scripts/ext-toolchain: implement external GCC version detection

[openwrt/staging/hauke.git] / scripts / ext-toolchain.sh

diff --git a/scripts/ext-toolchain.sh b/scripts/ext-toolchain.sh
index fe1024c18ec800a903a32aa64471065385032768..1fa2e952bb792eea53082f1b457b5bfc62f4948b 100755 (executable)
--- a/scripts/ext-toolchain.sh
+++ b/scripts/ext-toolchain.sh
@@ -27,6 +27,7 @@ CFLAGS=""
 TOOLCHAIN="."
 
 LIBC_TYPE=""
+GCC_VERSION=""
 
 
 # Library specs
@@ -199,6 +200,19 @@ find_bins() {
        return 1
 }
 
+find_gcc_version() {
+       if [ -f $TOOLCHAIN/info.mk ]; then
+               GCC_VERSION=$(grep GCC_VERSION $TOOLCHAIN/info.mk | sed 's/GCC_VERSION=//')
+               return 0
+       fi
+
+       echo "Warning! Can't find info.mk, trying to detect with alternative way."
+
+       # Very fragile detection
+       GCC_VERSION=$(find $TOOLCHAIN/bin | grep -oE "gcc-[0-9]+\.[0-9]+\.[0-9]+$" | \
+               head -1 | sed 's/gcc-//')
+}
+
 
 wrap_bin_cc() {
        local out="$1"
@@ -383,6 +397,13 @@ print_config() {
                return 1
        fi
 
+       if [ -n "$GCC_VERSION" ]; then
+               echo "CONFIG_EXTERNAL_GCC_VERSION=\"$GCC_VERSION\"" >> "$config"
+       else
+               echo "Can't detect GCC version. Aborting!" >&2
+               return 1
+       fi
+
        local lib
        for lib in C RT PTHREAD GCC STDCPP SSP GFORTRAN GOMP; do
                local file
@@ -564,6 +585,7 @@ while [ -n "$1" ]; do
                --config)
                        if probe_cc; then
                                probe_libc
+                               find_gcc_version
                                print_config "$1"
                                exit $?
                        fi