This is from the errorlog: checking whether the target supports thread-local storage... yes checking if the type of bitfields matters... yes checking for bdw garbage collector... checking for system boehm-gc... configure: error: system bdw-gc required but not found /bin/bash ./libtool --tag=CC --mode=compile /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/build/./gcc/xgcc -B/var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/build/./gcc/ -B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/lib/ -isystem /usr/x86_64-pc-linux-gnu/include -isystem /usr/x86_64-pc-linux-gnu/sys-include -DHAVE_CONFIG_H -I. -I/var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace -I /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace/../include -I /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace/../libgcc -I ../libgcc -funwind-tables -frandom-seed=fileline.lo -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual -Werror -g -O2 -pipe -mno-tls-direct-seg-refs -m32 -c -o fileline.lo /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace/fileline.c libtool: compile: /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/build/./gcc/xgcc -B/var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/build/./gcc/ -B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/lib/ -isystem /usr/x86_64-pc-linux-gnu/include -isystem /usr/x86_64-pc-linux-gnu/sys-include -DHAVE_CONFIG_H -I. -I/var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace -I /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace/../include -I /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace/../libgcc -I ../libgcc -funwind-tables -frandom-seed=fileline.lo -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual -Werror -g -O2 -pipe -mno-tls-direct-seg-refs -m32 -c /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace/fileline.c -fPIC -DPIC -o .libs/fileline.o libtool: compile: /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/build/./gcc/xgcc -B/var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/build/./gcc/ -B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/lib/ -isystem /usr/x86_64-pc-linux-gnu/include -isystem /usr/x86_64-pc-linux-gnu/sys-include -DHAVE_CONFIG_H -I. -I/var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace -I /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace/../include -I /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace/../libgcc -I ../libgcc -funwind-tables -frandom-seed=fileline.lo -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual -Werror -g -O2 -pipe -mno-tls-direct-seg-refs -m32 -c /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/gcc-7.3.0/libbacktrace/fileline.c -o fileline.o >/dev/null 2>&1 make[1]: *** [Makefile:19699: configure-target-libobjc] Error 1 make[1]: *** Waiting for unfinished jobs.... /bin/bash ./libtool --tag=CC --mode=compile /var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/build/./gcc/xgcc -B/var/tmp/portage/sys-devel/gcc-7.3.0-r3/work/build/./gcc/ -B/usr/x86_64-pc This is present: # eix boehm-gc [I] dev-libs/boehm-gc Available versions: 7.2e 7.4.2 7.6.4 {cxx static-libs (+)threads ABI_MIPS="n32 n64 o32" ABI_PPC="32 64" ABI_S390="32 64" ABI_X86="32 64 x32"} Installed versions: 7.6.4(21:40:48 22-04-18)(cxx threads -static-libs ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="64 -32 -x32") Homepage: http://www.hboehm.info/gc/ https://github.com/ivmai/bdwgc/ Description: The Boehm-Demers-Weiser conservative garbage collector [U] sys-devel/gcc Available versions: (2.95.3) [M]~*2.95.3-r10^s (3.3.6) [M]~3.3.6-r1^s (3.4.6) [M]3.4.6-r2^s (4.0.4) [M]**4.0.4^s (4.1.2) [M]4.1.2^s (4.2.4) [M]~4.2.4-r1^s (4.3.6) [M]4.3.6-r1^s (4.4.7) [M]4.4.7^s (4.5.4) [M]4.5.4^s (4.6.4) [M]4.6.4^s (4.7.4) [M]4.7.4-r1^s (4.8.5) [M]4.8.5-r1^s (4.9.4) [M]4.9.4^s (5.4.0) [M]5.4.0-r4^s (6.4.0) 6.4.0-r1^s **6.4.0-r2^s (7.3.0) 7.3.0-r3^s (8.1.0) **8.1.0-r3^s {altivec awt boundschecking cilk +cxx d debug doc fixed-point +fortran gcj go graphite hardened jit libssp mpx mudflap multilib +nls nopie nossp +nptl objc objc++ objc-gc +openmp +pch pgo +pie regression-test +sanitize +ssp systemtap vanilla +vtv} Installed versions: 6.4.0-r1(6.4.0)^s(04:53:25 13-01-18)(cxx fortran go graphite multilib nls nptl objc objc++ objc-gc openmp pch pie sanitize ssp vtv -altivec -awt -cilk -debug -doc -fixed-point -gcj -hardened -jit -libssp -mpx -pgo -regression-test -vanilla) Homepage: https://gcc.gnu.org/ Description: The GNU Compiler Collection Might be related to bug #617788
*** This bug has been marked as a duplicate of bug 617788 ***
