X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=configure.ac;h=36a1f4bdd88ab90797d2802848eec02b6da70001;hp=0b00cc2af9f006d492975a54210ce26f4e5aa56e;hb=534a94f441767947874cb15d18211edf758e9277;hpb=94802b02fadd65ac1704fe9fcbcf0a2b023d2fa4

diff --git a/configure.ac b/configure.ac
index 0b00cc2a..36a1f4bd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -67,6 +67,10 @@ AC_PATH_PROG([INSTALL], [install])
 test -z "$INSTALL" && AC_MSG_ERROR(
 	[The install program is required to build this package])
 
+AC_PATH_PROG([lopsubgen], [lopsubgen])
+test -z "$lopsubgen" && AC_MSG_ERROR(
+	[lopsubgen is required to build this package])
+
 AC_PROG_CC
 AC_PROG_CPP
 
@@ -92,6 +96,22 @@ AC_CHECK_HEADER(osl.h, [], [HAVE_OSL=no])
 AC_CHECK_LIB([osl], [osl_open_table], [], [HAVE_OSL=no])
 LIB_SUBST_FLAGS(osl)
 UNSTASH_FLAGS
+######################################################################## lopsub
+STASH_FLAGS
+LIB_ARG_WITH([lopsub], [-llopsub])
+HAVE_LOPSUB=yes
+AC_CHECK_HEADER(lopsub.h, [], [HAVE_LOPSUB=no])
+AC_CHECK_LIB([lopsub], [lls_merge], [], [HAVE_LOPSUB=yes])
+if test $HAVE_LOPSUB = no; then AC_MSG_ERROR([
+	The lopsub library is required to build this software, but
+	the above checks indicate it is not installed on your system.
+	Run the following command to download a copy.
+		git clone git://git.tuebingen.mpg.de/lopsub.git
+	Install the library, then run this configure script again.
+])
+fi
+LIB_SUBST_FLAGS([lopsub])
+UNSTASH_FLAGS
 ######################################################################## openssl
 STASH_FLAGS
 HAVE_OPENSSL=yes