Add a pre-install target which checks for conflicting shared

libraries left over from other Modula-3 ports.

2 files changed, 18 insertions, 0 deletions

diff --git a/lang/ezm3/Makefile b/lang/ezm3/Makefile
index 8d29c2d34f3f..ee92f9d80f43 100644
--- a/lang/ezm3/Makefile
+++ b/lang/ezm3/Makefile
@@ -64,6 +64,9 @@ do-build:
 	@${ECHO_MSG} "This port does everything in the install step."
 	@${ECHO_MSG} "The build step is a no-op."
 
+pre-install:
+	@${SETENV} ${SCRIPTS_ENV} ${SH} ${SCRIPTDIR}/check_conflicts
+
 do-install:
 	@${RM} -rf ${WRKSRC}/${TARGET}
 	@(cd ${WRKSRC} && ${SETENV} ${MAKE_ENV} ${GMAKE} ${MAKE_FLAGS} \
diff --git a/lang/ezm3/scripts/check_conflicts b/lang/ezm3/scripts/check_conflicts
new file mode 100644
index 000000000000..0610f783f80e
--- /dev/null
+++ b/lang/ezm3/scripts/check_conflicts
@@ -0,0 +1,15 @@
+#! /bin/sh
+# Check for shared libraries left over from another Modula-3 port.
+
+libdir=${PREFIX}/lib/m3/${TARGET}
+
+case "`echo ${libdir}/lib*.so*`" in
+"${libdir}/lib*.so*")
+    exit 0;;
+*)
+    echo ""
+    echo "You have some Modula-3 shared libraries in ${libdir}"
+    echo "which conflict with ezm3.  Please use pkg_delete to remove other"
+    echo "versions of Modula-3, such as \"modula-3*\" and \"pm3-*\"."
+    exit 1;;
+esac