Local macro's for configure.in.

diff --git a/acinclude.m4 b/acinclude.m4
new file mode 100644 (file)
index 0000000..a4799c9
--- /dev/null
+++ b/acinclude.m4
@@ -0,0 +1,111 @@
+dnl From iconv.m4:
+#serial AM2
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_ICONV],
+[
+  dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
+  dnl those with the standalone portable GNU libiconv installed).
+
+  AC_ARG_WITH([libiconv-prefix],
+[  --with-libiconv-prefix=DIR  search for libiconv in DIR/include and DIR/lib], [
+    for dir in `echo "$withval" | tr : ' '`; do
+      if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
+      if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi
+    done
+   ])
+
+  AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    AC_TRY_LINK([#include <stdlib.h>
+#include <iconv.h>],
+      [iconv_t cd = iconv_open("","");
+       iconv(cd,NULL,NULL,NULL,NULL);
+       iconv_close(cd);],
+      am_cv_func_iconv=yes)
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS -liconv"
+      AC_TRY_LINK([#include <stdlib.h>
+#include <iconv.h>],
+        [iconv_t cd = iconv_open("","");
+         iconv(cd,NULL,NULL,NULL,NULL);
+         iconv_close(cd);],
+        am_cv_lib_iconv=yes
+        am_cv_func_iconv=yes)
+      LIBS="$am_save_LIBS"
+    fi
+  ])
+  if test "$am_cv_func_iconv" = yes; then
+    AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
+    AC_MSG_CHECKING([for iconv declaration])
+    AC_CACHE_VAL(am_cv_proto_iconv, [
+      AC_TRY_COMPILE([
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(__cplusplus)
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+#else
+size_t iconv();
+#endif
+], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
+      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
+    am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
+    AC_MSG_RESULT([$]{ac_t:-
+         }[$]am_cv_proto_iconv)
+    AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
+      [Define as const if the declaration of iconv() needs const.])
+  fi
+  LIBICONV=
+  if test "$am_cv_lib_iconv" = yes; then
+    LIBICONV="-liconv"
+  fi
+  AC_SUBST(LIBICONV)
+])
+
+dnl Own functions
+dnl AC_GLIBC_ICONV()
+dnl Checks whether iconv is coming from glibc, defines USE_GLIBC_ICONV if so
+dnl The variable $is_glibc_iconv contains yes or no
+AC_DEFUN(AC_GLIBC_ICONV, [
+  AC_CACHE_CHECK(for the GNU C Library iconv implementation, is_glibc_iconv, [
+    AC_EGREP_CPP(yes,
+    [
+#include <iconv.h>
+#ifdef __GLIBC__
+yes
+#endif
+    ], is_glibc_iconv=yes, is_glibc_iconv=no)
+  ])
+  if test "$is_glibc_iconv" = yes; then
+    AC_DEFINE(USE_GLIBC_ICONV,1,
+      [Define if the GNU implementation of iconv in glibc is used])
+  fi
+])
+
+dnl AC_LIBICONV_HAS_ANSEL()
+dnl Checks whether libiconv has ANSEL support
+dnl The variable $is_ansel_supported contains yes or no
+AC_DEFUN(AC_LIBICONV_HAS_ANSEL, [
+  AC_CACHE_CHECK(for ANSEL support in libiconv, is_ansel_supported, [
+    my_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBICONV"
+    AC_TRY_RUN([
+#include <iconv.h>
+int main() {
+  iconv_t cd = iconv_open("UTF-8","ANSEL");
+  return (cd == (iconv_t)-1);
+}
+    ],
+    is_ansel_supported=yes,
+    is_ansel_supported=no,
+    is_ansel_supported=no)
+    LIBS="$my_save_LIBS"
+  ])
+])