Fix bug #75941: Fix compile failure on Solaris with clang

Closes GH-7525.

Author: jdolecek-zz

NEWS

@@ -2,7 +2,9 @@ PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 ?? ??? ????, PHP 8.1.0RC4
 
-
+- Core:
+  . Fixed bug #75941 (Fix compile failure on Solaris with clang). (Jaromír
+    Doleček)
 
 30 Sep 2021, PHP 8.1.0RC3
 

configure.ac

@@ -224,9 +224,6 @@ AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],
 case $host_alias in
   *solaris*)
     CPPFLAGS="$CPPFLAGS -D_POSIX_PTHREAD_SEMANTICS"
-    if test "${enable_libgcc+set}" != "set" && test "$GCC" = "yes"; then
-      enable_libgcc=yes
-    fi
     ;;
   *dgux*)
     CPPFLAGS="$CPPFLAGS -D_BSD_TIMEOFDAY_FLAVOR"