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elinks/config/m4/iconv.m4
Jonas Fonseca a370e7ccac Improve CPPFLAGS usage
CPPFLAGS was dropped[1] back on 2004-04-24. Then a workaround was
introduced by commit 6d7e9bfe5b to fix
compilation on FreeBSD that used CPPFLAGS to store iconv related flags.
The use of CPPFLAGS with respect to the COMPILE "macro" reappeared in
40e257bedd on 2006-08-05.

This commit makes configure.in print CPPFLAGS and LDFLAGS. Before,
CPPFLAGS and CFLAGS was mixed together in the feature summary. It also
restores the use of CPPFLAGS storing iconv related flags but keeps the
use of the SAVE/RESTORE_FLAGS in the iconv macro.

Reported by Daniel E. Macks <dmacks@netspace.org> on 2005-11-22 in a mail
to elinks-users with the ID: <slrnem7tjs.lvk.dmacks@happy.netspace.org>.

[1] http://pasky.or.cz/gitweb.cgi?p=elinks-history.git;a=commit;h=ebad0e71572b41dac5376e148fe4b1b5cb9ccc33
2006-11-22 20:16:18 +01:00

73 lines
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Plaintext

#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).
EL_SAVE_FLAGS
AC_ARG_WITH([libiconv],
[ --with-libiconv=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"
else
EL_RESTORE_FLAGS
fi
])