From 7290aea3b77fe6603a62cc686a23e1dbca21de65 Mon Sep 17 00:00:00 2001
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Date: Fri, 25 Aug 2017 19:18:17 +0200
Subject: nx-X11/Makefile: Only run full CleanEnv code, if imake is installed
 in the build-system.

---
 nx-X11/Makefile | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/nx-X11/Makefile b/nx-X11/Makefile
index 5845a4c77..c9f79c611 100644
--- a/nx-X11/Makefile
+++ b/nx-X11/Makefile
@@ -54,10 +54,12 @@ CleanEnv:
 	    $(RM) xmakefile; \
 	fi
 	@rm -f $(IRULESRC)/date.def; echo "" > $(IRULESRC)/date.def;
-	${MAKE} $(MFLAGS) xmakefile
-	${MAKE_CMD} $(MFLAGS) VerifyOS
-	${MAKE_CMD} $(MFLAGS) Makefiles
-	${MAKE_CMD} $(MFLAGS) BOOTSTRAPSUBDIRS= clean
+	which $(IMAKE) 1>/dev/null && ${MAKE} $(MFLAGS) xmakefile || :
+	@if [ -f xmakefile ]; then \
+	    ${MAKE_CMD} $(MFLAGS) VerifyOS; \
+	    ${MAKE_CMD} $(MFLAGS) Makefiles; \
+	    ${MAKE_CMD} $(MFLAGS) BOOTSTRAPSUBDIRS= clean; \
+	fi
 
 BuildEnv: CleanEnv BuildIncludes BuildDependsOnly
 
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