-fopenmp fails when gcc is compiled to /usr/local

Using gcc-4.7.2 compiled to /usr/local The following fails: echo "int main(){}" > hello.c gcc hello.c -fopenmp ..with a message that libgomp.spec cannot be found editing the output of gcc -dumpspecs: include(libgomp.spec) -> include(/usr/local/lib/libgomp.spec) include(libitm.spec) -> include(

compiling with "-flto -fuse-linker-plugin" gives libtool error

Compiling some packages with "-flto -fuse-linker-plugin" gives a libtool error during "make". Compiling the same package without "-flto -fuse-linker-plugin" allows "make" to complete without errors. Using gcc-4.9.1/binutils-2.24.51 or gcc-5.2.0/binutils-2.25.1 The problem seems to occur with a fe