Update README via replace-VERSION (GNU make is used anyway).

[gedcom-parse.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
index 7eb2ce35f49744eb8cde421267113f3e8ca1f3a1..e50ed926b1ac5df72eb1f0bfd44f5a8ed40d5a0f 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1,5 +1,56 @@
 dnl $Id$
 dnl $Name$
+
+dnl From codeset.m4 (in libcharset):
+#serial 2
+
+dnl From Bruno Haible.
+
+AC_DEFUN(jm_LANGINFO_CODESET,
+[
+  AC_CHECK_HEADERS(langinfo.h)
+  AC_CHECK_FUNCS(nl_langinfo)
+
+  AC_CACHE_CHECK([for nl_langinfo and CODESET], jm_cv_langinfo_codeset,
+    [AC_TRY_LINK([#include <langinfo.h>],
+      [char* cs = nl_langinfo(CODESET);],
+      jm_cv_langinfo_codeset=yes,
+      jm_cv_langinfo_codeset=no)
+    ])
+  if test $jm_cv_langinfo_codeset = yes; then
+    AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
+      [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
+  fi
+])
+
+dnl From glibc21.m4 (in libcharset):
+#serial 2
+
+# Test for the GNU C Library, version 2.1 or newer.
+# From Bruno Haible.
+
+AC_DEFUN(jm_GLIBC21,
+  [
+    AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
+      ac_cv_gnu_library_2_1,
+      [AC_EGREP_CPP([Lucky GNU user],
+       [
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
+  Lucky GNU user
+ #endif
+#endif
+       ],
+       ac_cv_gnu_library_2_1=yes,
+       ac_cv_gnu_library_2_1=no)
+      ]
+    )
+    AC_SUBST(GLIBC21)
+    GLIBC21="$ac_cv_gnu_library_2_1"
+  ]
+)
+
 dnl From iconv.m4:
 #serial AM2