build: Improve lopsub error diagnostics.

[paraslash.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index a589613b5ad5f000edb65f77e6f73101f1d34ae2..6d56e6526e13d9f3f9aa47c0306d9b271136c872 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -55,10 +55,6 @@ AC_PATH_PROG([M4], [m4])
 test -z "$M4" && AC_MSG_ERROR(
        [The m4 macro processor 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
 
@@ -72,11 +68,13 @@ AC_CHECK_LIB([osl], [osl_open_table], [], [HAVE_OSL=no])
 LIB_SUBST_FLAGS(osl)
 UNSTASH_FLAGS
 ######################################################################## lopsub
+HAVE_LOPSUB=yes
+AC_PATH_PROG([lopsubgen], [lopsubgen])
+test -z "$lopsubgen" && HAVE_LOPSUB=no
 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])
+AC_CHECK_LIB([lopsub], [lls_merge], [], [HAVE_LOPSUB=no])
 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.