gcc   -g -fkeep-inline-functions -DIN_GCC   -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition -Wc++-compat -fno-common  -DHAVE_CONFIG_H  -o lto1 \
    lto/lto-lang.o lto/lto.o lto/lto-object.o attribs.o main.o tree-browser.o libbackend.a libcommon-target.a libcommon.a ../libcpp/libcpp.a ../libdecnumber/libdecnumber.a   -L/tmp/nix-build-gcc-4.7.3.drv-0/build/./gmp/.libs -L/tmp/nix-build-gcc-4.7.3.drv-0/build/./mpfr/src/.libs -L/tmp/nix-build-gcc-4.7.3.drv-0/build/./mpc/src/.libs -lmpc -lmpfr -lgmp -rdynamic -ldl  -L../zlib -lz libcommon.a ../libcpp/libcpp.a   ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a
collect2: error: ld returned 1 exit status
make[3]: *** [lto1] Error 1
make[3]: Leaving directory `/tmp/nix-build-gcc-4.7.3.drv-0/build/gcc'
make[2]: *** [all-stage1-gcc] Error 2
make[2]: Leaving directory `/tmp/nix-build-gcc-4.7.3.drv-0/build'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/tmp/nix-build-gcc-4.7.3.drv-0/build'
make: *** [all] Error 2
phase `build' failed after 1088 seconds
builder for `/nix/store/8nx4cjfapi0qr385f5f3an0j32jsrzah-gcc-4.7.3.drv' failed with exit code 1
@ build-failed /nix/store/8nx4cjfapi0qr385f5f3an0j32jsrzah-gcc-4.7.3.drv - 1 builder for `/nix/store/8nx4cjfapi0qr385f5f3an0j32jsrzah-gcc-4.7.3.drv' failed with exit code 1
cannot build derivation `/nix/store/bgf493lw4ag13is74zmsdff7n0a7w9m8-guile-2.0.9.drv': 1 dependencies couldn't be built
cannot build derivation `/nix/store/bc6hgclkr7a3yq3xh7h6m7myagfdwvdj-hello-2.8.drv': 1 dependencies couldn't be built
guix package: error: build failed: build of `/nix/store/bc6hgclkr7a3yq3xh7h6m7myagfdwvdj-hello-2.8.drv' failed
1356 operations