crossgcc/buildgcc: add parameter to show version number of tool

By adding the version number of tools, we can help people keep up to
date with their tool versions.  This will be used now to determine
whether the IASL version being used is the version supported by
coreboot.

Change-Id: I24a68b01c819871f90403869570125e71b96bd70
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12545
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

util/crossgcc/buildgcc

@@ -18,8 +18,8 @@
 
 cd $(dirname $0)
 
-CROSSGCC_DATE="July 17th, 2015"
+CROSSGCC_DATE="November 25th, 2015"
-CROSSGCC_VERSION="1.32"
+CROSSGCC_VERSION="1.33"
 
 # default settings
 PACKAGE=GCC
@@ -307,6 +307,7 @@ myhelp()
 	printf "    [-t|--savetemps]              don't remove temporary files after build\n"
 	printf "    [-y|--ccache]                 Use ccache when building cross compiler\n"
 	printf "    [-j|--jobs <num>]             run <num> jobs in parallel in make\n"
+	printf "    [-s]--supported <tool>        print supported version of a tool"
 	printf "    [-d|--directory <target dir>] target directory to install cross compiler to\n"
 	printf "                                  (defaults to $TARGETDIR)\n\n"
 	printf "    [-D|--destdir <dest dir>]     destination directory to install cross compiler to\n"
@@ -326,9 +327,13 @@ myhelp()
 	printf "    x86_64 i386-elf i386-mingw32 mipsel-elf riscv-elf arm aarch64\n\n"
 }
 
+printversion() {
+	printf "${blue}Welcome to the ${red}coreboot${blue} cross toolchain builder v$CROSSGCC_VERSION ($CROSSGCC_DATE)${NC}\n\n"
+}
+
 myversion()
 {
-	# version tag is always printed, so just print the license here
+	printversion
 
 	cat << EOF
 Copyright (C) 2008-2010 by coresystems GmbH
@@ -511,7 +516,23 @@ build_LLVM() {
 	done
 }
 
-printf "${blue}Welcome to the ${red}coreboot${blue} cross toolchain builder v$CROSSGCC_VERSION ($CROSSGCC_DATE)${NC}\n\n"
+print_stable() {
+	case "$PRINTSTABLE" in
+		AUTOCONF|autoconf)  printf "%s\n" "$GCC_AUTOCONF_VERSION";;
+		BINUTILS|binutils)  printf "%s\n" "$BINUTILS_VERSION";;
+		CLANG|clang)  printf "%s\n" "$CLANG_VERSION";;
+		EXPAT|expat)  printf "%s\n" "$EXPAT_VERSION";;
+		GCC|gcc)  printf "%s\n" "$GCC_VERSION";;
+		GDB|gdb)  printf "%s\n" "$GDB_VERSION";;
+		GMP|gmp)   printf "%s\n" "$GMP_VERSION";;
+		IASL|iasl) printf "%s\n" "$IASL_VERSION";;
+		LIBELF|libelf)  printf "%s\n" "$LIBELF_VERSION";;
+		MPC|mpc)  printf "%s\n" "$MPC_VERSION";;
+		MPFR|mpfr)  printf "%s\n" "$MPFR_VERSION";;
+		PYTHON|python)  printf "%s\n" "$PYTHON_VERSION";;
+		*) printf "Unknown tool %s\n" "$PRINTSTABLE";;
+	esac
+}
 
 # Look if we have getopt. If not, build it.
 export PATH=$PATH:.
@@ -521,11 +542,11 @@ getopt - > /dev/null 2>/dev/null || gcc -o getopt getopt.c
 getoptbrand="$(getopt -V | sed -e '1!d' -e 's,^\(......\).*,\1,')"
 if [ "${getoptbrand}" = "getopt" ]; then
 	# Detected GNU getopt that supports long options.
-	args=$(getopt -l version,help,clean,directory:,platform:,languages:,package:,jobs:,destdir:,savetemps,scripting,ccache Vhcd:p:l:P:j:D:tSy -- "$@")
+	args=$(getopt -l version,help,clean,directory:,platform:,languages:,package:,jobs:,destdir:,savetemps,scripting,ccache,supported: Vhcd:p:l:P:j:D:tSys: -- "$@")
 	eval set "$args"
 else
 	# Detected non-GNU getopt
-	args=$(getopt Vhcd:p:l:P:j:D:tSy $*)
+	args=$(getopt Vhcd:p:l:P:j:D:tSys: $*)
 	set -- $args
 fi
 
@@ -548,12 +569,21 @@ while true ; do
 		-P|--package)   shift; PACKAGE="$1"; shift;;
 		-S|--scripting) shift; SKIPPYTHON=0;;
 		-y|--ccache)	shift; USECCACHE=1;;
+		-s|--supported) shift; PRINTSTABLE="$1"; shift;;
 		--)		shift; break;;
 		-*)		printf "Invalid option\n\n"; myhelp; exit 1;;
 		*)		break;;
 	esac
 done
 
+if [ -n "$PRINTSTABLE" ]; then
+	print_stable
+	exit 0
+fi
+
+#print toolchain builder version string as the header
+printversion
+
 case "$TARGETARCH" in
 	x86_64-elf)	;;
 	x86_64*)	TARGETARCH=x86_64-elf;;