trylink: accomodate older versions of ld
authorvda <vda@69ca8d6d-28ef-0310-b511-8ec308f3f277>
Tue, 13 Nov 2007 17:36:12 +0000 (17:36 +0000)
committervda <vda@69ca8d6d-28ef-0310-b511-8ec308f3f277>
Tue, 13 Nov 2007 17:36:12 +0000 (17:36 +0000)
git-svn-id: svn://busybox.net/trunk/busybox@20417 69ca8d6d-28ef-0310-b511-8ec308f3f277

scripts/trylink

index 7fe262b..4fea6fe 100755 (executable)
@@ -46,6 +46,14 @@ try() {
     return $exitcode
 }
 
+check_cc() {
+    if $CC $1 -shared -o /dev/null -xc /dev/null > /dev/null 2>&1; then
+        echo "$1";
+    else
+        echo "$2";
+    fi
+}
+
 EXE="$1"
 CC="$2"
 LDFLAGS="$3"
@@ -53,6 +61,9 @@ O_FILES="$4"
 A_FILES="$5"
 LDLIBS="$6"
 
+# The -Wl,--sort-section option is not supported by older versions of ld
+SORT_SECTION=`check_cc "-Wl,--sort-section -Wl,alignment" ""`
+
 # Sanitize lib list (dups, extra spaces etc)
 LDLIBS=`echo "$LDLIBS" | xargs -n1 | sort | uniq | xargs`
 
@@ -64,7 +75,7 @@ test "x$l_list" != "x" && l_list="-Wl,--start-group $l_list -Wl,--end-group"
 try $CC $LDFLAGS \
        -o $EXE \
        -Wl,--sort-common \
-       -Wl,--sort-section -Wl,alignment \
+       $SORT_SECTION \
        -Wl,--gc-sections \
        -Wl,--start-group $O_FILES $A_FILES -Wl,--end-group \
        $l_list \
@@ -88,7 +99,7 @@ while test "$LDLIBS"; do
        try $CC $LDFLAGS \
                -o $EXE \
                -Wl,--sort-common \
-               -Wl,--sort-section -Wl,alignment \
+               $SORT_SECTION \
                -Wl,--gc-sections \
                -Wl,--start-group $O_FILES $A_FILES -Wl,--end-group \
                $l_list
@@ -117,7 +128,7 @@ if ! test -f busybox_ldscript; then
     try $CC $LDFLAGS \
            -o $EXE \
            -Wl,--sort-common \
-           -Wl,--sort-section -Wl,alignment \
+           $SORT_SECTION \
            -Wl,--gc-sections \
            -Wl,--start-group $O_FILES $A_FILES -Wl,--end-group \
            $l_list \
@@ -139,7 +150,7 @@ else
     try $CC $LDFLAGS \
            -o $EXE \
            -Wl,--sort-common \
-           -Wl,--sort-section -Wl,alignment \
+           $SORT_SECTION \
            -Wl,--gc-sections \
            -Wl,-T -Wl,busybox_ldscript \
            -Wl,--start-group $O_FILES $A_FILES -Wl,--end-group \
@@ -174,7 +185,7 @@ if test "$CONFIG_BUILD_LIBBUSYBOX" = y; then
            -Wl,-soname="libbusybox.so.$BB_VER" \
            -Wl,--undefined=lbb_main \
            -Wl,--sort-common \
-           -Wl,--sort-section -Wl,alignment \
+           $SORT_SECTION \
            -Wl,--start-group $A_FILES -Wl,--end-group \
            $l_list \
            -Wl,--warn-common \
@@ -195,7 +206,7 @@ if test "$CONFIG_FEATURE_SHARED_BUSYBOX" = y; then
     try $CC $LDFLAGS \
            -o $EXE \
            -Wl,--sort-common \
-           -Wl,--sort-section -Wl,alignment \
+           $SORT_SECTION \
            -Wl,--gc-sections \
            -Wl,--start-group $O_FILES -Wl,--end-group \
            -L"$sharedlib_dir" -lbusybox \
@@ -234,7 +245,7 @@ int main(int argc, char **argv)
        try $CC $LDFLAGS "$sharedlib_dir/applet.c" \
                -o $EXE \
                -Wl,--sort-common \
-               -Wl,--sort-section -Wl,alignment \
+               $SORT_SECTION \
                -Wl,--gc-sections \
                -L"$sharedlib_dir" -lbusybox \
                -Wl,--warn-common \