Improve detection of iconv(3) for various platforms. M4 code is similar to what I use in Midgard for past few years, modified for Samba needs.

(This used to be commit 747d2d70a9eb4d9222d7b63e5fcec269eda76672)

1 files changed, 92 insertions, 0 deletions

diff --git a/source3/aclocal.m4 b/source3/aclocal.m4
index 5b1500106c..345be73aed 100644
--- a/source3/aclocal.m4
+++ b/source3/aclocal.m4
@@ -485,3 +485,95 @@ AC_DEFUN(LIB_REMOVE_USR_LIB,[
   done
   $1=[$]ac_new_flags
 ])
+
+dnl From Bruno Haible.
+
+AC_DEFUN(jm_ICONV,
+[
+  dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
+  dnl those with the standalone portable libiconv installed).
+  AC_MSG_CHECKING(for iconv in $1)
+    jm_cv_func_iconv="no"
+    jm_cv_lib_iconv=no
+    jm_cv_giconv=no
+    AC_TRY_LINK([#include <stdlib.h>
+#include <giconv.h>],
+      [iconv_t cd = iconv_open("","");
+       iconv(cd,NULL,NULL,NULL,NULL);
+       iconv_close(cd);],
+      jm_cv_func_iconv=yes
+      jm_cv_giconv=yes)
+
+    if test "$jm_cv_func_iconv" != yes; then
+      AC_TRY_LINK([#include <stdlib.h>
+#include <iconv.h>],
+        [iconv_t cd = iconv_open("","");
+         iconv(cd,NULL,NULL,NULL,NULL);
+         iconv_close(cd);],
+        jm_cv_func_iconv=yes)
+
+        if test "$jm_cv_lib_iconv" != yes; then
+          jm_save_LIBS="$LIBS"
+          LIBS="$LIBS -lgiconv"
+          AC_TRY_LINK([#include <stdlib.h>
+#include <giconv.h>],
+            [iconv_t cd = iconv_open("","");
+             iconv(cd,NULL,NULL,NULL,NULL);
+             iconv_close(cd);],
+            jm_cv_lib_iconv=yes
+            jm_cv_func_iconv=yes
+            jm_cv_giconv=yes)
+          LIBS="$jm_save_LIBS"
+
+      if test "$jm_cv_func_iconv" != yes; then
+        jm_save_LIBS="$LIBS"
+        LIBS="$LIBS -liconv"
+        AC_TRY_LINK([#include <stdlib.h>
+#include <iconv.h>],
+          [iconv_t cd = iconv_open("","");
+           iconv(cd,NULL,NULL,NULL,NULL);
+           iconv_close(cd);],
+          jm_cv_lib_iconv=yes
+          jm_cv_func_iconv=yes)
+        LIBS="$jm_save_LIBS"
+        fi
+      fi
+    fi
+
+  if test "$jm_cv_func_iconv" = yes; then
+    if test "$jm_cv_giconv" = yes; then
+      AC_DEFINE(HAVE_GICONV, 1, [What header to include for iconv() function: giconv.h])
+      AC_MSG_RESULT(yes)
+      ICONV_FOUND=yes
+    else
+      AC_DEFINE(HAVE_ICONV, 1, [What header to include for iconv() function: iconv.h])
+      AC_MSG_RESULT(yes)
+      ICONV_FOUND=yes
+    fi
+  else
+    AC_MSG_RESULT(no)
+  fi
+  if test "$jm_cv_lib_iconv" = yes; then
+    if test "$jm_cv_giconv" = yes; then
+      LIBS="$LIBS -lgiconv"
+    else
+      LIBS="$LIBS -liconv"
+    fi
+  fi
+])
+
+dnl CFLAGS_ADD_DIR(CFLAGS, $INCDIR)
+dnl This function doesn't add -I/usr/include into CFLAGS
+AC_DEFUN(CFLAGS_ADD_DIR,[
+if test "$2" != "/usr/include" ; then
+    $1="$$1 -I$2"
+fi
+])
+
+dnl LIB_ADD_DIR(LDFLAGS, $LIBDIR)
+dnl This function doesn't add -L/usr/lib into LDFLAGS
+AC_DEFUN(LIB_ADD_DIR,[
+if test "$2" != "/usr/lib" ; then
+    $1="$$1 -L$2"
+fi
+])