})" + + # Always use tuple-prefixed toolchain. For non-native ABI glibc's configure + # can't detect them automatically due to ${CHOST} mismatch and fallbacks + # to unprefixed tools. Similar to multilib.eclass:multilib_toolchain_setup(). + export NM="$(tc-getNM ${CTARGET})" + export READELF="$(tc-getREADELF ${CTARGET})" + + fi + # We need to export CFLAGS with abi information in them because glibc's # configure script checks CFLAGS for some targets (like mips). Keep # around the original clean value to avoid appending multiple ABIs on - # top of each other. - : ${__GLIBC_CC:=$(tc-getCC ${CTARGET})} - export __GLIBC_CC CC="${__GLIBC_CC} ${!VAR}" - einfo " $(printf '%15s' 'Manual CC:') ${CC}" + # top of each other. (Why does the comment talk about CFLAGS if the code + # acts on CC?) + export __GLIBC_CC=${CC} + export __GLIBC_CXX=${CXX} + + export __abi_CFLAGS="$(get_abi_CFLAGS)" + + # CFLAGS can contain ABI-specific flags like -mfpu=neon, see bug #657760 + # To build .S (assembly) files with the same ABI-specific flags + # upstream currently recommends adding CFLAGS to CC/CXX: + # https://sourceware.org/PR23273 + # Note: Passing CFLAGS via CPPFLAGS overrides glibc's arch-specific CFLAGS + # and breaks multiarch support. See 659030#c3 for an example. + # The glibc configure script doesn't properly use LDFLAGS all the time. + export CC="${__GLIBC_CC} ${__abi_CFLAGS} ${LDFLAGS}" + + # Some of the tests are written in C++, so we need to force our multlib abis in, bug 623548 + export CXX="${__GLIBC_CXX} ${__abi_CFLAGS}" + + if is_crosscompile; then + # Assume worst-case bootstrap: glibc is buil first time + # when ${CTARGET}-g++ is not available yet. We avoid + # building auxiliary programs that require C++: bug #683074 + # It should not affect final result. + export libc_cv_cxx_link_ok=no + # The line above has the same effect. We set CXX explicitly + # to make build logs less confusing. + export CXX= + fi } foreach_abi() { @@ -812,86 +902,13 @@ src_prepare() { } glibc_do_configure() { - # Glibc does not work with gold (for various reasons) #269274. - tc-ld-disable-gold - - # CXX isnt handled by the multilib system, so if we dont unset here - # we accumulate crap across abis - unset CXX - - # If we are running in an otherwise clang/llvm environment, we need to - # recover the proper gcc and binutils settings here, at least until glibc - # is finally building with clang. So let's override everything that is - # set in the clang profiles. - # Want to shoot yourself into the foot? Set USE=custom-cflags, that's always - # a good start into that direction. - if tc-is-clang && ! use custom-cflags ; then - local current_binutils_path=$(binutils-config -B) - local current_gcc_path=$(gcc-config -B) - einfo "Overriding clang configuration, since it won't work here" - - export CC="${current_gcc_path}/gcc" - export LD="${current_binutils_path}/ld.bfd" - export AR="${current_binutils_path}/ar" - export AS="${current_binutils_path}/as" - export NM="${current_binutils_path}/nm" - export STRIP="${current_binutils_path}/strip" - export RANLIB="${current_binutils_path}/ranlib" - export OBJCOPY="${current_binutils_path}/objcopy" - export STRINGS="${current_binutils_path}/strings" - export OBJDUMP="${current_binutils_path}/objdump" - export READELF="${current_binutils_path}/readelf" - export ADDR2LINE="${current_binutils_path}/addr2line" - - # do we need to also do flags munging here? - fi - - if use doc ; then - export MAKEINFO=makeinfo - else - export MAKEINFO=/dev/null - fi local v - for v in ABI CBUILD CHOST CTARGET CBUILD_OPT CTARGET_OPT CC CXX LD {AS,C,CPP,CXX,LD}FLAGS MAKEINFO NM READELF; do + for v in ABI CBUILD CHOST CTARGET CBUILD_OPT CTARGET_OPT CC CXX LD {AS,C,CPP,CXX,LD}FLAGS MAKEINFO NM AR AS STRIP RANLIB OBJCOPY STRINGS OBJDUMP READELF; do einfo " $(printf '%15s' ${v}:) ${!v}" done - # CFLAGS can contain ABI-specific flags like -mfpu=neon, see bug #657760 - # To build .S (assembly) files with the same ABI-specific flags - # upstream currently recommends adding CFLAGS to CC/CXX: - # https://sourceware.org/PR23273 - # Note: Passing CFLAGS via CPPFLAGS overrides glibc's arch-specific CFLAGS - # and breaks multiarch support. See 659030#c3 for an example. - # The glibc configure script doesn't properly use LDFLAGS all the time. - export CC="$(tc-getCC ${CTARGET}) ${CFLAGS} ${LDFLAGS}" - einfo " $(printf '%15s' 'Manual CC:') ${CC}" - - # Some of the tests are written in C++, so we need to force our multlib abis in, bug 623548 - export CXX="$(tc-getCXX ${CTARGET}) $(get_abi_CFLAGS) ${CFLAGS}" - - if is_crosscompile; then - # Assume worst-case bootstrap: glibc is buil first time - # when ${CTARGET}-g++ is not available yet. We avoid - # building auxiliary programs that require C++: bug #683074 - # It should not affect final result. - export libc_cv_cxx_link_ok=no - # The line above has the same effect. We set CXX explicitly - # to make build logs less confusing. - export CXX= - fi - einfo " $(printf '%15s' 'Manual CXX:') ${CXX}" - - # Always use tuple-prefixed toolchain. For non-native ABI glibc's configure - # can't detect them automatically due to ${CHOST} mismatch and fallbacks - # to unprefixed tools. Similar to multilib.eclass:multilib_toolchain_setup(). - export NM="$(tc-getNM ${CTARGET})" - export READELF="$(tc-getREADELF ${CTARGET})" - einfo " $(printf '%15s' 'Manual NM:') ${NM}" - einfo " $(printf '%15s' 'Manual READELF:') ${READELF}" - echo - local myconf=() case ${CTARGET} in -- cgit v1.2.3-65-gdbad