Move __alignof__ support check into main configure.ac.

configure.ac

@@ -491,6 +491,20 @@ PHP_CHECK_BUILTIN_CPU_INIT
 dnl Check __builtin_cpu_supports
 PHP_CHECK_BUILTIN_CPU_SUPPORTS
 
+dnl Check for __alignof__ support in the compiler
+AC_CACHE_CHECK(whether the compiler supports __alignof__, ac_cv_alignof_exists,[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+]],[[
+  int align = __alignof__(int);
+]])],[
+  ac_cv_alignof_exists=yes
+],[
+  ac_cv_alignof_exists=no
+])])
+if test "$ac_cv_alignof_exists" = "yes"; then
+  AC_DEFINE([HAVE_ALIGNOF], 1, [whether the compiler supports __alignof__])
+fi
+
 dnl Check for structure members.
 AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,[#include <time.h>])
 AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_rdev])

ext/standard/config.m4

@@ -260,23 +260,6 @@ dnl If one of them is missing, use our own implementation, portable code is then
 dnl
 dnl TODO This is currently always enabled
 if test "$ac_cv_crypt_blowfish" = "no" || test "$ac_cv_crypt_des" = "no" || test "$ac_cv_crypt_ext_des" = "no" || test "$ac_cv_crypt_md5" = "no" || test "$ac_cv_crypt_sha512" = "no" || test "$ac_cv_crypt_sha256" = "no" || test "$ac_cv_func_crypt_r" != "yes" || true; then
-
-  dnl
-  dnl Check for __alignof__ support in the compiler
-  dnl
-  AC_CACHE_CHECK(whether the compiler supports __alignof__, ac_cv_alignof_exists,[
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-  ]],[[
-    int align = __alignof__(int);
-  ]])],[
-    ac_cv_alignof_exists=yes
-  ],[
-    ac_cv_alignof_exists=no
-  ])])
-  if test "$ac_cv_alignof_exists" = "yes"; then
-    AC_DEFINE([HAVE_ALIGNOF], 1, [whether the compiler supports __alignof__])
-  fi
-
   AC_DEFINE_UNQUOTED(PHP_USE_PHP_CRYPT_R, 1, [Whether PHP has to use its own crypt_r for blowfish, des, ext des and md5])
 
   PHP_ADD_SOURCES(PHP_EXT_DIR(standard), crypt_freesec.c crypt_blowfish.c crypt_sha512.c crypt_sha256.c php_crypt_r.c)