multi_cc: Prepare ct-ng for multiple compilers

This commit moves gcc.sh to 100-gcc.sh to accomodate for other
cross-compilers that crosstool-ng might be able to build.

The first, to come soon, is llvm/clang.

Signed-off-by: Ray Donnelly <mingw.android@gmail.com>
Reviewed-by: Bryan Hundven <bryanhundven@gmail.com>
Reviewed-by: Yann Diorcet <diorcetyann@gmail.com>

scripts/build/cc.sh

@@ -0,0 +1,58 @@
+# Wrapper to build the companion tools facilities
+
+# List all companion tools facilities, and parse their scripts
+CT_CC_FACILITY_LIST=
+for f in "${CT_LIB_DIR}/scripts/build/cc/"*.sh; do
+    _f="$(basename "${f}" .sh)"
+    _f="${_f#???-}"
+    __f="CT_CC_${_f}"
+    if [ "${!__f}" = "y" ]; then
+        CT_DoLog DEBUG "Enabling cc '${_f}'"
+        . "${f}"
+        CT_CC_FACILITY_LIST="${CT_CC_FACILITY_LIST} ${_f}"
+    else
+        CT_DoLog DEBUG "Disabling cc '${_f}'"
+    fi
+done
+
+# Download the cc facilities
+do_cc_get() {
+    for f in ${CT_CC_FACILITY_LIST}; do
+        do_${f}_get
+    done
+}
+
+# Extract and patch the cc facilities
+do_cc_extract() {
+    for f in ${CT_CC_FACILITY_LIST}; do
+        do_${f}_extract
+    done
+}
+
+# Core pass 1 the cc facilities
+do_cc_core_pass_1() {
+    for f in ${CT_CC_FACILITY_LIST}; do
+        do_${f}_core_pass_1
+    done
+}
+
+# Core pass 2 the cc facilities
+do_cc_core_pass_2() {
+	for f in ${CT_CC_FACILITY_LIST}; do
+        do_${f}_core_pass_2
+    done
+}
+
+# Build for build the cc facilities
+do_cc_for_build() {
+	for f in ${CT_CC_FACILITY_LIST}; do
+        do_${f}_for_build
+    done
+}
+
+# Build for host the cc facilities
+do_cc_for_host() {
+	for f in ${CT_CC_FACILITY_LIST}; do
+        do_${f}_for_host
+    done
+}

scripts/crosstool-NG.sh.in

@@ -143,7 +143,7 @@ CT_DoLog INFO "Building environment variables"
 . "${CT_LIB_DIR}/scripts/build/companion_libs.sh"
 . "${CT_LIB_DIR}/scripts/build/binutils/${CT_BINUTILS}.sh"
 . "${CT_LIB_DIR}/scripts/build/libc/${CT_LIBC}.sh"
-. "${CT_LIB_DIR}/scripts/build/cc/${CT_CC}.sh"
+. "${CT_LIB_DIR}/scripts/build/cc.sh"
 . "${CT_LIB_DIR}/scripts/build/debug.sh"
 . "${CT_LIB_DIR}/scripts/build/test_suite.sh"