[evolution-exchange] Bug #597932 - Split out Kerberos 5 check into an macro

[Henning Habighorst <hhabig src gnome org>]

commit ed70f045741239c21aae48d792851f3d9d8e1b5e
Author: H. Habighorst <h habighorst googlemail com>
Date:   Fri Oct 9 21:29:40 2009 +0200

    Bug #597932 - Split out Kerberos 5 check into an macro

 m4/evo_krb5_support.m4 |  104 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 104 insertions(+), 0 deletions(-)
---
diff --git a/m4/evo_krb5_support.m4 b/m4/evo_krb5_support.m4
new file mode 100644
index 0000000..fd27581
--- /dev/null
+++ b/m4/evo_krb5_support.m4
@@ -0,0 +1,104 @@
+#serial 0.1
+AC_DEFUN([EVO_KRB5_SUPPORT],[
+	dnl ******************************
+	dnl Kerberos
+	dnl ******************************
+	AC_ARG_WITH([krb5],
+		AS_HELP_STRING([--with-krb5=PATH],
+		[Location of Kerberos 5 install dir]),
+		[with_krb5="$withval"], [with_krb5="no"])
+
+	AC_ARG_WITH([krb5-libs],
+		AS_HELP_STRING([--with-krb5-libs=PATH],
+		[Location of Kerberos 5 libraries]),
+		[with_krb5_libs="$withval"], [with_krb5_libs="$with_krb5/lib"])
+
+	AC_ARG_WITH([krb5-includes],
+		AS_HELP_STRING([--with-krb5-includes=PATH],
+		[Location of Kerberos 5 headers]),
+		[with_krb5_includes="$withval"], [with_krb5_includes="$with_krb5/include"])
+
+	dnl ******************************
+	dnl Kerberos 5
+	dnl ******************************
+	msg_krb5="no"
+	AC_MSG_CHECKING([for Kerberos 5])
+	if test "x${with_krb5}" != "xno"; then
+		LIBS_save="$LIBS"
+
+		mitlibs="-lkrb5 -lk5crypto -lcom_err -lgssapi_krb5"
+		heimlibs="-lkrb5 -lcrypto -lasn1 -lcom_err -lroken -lgssapi"
+		sunlibs="-lkrb5 -lgss"
+		AC_CACHE_VAL([ac_cv_lib_kerberos5],
+		[
+			LIBS="$LIBS -L$with_krb5_libs $mitlibs"
+			AC_LINK_IFELSE([AC_LANG_CALL([], [krb5_init_context])],
+			[ac_cv_lib_kerberos5="$mitlibs"],
+			[
+				LIBS="$LIBS_save -L$with_krb5_libs $heimlibs"
+				AC_LINK_IFELSE([AC_LANG_CALL([], [krb5_init_context])],
+				[ac_cv_lib_kerberos5="$heimlibs"],
+				[
+					LIBS="$LIBS_save -L$with_krb5_libs $sunlibs"
+					AC_LINK_IFELSE([AC_LANG_CALL([], [krb5_init_context])],
+					[ac_cv_lib_kerberos5="$sunlibs"], [ac_cv_lib_kerberos5="no"])
+				])
+			])
+			LIBS="$LIBS_save"
+		])
+		if test "$ac_cv_lib_kerberos5" != "no"; then
+			AC_DEFINE(HAVE_KRB5,1,[Define if you have Krb5])
+			if test "$ac_cv_lib_kerberos5" = "$mitlibs"; then
+				AC_DEFINE(HAVE_MIT_KRB5,1,[Define if you have MIT Krb5])
+				if test -z "$with_krb5_includes"; then
+					KRB5_CFLAGS="-I$with_krb5/include"
+				else
+					KRB5_CFLAGS="-I$with_krb5_includes"
+				fi
+				msg_krb5="yes (MIT)"
+			else
+				if test "$ac_cv_lib_kerberos5" = "$heimlibs"; then
+					AC_DEFINE(HAVE_HEIMDAL_KRB5,1,[Define if you have Heimdal])
+					if test -z "$with_krb5_includes"; then
+						KRB5_CFLAGS="-I$with_krb5/include/heimdal"
+					else
+						KRB5_CFLAGS="-I$with_krb5_includes"
+					fi
+					msg_krb5="yes (Heimdal)"
+				else
+					AC_DEFINE(HAVE_SUN_KRB5,1,[Define if you have Sun Kerberosv5])
+					if test -z "$with_krb5_includes"; then
+						KRB5_CFLAGS="-I$with_krb5/include/kerberosv5"
+					else
+						KRB5_CFLAGS="-I$with_krb5_includes"
+					fi
+					msg_krb5="yes (Sun)"
+				fi
+			fi
+			KRB5_LIBS="-L$with_krb5_libs $ac_cv_lib_kerberos5"
+		else
+			AC_MSG_ERROR([You specified with krb5, but it was not found.])
+		fi
+	else
+		msg_krb5="no"
+	fi
+	AC_MSG_RESULT([$msg_krb5])
+
+	AM_CONDITIONAL(ENABLE_KRB5, [test "x$with_krb5" != "xno"])
+
+	AC_CHECK_HEADER([et/com_err.h],
+		[AC_DEFINE([HAVE_ET_COM_ERR_H], 1, [Have <et/comm_err.h>])],,
+		[[	#if HAVE_ET_COM_ERR_H
+			#include <com_err.h>
+			#endif
+		]])
+	AC_CHECK_HEADER([com_err.h],
+		[AC_DEFINE([HAVE_COM_ERR_H], 1, [Have <comm_err.h>])],,
+		[[	#if HAVE_COM_ERR_H
+			#include <com_err.h>
+			#endif
+		]])
+
+	AC_SUBST(KRB5_CFLAGS)
+	AC_SUBST(KRB5_LIBS)
+])