diff options
| -rw-r--r-- | lib/isabelle/Makefile | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/isabelle/Makefile b/lib/isabelle/Makefile index 465b4c36..884159fb 100644 --- a/lib/isabelle/Makefile +++ b/lib/isabelle/Makefile @@ -18,10 +18,10 @@ all: thys thys: $(THYS) heap-img: thys $(EXTRA_THYS) ROOT -ifeq ($(wildcard $(LEM_ISA_LIB)/ROOT),) - $(error isabelle-lib directory of Lem not found. Please set the LEM_ISA_LIB environment variable) -endif - isabelle build -b -d $(LEM_ISA_LIB) -D . + if [ -z "$(wildcard $(LEM_ISA_LIB)/ROOT)" ]; \ + then echo isabelle-lib directory of Lem not found. Please set the LEM_ISA_LIB environment variable; false; \ + else isabelle build -b -d $(LEM_ISA_LIB) -D . ; \ + fi manual: heap-img manual/Manual.thy manual/ROOT manual/document/root.tex cp output/document/session_graph.pdf manual/document/Sail_session_graph.pdf |