also test for stdlib.h

don't use STDC_HEADERS in ifdef for stdlib.h

diff --git a/m4/decl.m4 b/m4/decl.m4
index bbe7593..dcf92c5 100644 (file)
--- a/m4/decl.m4
+++ b/m4/decl.m4
@@ -4,6 +4,7 @@ AC_DEFUN(jm_CHECK_DECLARATION,
   test -z "$ac_cv_header_memory_h" && AC_CHECK_HEADERS(memory.h)
   test -z "$ac_cv_header_string_h" && AC_CHECK_HEADERS(string.h)
   test -z "$ac_cv_header_strings_h" && AC_CHECK_HEADERS(strings.h)
+  test -z "$ac_cv_header_stdlib_h" && AC_CHECK_HEADERS(stdlib.h)
   test -z "$ac_cv_header_unistd_h" && AC_CHECK_HEADERS(unistd.h)
   AC_MSG_CHECKING([whether $1 is declared])
   AC_CACHE_VAL(jm_cv_func_decl_$1,
@@ -19,7 +20,7 @@ AC_DEFUN(jm_CHECK_DECLARATION,
 #  include <strings.h>
 # endif
 #endif
-#ifdef STDC_HEADERS
+#ifdef HAVE_STDLIB_H
 # include <stdlib.h>
 #endif
 #ifdef HAVE_UNISTD_H