X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=m4%2Fstdint.m4;h=a2e8bdd62814a97e7be2875fd8f3cbf3b4c4ba8f;hb=5ff811558adf7013f9fd9109fa794dd4e5ee8c91;hp=e507a02eb8a7f36e42830dd21e19af9f46776231;hpb=3967960663215f46b78fa0b3bc002065e821dcb9;p=gnulib.git

diff --git a/m4/stdint.m4 b/m4/stdint.m4
index e507a02eb..a2e8bdd62 100644
--- a/m4/stdint.m4
+++ b/m4/stdint.m4
@@ -1,5 +1,5 @@
-# stdint.m4 serial 32
-dnl Copyright (C) 2001-2008 Free Software Foundation, Inc.
+# stdint.m4 serial 34
+dnl Copyright (C) 2001-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -9,7 +9,7 @@ dnl Test whether <stdint.h> is supported or must be substituted.
 
 AC_DEFUN([gl_STDINT_H],
 [
-  AC_PREREQ(2.59)dnl
+  AC_PREREQ([2.59])dnl
 
   dnl Check for long long int and unsigned long long int.
   AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
@@ -201,7 +201,75 @@ struct s {
   int check_size: (size_t) -1 == SIZE_MAX ? 1 : -1;
 };
          ]])],
-         [gl_cv_header_working_stdint_h=yes])])
+         [dnl Determine whether the various *_MIN, *_MAX macros are usable
+          dnl in preprocessor expression. We could do it by compiling a test
+          dnl program for each of these macros. It is faster to run a program
+          dnl that inspects the macro expansion.
+          dnl This detects a bug on HP-UX 11.23/ia64.
+          AC_RUN_IFELSE([
+            AC_LANG_PROGRAM([[
+#define __STDC_LIMIT_MACROS 1 /* to make it work also in C++ mode */
+#define __STDC_CONSTANT_MACROS 1 /* to make it work also in C++ mode */
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#include <stdint.h>
+]
+gl_STDINT_INCLUDES
+[
+#include <stdio.h>
+#include <string.h>
+#define MVAL(macro) MVAL1(macro)
+#define MVAL1(expression) #expression
+static const char *macro_values[] =
+  {
+#ifdef INT8_MAX
+    MVAL (INT8_MAX),
+#endif
+#ifdef INT16_MAX
+    MVAL (INT16_MAX),
+#endif
+#ifdef INT32_MAX
+    MVAL (INT32_MAX),
+#endif
+#ifdef INT64_MAX
+    MVAL (INT64_MAX),
+#endif
+#ifdef UINT8_MAX
+    MVAL (UINT8_MAX),
+#endif
+#ifdef UINT16_MAX
+    MVAL (UINT16_MAX),
+#endif
+#ifdef UINT32_MAX
+    MVAL (UINT32_MAX),
+#endif
+#ifdef UINT64_MAX
+    MVAL (UINT64_MAX),
+#endif
+    NULL
+  };
+]], [[
+  const char **mv;
+  for (mv = macro_values; *mv != NULL; mv++)
+    {
+      const char *value = *mv;
+      /* Test whether it looks like a cast expression.  */
+      if (strncmp (value, "((unsigned int)"/*)*/, 15) == 0
+          || strncmp (value, "((unsigned short)"/*)*/, 17) == 0
+          || strncmp (value, "((unsigned char)"/*)*/, 16) == 0
+          || strncmp (value, "((int)"/*)*/, 6) == 0
+          || strncmp (value, "((signed short)"/*)*/, 15) == 0
+          || strncmp (value, "((signed char)"/*)*/, 14) == 0)
+        return 1;
+    }
+  return 0;
+]])],
+              [gl_cv_header_working_stdint_h=yes],
+              [],
+              [dnl When cross-compiling, assume it works.
+               gl_cv_header_working_stdint_h=yes
+              ])
+         ])
+      ])
   fi
   if test "$gl_cv_header_working_stdint_h" = yes; then
     STDINT_H=
@@ -229,7 +297,7 @@ struct s {
     gl_STDINT_TYPE_PROPERTIES
     STDINT_H=stdint.h
   fi
-  AC_SUBST(STDINT_H)
+  AC_SUBST([STDINT_H])
 ])
 
 dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES)
@@ -292,7 +360,7 @@ AC_DEFUN([gl_CHECK_TYPES_SIGNED],
     eval result=\$gl_cv_type_${gltype}_signed
     GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
     if test "$result" = yes; then
-      AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], 1)
+      AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], [1])
       eval HAVE_SIGNED_${GLTYPE}=1
     else
       eval HAVE_SIGNED_${GLTYPE}=0
@@ -348,7 +416,7 @@ AC_DEFUN([gl_INTEGER_TYPE_SUFFIX],
     eval result=\$gl_cv_type_${gltype}_suffix
     test "$result" = no && result=
     eval ${GLTYPE}_SUFFIX=\$result
-    AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], $result)
+    AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], [$result])
   done
   m4_foreach_w([gltype], [$1],
     [AC_SUBST(translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX])])