https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797
--- Comment #5 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> --- I've also found one case where the error is slightly different (also "make -j4"): make "AR_FLAGS=rc" "CC_FOR_BUILD=clang" "CC_FOR_TARGET=/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/./gcc/xgcc -B/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/./gcc/" "CFLAGS=-g -O2 -m32" "CXXFLAGS=-g -O2 -m32" "CFLAGS_FOR_BUILD=-g -O2" "CFLAGS_FOR_TARGET=-g -O2" "INSTALL=/usr/bin/install -c" "INSTALL_DATA=/usr/bin/install -c -m 644" "INSTALL_PROGRAM=/usr/bin/install -c" "INSTALL_SCRIPT=/usr/bin/install -c" "LDFLAGS=-m32" "LIBCFLAGS=-g -O2 -m32" "LIBCFLAGS_FOR_TARGET=-g -O2" "MAKE=make" "MAKEINFO=makeinfo --split-size=5000000 --split-size=5000000 --split-size=5000000 " "SHELL=/bin/sh" "RUNTESTFLAGS=" "exec_prefix=/usr/local/Cellar/gcc/7.1.0" "infodir=/usr/local/Cellar/gcc/7.1.0/share/info" "libdir=/usr/local/Cellar/gcc/7.1.0/lib/gcc/7" "includedir=/usr/local/Cellar/gcc/7.1.0/include" "prefix=/usr/local/Cellar/gcc/7.1.0" "tooldir=/usr/local/Cellar/gcc/7.1.0/x86_64-apple-darwin17.0.0" "gxx_include_dir=/usr/local/Cellar/gcc/7.1.0/include/c++/7.1.0" "AR=ar" "AS=/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/./gcc/as" "LD=/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/./gcc/collect-ld" "RANLIB=ranlib" "NM=/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/./gcc/nm" "NM_FOR_BUILD=" "NM_FOR_TARGET=nm" "DESTDIR=" "WERROR=" all-recursive Making all in include mkdir -p ./x86_64-apple-darwin17.0.0/bits/stdc++.h.gch mkdir -p ./x86_64-apple-darwin17.0.0/bits/stdc++.h.gch /private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/./gcc/xgcc -shared-libgcc -B/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/./gcc -nostdinc++ -L/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/src -L/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/src/.libs -L/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/libsupc++/.libs -B/usr/local/Cellar/gcc/7.1.0/x86_64-apple-darwin17.0.0/bin/ -B/usr/local/Cellar/gcc/7.1.0/x86_64-apple-darwin17.0.0/lib/ -isystem /usr/local/Cellar/gcc/7.1.0/x86_64-apple-darwin17.0.0/include -isystem /usr/local/Cellar/gcc/7.1.0/x86_64-apple-darwin17.0.0/sys-include -m32 -x c++-header -nostdinc++ -g -O2 -m32 -I/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/include/x86_64-apple-darwin17.0.0 -I/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/include -I/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/libstdc++-v3/libsupc++ -O2 -g -std=gnu++0x /private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/libstdc++-v3/include/precompiled/stdc++.h \ -o x86_64-apple-darwin17.0.0/bits/stdc++.h.gch/O2ggnu++0x.gch /private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/./gcc/xgcc -shared-libgcc -B/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/./gcc -nostdinc++ -L/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/src -L/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/src/.libs -L/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/libsupc++/.libs -B/usr/local/Cellar/gcc/7.1.0/x86_64-apple-darwin17.0.0/bin/ -B/usr/local/Cellar/gcc/7.1.0/x86_64-apple-darwin17.0.0/lib/ -isystem /usr/local/Cellar/gcc/7.1.0/x86_64-apple-darwin17.0.0/include -isystem /usr/local/Cellar/gcc/7.1.0/x86_64-apple-darwin17.0.0/sys-include -m32 -x c++-header -nostdinc++ -g -O2 -m32 -I/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/include/x86_64-apple-darwin17.0.0 -I/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/build/x86_64-apple-darwin17.0.0/i386/libstdc++-v3/include -I/private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/libstdc++-v3/libsupc++ -O2 -g /private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/libstdc++-v3/include/precompiled/stdc++.h -o x86_64-apple-darwin17.0.0/bits/stdc++.h.gch/O2g.gch /private/tmp/gcc-20170813-56216-v7ncm/gcc-7.1.0/libstdc++-v3/include/precompiled/stdc++.h:56:10: fatal error: cstdbool: No such file or directory #include <cstdbool> ^~~~~~~~~~ compilation terminated. make[9]: *** [x86_64-apple-darwin17.0.0/bits/stdc++.h.gch/O2g.gch] Error 1 After make aborts, the contents of the include folders in that build are: bash-3.2$ ls x86_64-apple-darwin17.0.0/i386/libstdc++-v3/include/ Makefile complex experimental numeric stamp-debug string algorithm complex.h ext optional stamp-decimal string_view any condition_variable fenv.h ostream stamp-dual-abi system_error array csetjmp forward_list parallel stamp-experimental tgmath.h atomic csignal fstream profile stamp-experimental-bits thread backward cstdalign functional queue stamp-ext tr1 bits cstdarg future random stamp-extern-template tr2 bitset cstdbool gstdint.h ratio stamp-host tuple cassert cstddef iomanip regex stamp-namespace-version type_traits ccomplex cstdint ios scoped_allocator stamp-parallel typeindex cctype cstdio iosfwd set stamp-pb unordered_map cerrno cstdlib iostream shared_mutex stamp-profile unordered_set cfenv cstring istream sstream stamp-profile-impl utility cfloat ctgmath iterator stack stamp-std valarray chrono ctime limits stamp-allocator-new stamp-tr1 variant cinttypes cuchar list stamp-backward stamp-tr2 vector ciso646 cwchar locale stamp-bits stamp-visibility x86_64-apple-darwin17.0.0 climits cwctype map stamp-bits-sup stamp-x86_64-apple-darwin17.0.0 clocale debug math.h stamp-c_base stdexcept cmath decimal memory stamp-c_compatibility stdlib.h codecvt deque mutex stamp-cxx11-abi streambuf bash-3.2$ ls x86_64-apple-darwin17.0.0/libstdc++-v3/include Makefile complex experimental numeric stamp-debug string algorithm complex.h ext optional stamp-decimal string_view any condition_variable fenv.h ostream stamp-dual-abi system_error array csetjmp forward_list parallel stamp-experimental tgmath.h atomic csignal fstream profile stamp-experimental-bits thread backward cstdalign functional queue stamp-ext tr1 bits cstdarg future random stamp-extern-template tr2 bitset cstdbool gstdint.h ratio stamp-host tuple cassert cstddef iomanip regex stamp-namespace-version type_traits ccomplex cstdint ios scoped_allocator stamp-parallel typeindex cctype cstdio iosfwd set stamp-pb unordered_map cerrno cstdlib iostream shared_mutex stamp-profile unordered_set cfenv cstring istream sstream stamp-profile-impl utility cfloat ctgmath iterator stack stamp-std valarray chrono ctime limits stamp-allocator-new stamp-tr1 variant cinttypes cuchar list stamp-backward stamp-tr2 vector ciso646 cwchar locale stamp-bits stamp-visibility x86_64-apple-darwin17.0.0 climits cwctype map stamp-bits-sup stamp-x86_64-apple-darwin17.0.0 clocale debug math.h stamp-c_base stdexcept cmath decimal memory stamp-c_compatibility stdlib.h codecvt deque mutex stamp-cxx11-abi streambuf I am not sure what other information I can pass on…