new: clear CFLAGS in gcc and glibc

lfs/glibc-2.41.PKGBUILD

@@ -26,6 +26,9 @@ src_prepare() {
 }
 
 src_build() {
+  old_cflags="$CFLAGS"
+  unset CFLAGS
+
   mkdir -pv build
   cd build
   echo "rootsbindir=/usr/sbin" > configparms
@@ -36,6 +39,8 @@ src_build() {
                --disable-nscd                           \
                libc_cv_slibdir=/usr/lib
   make
+
+  export CFLAGS="$old_cflags"
 }
 
 _skip_test() {
@@ -46,10 +51,16 @@ _skip_test() {
 
 src_check() {
   _skip_test tst-lchmod io/Makefile
+
+  old_cflags="$CFLAGS"
+  unset CFLAGS
   make check
+  export CFLAGS="$old_cflags"
 }
 
 src_install() {
+  old_cflags="$CFLAGS"
+  unset CFLAGS
   cd "${srcdir}/build"
   install -d "${pkgdir}/etc"
   touch "${pkgdir}/etc/ld.so.conf"
@@ -110,6 +121,8 @@ src_install() {
   unset ZONEINFO
 
   install -m644 "${distdir}/${sources[3]}" "${pkgdir}/etc/ld.so.conf"
+
+  export CFLAGS="$old_cflags"
 }
 
 src_preinstall() {