Make Makefile portable between make 4.2 and 4.3.

See https://lists.gnu.org/archive/html/bug-make/2020-01/msg00057.html for an explanation and the recommended workaround.
libfirm · Apr 29, 2020 · 8ec1a76 · 8ec1a76
1 parent b5aab0a
commit 8ec1a76
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/Makefile b/Makefile
@@ -91,8 +91,9 @@ REVISION ?= $(shell git --git-dir $(top_srcdir)/.git describe --abbrev=40 --alwa
 SELFCHECK_FLAGS ?= -Wall -Wno-shadow -Werror
 
 # Update revision.h if necessary
+HASH := \#
 UNUSED := $(shell \
-	REV="\#define cparser_REVISION \"$(REVISION)\""; \
+	REV="$(HASH)define cparser_REVISION \"$(REVISION)\""; \
 	echo "$$REV" | cmp -s - $(REVISIONH) 2> /dev/null || echo "$$REV" > $(REVISIONH) \
 )
 # determine if we can use "cparser-beta" as quickcheck

diff --git a/libfirm b/libfirm