Imported Upstream version 2.19.45

[lilypond.git] / stepmake / stepmake / help2man-rules.make

diff --git a/stepmake/stepmake/help2man-rules.make b/stepmake/stepmake/help2man-rules.make
index 0f4559ae30091295e042a86327806d3fc6d09a5d..9e2f042128d0fd8a6d00ae6a6698d7f7b14fb2af 100644 (file)
--- a/stepmake/stepmake/help2man-rules.make
+++ b/stepmake/stepmake/help2man-rules.make
@@ -1,10 +1,5 @@
-ifneq ($(outdir),./out)
-$(outdir)/%.1: out/%.1
-       cp $< $@
-endif
-
 # We must invoke the generated $(outdir)/help2man script instead of
-# the help2man.pl source, which means that the buildscripts directory
+# the help2man.pl source, which means that the scripts/build directory
 # must be built first.
 #
 # From the perlrun man-page:
@@ -20,18 +15,29 @@ endif
 # cases.  Four more explaining what a line comment is, and that it may
 # be parsed, same here.
 
-HELP2MAN_COMMAND = $(PERL) $(builddir)/buildscripts/$(outbase)/help2man $< > $@
+ifeq ($(PYTHON),$(TARGET_PYTHON))
+HELP2MAN_COMMAND = $(buildscript-dir)/help2man $< > $@
+else
+HELP2MAN_COMMAND = $(buildscript-dir)/help2man "env $$(basename $$(head -1 $<)) $<" > $@
+endif
 
-ifeq ($(cross),))
-$(outdir)/%.1: $(outdir)/%
+ifeq ($(strip $(CROSS)),no)
+$(outdir)/%.1: $(outdir)/% $(buildscript-dir)/help2man
+       echo $(buildscript-dir)/help2man
        $(HELP2MAN_COMMAND)
 else
-# When cross building, some manpages will not build because the executable
-# does not run.  We don not want to disable building manpages, because
-# the cross build process may generate them using a native executable.
-$(outdir)/%.1: $(outdir)/%
-       $(HELP2MAN_COMMAND) || \
-       (echo ""; echo "Apparently the man pages failed to build. This is";\
-        echo "no problem, since they don't contain any information anyway.";\
-        echo "Please run make again, and be prepared for NO manual pages.")
+# When cross building, some manpages will not build because the
+# executable does not run.  We assume the manpages to be generated
+# during a previous compile for the build host, with config=for-build,
+# in the directory $(outdir)-for-build.
+$(outdir)/%.1: $(outdir:%=%-for-build)/%.1
+       cp $< $@
 endif
+
+ifneq ($(outdir),./out)
+$(outdir)/%.1: out/%.1
+       cp $< $@
+endif
+
+$(buildscript-dir)/help2man:
+       $(MAKE) -C $(depth)/scripts/build