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Too many fixes need backporting for GCC8...

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... so instead, disable -Werror for older versions of glibc.

Signed-off-by: Alexey Neyman <stilor@att.net>
This commit is contained in:
Alexey Neyman 2018-05-14 23:47:17 -07:00
parent 2b055ddc67
commit 37ac0e8474
3 changed files with 14 additions and 14 deletions
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18
config/libc/glibc.in
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@ -112,12 +112,6 @@ config GLIBC_HAS_OBSOLETE_RPC
def_bool y
depends on GLIBC_2_14_or_later
# New GCC versions don't like the ifunc implementation in GCC, producing a warning.
# We can either require old GCC for those versions, or disable erroring out on warnings.
config GLIBC_HAS_NEW_IFUNC
def_bool y
depends on GLIBC_2_25_or_later
config GLIBC_EXTRA_CONFIG_ARRAY
string
prompt "extra config"
@ -326,4 +320,16 @@ config GLIBC_MIN_KERNEL
default LINUX_VERSION if GLIBC_KERNEL_VERSION_AS_HEADERS
default GLIBC_MIN_KERNEL_VERSION if GLIBC_KERNEL_VERSION_CHOSEN
# All supported versions of glibc build cleanly with GCC7 and earlier.
# GCC8-related fixes were only available in glibc 2.27.
config GLIBC_ENABLE_WERROR
bool "Enable -Werror during the build"
default y if GCC_7_or_older
default y if GCC_8_or_later && GLIBC_2_27_or_later
help
By default, glibc enables strict warning checks during the build.
However, older version of glibc may not build with newer versions
of the compiler than there were available at the time of a glibc
release (because newer compilers typically have better diagnostics).
endif # KERNEL_LINUX

2
packages/glibc/package.desc
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@ -1,6 +1,6 @@
origin='GNU'
repository='git git://sourceware.org/git/glibc.git'
mirrors='$(CT_Mirrors GNU glibc)'
milestones='2.14 2.17 2.20 2.23 2.24 2.25 2.26'
milestones='2.14 2.17 2.20 2.23 2.24 2.26 2.27'
archive_formats='.tar.xz .tar.bz2 .tar.gz'
signature_format='packed/.sig'

8
scripts/build/libc/glibc.sh
View File

@ -171,6 +171,7 @@ do_libc_backend_once() {
*) extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
esac
[ "${CT_GLIBC_ENABLE_WERROR}" != "y" ] && extra_config+=("--disable-werror")
[ -n "${CT_PKGVERSION}" ] && extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
[ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
@ -200,13 +201,6 @@ do_libc_backend_once() {
glibc_cflags+=" ${CT_GLIBC_EXTRA_CFLAGS}"
glibc_cflags+=" ${multi_flags}"
# Before 2.25, glibc didn't use GCC's ifunc attribute, instead creating
# the resolvers through some clever assembly. This had the resolver function
# aliased with an incompatible type, and GCC8 now complains about it.
if [ "${CT_GLIBC_HAS_NEW_IFUNC}" != "y" ]; then
glibc_cflags+=" -Wno-error=attribute-alias"
fi
# Analyze the resulting options for any extra configure switches to throw in.
for opt in ${glibc_cflags}; do
case ${opt} in