4 dnl From codeset.m4 (in libcharset):
9 AC_DEFUN(jm_LANGINFO_CODESET,
11 AC_CHECK_HEADERS(langinfo.h)
12 AC_CHECK_FUNCS(nl_langinfo)
14 AC_CACHE_CHECK([for nl_langinfo and CODESET], jm_cv_langinfo_codeset,
15 [AC_TRY_LINK([#include <langinfo.h>],
16 [char* cs = nl_langinfo(CODESET);],
17 jm_cv_langinfo_codeset=yes,
18 jm_cv_langinfo_codeset=no)
20 if test $jm_cv_langinfo_codeset = yes; then
21 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
22 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
26 dnl From glibc21.m4 (in libcharset):
29 # Test for the GNU C Library, version 2.1 or newer.
34 AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
35 ac_cv_gnu_library_2_1,
36 [AC_EGREP_CPP([Lucky GNU user],
39 #ifdef __GNU_LIBRARY__
40 #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
45 ac_cv_gnu_library_2_1=yes,
46 ac_cv_gnu_library_2_1=no)
50 GLIBC21="$ac_cv_gnu_library_2_1"
56 dnl Checks whether iconv is coming from glibc, defines USE_GLIBC_ICONV if so
57 dnl The variable $is_glibc_iconv contains yes or no
58 AC_DEFUN(AC_GLIBC_ICONV, [
59 AC_CACHE_CHECK(for the GNU C Library iconv implementation, is_glibc_iconv, [
66 ], is_glibc_iconv=yes, is_glibc_iconv=no)
68 if test "$is_glibc_iconv" = yes; then
69 AC_DEFINE(USE_GLIBC_ICONV,1,
70 [Define if the GNU implementation of iconv in glibc is used])
74 dnl AC_LIBICONV_HAS_ANSEL()
75 dnl Checks whether libiconv has ANSEL support
76 dnl The variable $is_ansel_supported contains yes or no
77 AC_DEFUN(AC_LIBICONV_HAS_ANSEL, [
78 AC_CACHE_CHECK(for ANSEL support in libiconv, is_ansel_supported, [
80 LIBS="$LIBS $LIBICONV"
84 iconv_t cd = iconv_open("UTF-8","ANSEL");
85 return (cd == (iconv_t)-1);
88 is_ansel_supported=yes,
89 is_ansel_supported=no,
90 is_ansel_supported=no)