* configure.in: check posix_memalign(3) and menalign(3).

* gc.c (aligned_malloc): use configure's result instead of
  _POSIX_C_SOURCE and _XOPEN_SOURCE because they can't be used
  to check availability at least on FreeBSD.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34226 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,11 @@
+Sun Jan  8 00:10:10 2012  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* configure.in: check posix_memalign(3) and menalign(3).
+
+	* gc.c (aligned_malloc): use configure's result instead of
+	  _POSIX_C_SOURCE and _XOPEN_SOURCE because they can't be used
+	  to check availability at least on FreeBSD.
+
 Sat Jan  7 22:25:50 2012  Narihiro Nakamura  <authornari@gmail.com>
 
 	* gc.c: use Bitmap Marking algorithm to avoid copy-on-write of

configure.in

@@ -1393,7 +1393,7 @@ AC_CHECK_FUNCS(fmod killpg wait4 waitpid fork spawnv syscall __syscall chroot ge
 	      setuid setgid daemon select_large_fdset setenv unsetenv\
               mktime timegm gmtime_r clock_gettime gettimeofday poll ppoll\
               pread sendfile shutdown sigaltstack dl_iterate_phdr\
-              dup3 pipe2)
+              dup3 pipe2 posix_memalign memalign)
 
 AC_CACHE_CHECK(for unsetenv returns a value, rb_cv_unsetenv_return_value,
   [AC_TRY_COMPILE([

gc.c

@@ -24,7 +24,6 @@
 #include <stdio.h>
 #include <setjmp.h>
 #include <sys/types.h>
-#include <malloc.h>
 #include <assert.h>
 
 #ifdef HAVE_SYS_TIME_H
@@ -39,6 +38,10 @@
 #include <windows.h>
 #endif
 
+#if !defined(__MINGW32__) && !defined(_WIN32) && !defined(__CYGWIN__) &&!defined(HAVE_POSIX_MEMALIGN) &&defined(HAVE_MEMALIGN)
+#include <malloc.h>
+#endif
+
 #ifdef HAVE_VALGRIND_MEMCHECK_H
 # include <valgrind/memcheck.h>
 # ifndef VALGRIND_MAKE_MEM_DEFINED
@@ -1061,16 +1064,16 @@ aligned_malloc(size_t aligned_size)
     res = __mingw_aligned_malloc(aligned_size, aligned_size);
 #elif _WIN32 || defined __CYGWIN__
     res = _aligned_malloc(aligned_size, aligned_size);
-#else
+#elif defined(HAVE_POSIX_MEMALIGN)
-# if _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600
     if (posix_memalign(&res, aligned_size, aligned_size) == 0) {
         return res;
     } else {
         return NULL;
     }
-# else
+#elif defined(HAVE_MEMALIGN)
     res = memalign(aligned_size, aligned_size);
-# endif
+#else
+#error no memalign function
 #endif
     return res;
 }