Merge pull request #63 from andressbarajas/macos_sed_fix

Add GNU sed fallback for macOS to support GCC build

Author: fjtrujy

scripts/006-gcc-stage2.sh

@@ -42,11 +42,13 @@ OSVER=$(uname)
 if [ "$(uname -s)" = "Darwin" ]; then
   ## Check if using brew
   if command -v brew &> /dev/null; then
+    export PATH="$(brew --prefix gnu-sed)/libexec/gnubin:$PATH"
     TARG_XTRA_OPTS="--with-system-zlib --with-gmp=$(brew --prefix gmp) --with-mpfr=$(brew --prefix mpfr) --with-mpc=$(brew --prefix libmpc)"
   elif command -v port &> /dev/null; then
   ## Check if using MacPorts
     MACPORT_BASE=$(dirname `port -q contents gmp|grep gmp.h`|sed s#/include##g)
     echo Macport base is $MACPORT_BASE
+    alias sed='gsed'
     TARG_XTRA_OPTS="--with-system-zlib --with-gmp=$MACPORT_BASE --with-mpfr=$MACPORT_BASE --with-mpc=$MACPORT_BASE"
   fi
 fi