https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67728
--- Comment #26 from Bernd Edlinger <bernd.edlinger at hotmail dot de> --- with unpatched trunk and mpfr-3.1.4 and mpc-1.0.3 in-tree I've got this in mpc/src/libmpc.la: dependency_libs=' -lmpfr /home/ed/gnu/gcc-build1/./gmp/.libs/libgmp.la -lm' and check-mpc fails to build this: libtool: link: /home/ed/gnu/gcc-build1/./prev-gcc/xgcc -B/home/ed/gnu/gcc-build1/./prev-gcc/ -B/home/ed/gnu/install1/x86_64-pc-linux-gnu/bin/ -B/home/ed/gnu/install1/x86_64-pc-linux-gnu/bin/ -B/home/ed/gnu/install1/x86_64-pc-linux-gnu/lib/ -isystem /home/ed/gnu/install1/x86_64-pc-linux-gnu/include -isystem /home/ed/gnu/install1/x86_64-pc-linux-gnu/sys-include -g -O2 -static-libstdc++ -static-libgcc -o tabs tabs.o ./.libs/libmpc-tests.a ../src/.libs/libmpc.a -lmpfr /home/ed/gnu/gcc-build1/./gmp/.libs/libgmp.a -lm /usr/bin/ld: cannot find -lmpfr and with the patch this line in mpc/src/libmpc.la changed to: dependency_libs=' /home/ed/gnu/gcc-build/./mpfr/.libs/libmpfr.la /home/ed/gnu/gcc-build/./gmp/.libs/libgmp.la' and the check-mpc succeeds on a plain x86_64-ubuntu14.04 with definitely no gmp or mpfr libs installed
