diff --git a/add-sw_64-support.patch b/add-sw_64-support.patch
index d67b65f41b1e1bd18e8f9688b61f55aa6c60fddc..4fc92ac1f12989973f8632b2b406283b6e93eed5 100644
--- a/add-sw_64-support.patch
+++ b/add-sw_64-support.patch
@@ -7,7 +7,7 @@ diff -auNr firefox-102.9.0/build/autoconf/config.guess firefox-102.9.0.sw/build/
  	;;
 +    sw_64*:Linux:*:*)
 +	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-+	exit ;;
++	;;
      tile*:Linux:*:*)
  	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
  	;;
@@ -156,7 +156,7 @@ diff -auNr firefox-102.9.0/modules/freetype2/builds/unix/config.guess firefox-10
  	;;
 +    sw_64*:Linux:*:*)
 +        GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-+        exit ;;
++        ;;
      tile*:Linux:*:*)
  	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
  	;;
diff --git a/mozjs102.spec b/mozjs102.spec
index 1540a9d8e2e4e0cd216e2d2ed517c0661880a7e7..7a8ca31aff848178700dfa7b7c12f04d9548a753 100644
--- a/mozjs102.spec
+++ b/mozjs102.spec
@@ -23,7 +23,7 @@
 
 Name:           mozjs%{major}
 Version:        102.9.0
-Release:        8
+Release:        9
 Summary:        SpiderMonkey JavaScript library
 License:        MPL-2.0 AND Apache-2.0 AND BSD-3-Clause AND BSD-2-Clause AND MIT AND GPL-3.0-or-later
 URL:            https://hg.mozilla.org/releases/mozilla-esr102
@@ -139,9 +139,12 @@ export CARGO_PROFILE_RELEASE_LTO=true
 %endif
 
 # Use bundled autoconf
+export CC="%{__cc}"
+export CXX="%{__cxx}"
 export M4=m4
 export AWK=awk
 export AC_MACRODIR=%{_builddir}/firefox-%{version}/build/autoconf/
+export CC_TYPE="%{?toolchain}%{!?toolchain:gcc}"
 
 sh ../../build/autoconf/autoconf.sh --localdir=%{_builddir}/firefox-%{version}/js/src configure.in > configure
 chmod +x configure
@@ -252,6 +255,10 @@ ln -s libmozjs-%{major}.so.0 %{buildroot}%{_libdir}/libmozjs-%{major}.so
 %{_includedir}/mozjs-%{major}/
 
 %changelog
+* Mon Jun 23 2025 Funda Wang <fundawang@yeah.net> - 102.9.0-9
+- set CC and CXX so that clang won't be selected automatically
+- fix compilation errors in sw_64 support
+
 * Tue Mar 11 2025 Funda Wang <fundawang@yeah.net> - 102.9.0-8
 - fix build with icu 76