scripts/trylink: remove $CPPFLAGS

We don't use it in final link, should not use it in check_FOO then.
This uncovered a logic bug in glibc check...

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/scripts/trylink b/scripts/trylink
index 26099976a89d9c52f443e490bcfc384e62e7bd1d..9132b3f7608985d47c152883453ffab498b47a8f 100755 (executable)
--- a/scripts/trylink
+++ b/scripts/trylink
@@ -51,10 +51,10 @@ check_cc() {
     echo "int main(int argc,char**argv){return argv?argc:0;}" >"$tempname".c
     # Can use "-o /dev/null", but older gcc tend to *unlink it* on failure! :(
     # Was using "-xc /dev/null", but we need a valid C program.
-    # "eval" is needed because CFLAGS can contain
+    # "eval" may be needed is CFLAGS can contain
     # '... -D"BB_VER=KBUILD_STR(1.N.M)" ...'
     # and we need shell to process quotes!
-    eval $CC $CPPFLAGS $CFLAGS $1 "$tempname".c -o "$tempname" >/dev/null 2>&1
+    $CC $CFLAGS $1 "$tempname".c -o "$tempname" >/dev/null 2>&1
     r=$?
     rm -f "$tempname" "$tempname".c "$tempname".o
     return $r
@@ -70,7 +70,7 @@ check_libc_is_glibc() {
        syntax error here
        #endif
        " >"$tempname".c
-    $CC $CPPFLAGS $CFLAGS "$tempname".c -c -o "$tempname".o >/dev/null 2>&1
+    ! $CC $CFLAGS "$tempname".c -c -o "$tempname".o >/dev/null 2>&1
     r=$?
     rm -f "$tempname" "$tempname".c "$tempname".o
     return $r