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(configure.ac): Test for iconv support by compiling a program that includes the iconv header.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@19215 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
alexm 2004-04-29 21:04:27 +00:00
parent 46864153f0
commit 142fb2e34a
3 changed files with 134 additions and 180 deletions
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70
configure.ac
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@ -1088,10 +1088,30 @@ AM_LANGINFO_CODESET
#--------------------------------------------------------------------
# Check for iconv support (for Unicode conversion).
#--------------------------------------------------------------------
# Check in the glibc library
AC_CHECK_FUNCS(iconv)
if test $ac_cv_func_iconv = no; then
# Check if we have a libiconv library
# We need to find an iconv library that matches the installed iconv.h header
# (if any). It is important to check header/library compatibility. It's
# fairly common to have iconv support both in libc and from libiconv. In that
# case, a naive check that iconv() is in libc will succeed, but if we use
# libiconv's iconv.h, it will redefine iconv() to functions that exist
# only in libiconv, and we'll get link errors.
#
# First, check if there's a working iconv in libc (ie. if the test program
# compiles and links without any extra flags).
AC_MSG_CHECKING(iconv support)
AC_LINK_IFELSE([[#include <iconv.h>
int main(int argc,char **argv) { iconv_open("foo","bar"); }]]
,
# libc has a working iconv.
AC_DEFINE(HAVE_ICONV,1, [Define if you have this function])
AC_MSG_RESULT([[yes, in libc]])
found_iconv=yes
,
found_iconv=no
)
if test $found_iconv = no ; then
# libc doesn't have a working iconv. Try adding -liconv and any user
# supplied directory.
AC_ARG_WITH(libiconv-library,
[ --with-libiconv-library=PATH library path for libiconv libraries],
libiconv_libdir="$withval", libiconv_libdir="no")
@ -1099,21 +1119,39 @@ if test $ac_cv_func_iconv = no; then
if test "$libiconv_libdir" != "no"; then
LDFLAGS="$LDFLAGS -L$libiconv_libdir"
LIBS="$LIBS -L$libiconv_libdir"
fi
# BSDs install this lib as libgiconv
AC_CHECK_LIB(giconv, main)
if test x"$ac_cv_lib_giconv_main" = xyes; then
old_LIBS="$LIBS"
LIBS="$LIBS -liconv"
AC_LINK_IFELSE([[#include <iconv.h>
int main(int argc,char **argv) { iconv_open("foo","bar"); }]]
,
# -liconv works.
AC_DEFINE(HAVE_ICONV,1, [Define if you have this function])
AC_DEFINE(HAVE_GICONV_H,1, [Define if you have this header])
else
AC_CHECK_LIB(iconv, main)
if test x"$ac_cv_lib_iconv_main" = xyes; then
AC_DEFINE(HAVE_ICONV,1, [Define if you have this function])
fi
fi
LDFLAGS="$ldflags_temp"
AC_MSG_RESULT([[yes, -liconv]])
found_iconv=yes
,
found_iconv=no
LDFLAGS="$ldflags_temp"
LIBS="$old_LIBS"
)
fi
if test $found_iconv = no ; then
# -liconv didn't work. Try giconv.h and -lgiconv.
# BSDs install this lib as libgiconv.
old_LIBS="$LIBS"
LIBS="$LIBS -lgiconv"
AC_LINK_IFELSE([[#include <giconv.h>
int main(int argc,char **argv) { iconv_open("foo","bar"); }]]
,
AC_DEFINE(HAVE_ICONV,1, [Define if you have this function])
AC_DEFINE(HAVE_GICONV,1, [Define if you have this function])
AC_MSG_RESULT([[yes, -lgiconv]])
,
AC_MSG_RESULT([[no]])
LIBS="$old_LIBS"
)
fi
AC_SUBST(INCLUDE_FLAGS)