Re: [PATCH 1/2] move Git.pm build instructions into perl/Makefile

["Alex Riesen" <raa.lkml@gmail.com>]

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On 12/3/06, Junio C Hamano <junkio@cox.net> wrote:
> > This is the first patch, just rebased upon current master.
> > The ActiveState-related parts follow
>
> diff --git a/perl/.gitignore b/perl/.gitignore
> index e990cae..98b2477 100644
> --- a/perl/.gitignore
> +++ b/perl/.gitignore
> @@ -1,4 +1,5 @@
> -Makefile
> +perl.mak
> +perl.mak.old
>  blib
>  blibdirs
>  pm_to_blib
>
> This, and perl/Makefile not cleaning perl.mak.old, are wrong.

How is this wrong, and the previous (for when there weren't
Makefile at all) Makefile-in-.gitignore is not?
These are generated files, what do you want to preserve them for?

> "make && make clean" after a fresh checkout should leave the
> working tree the same state is it were.

oh, right. Missed it (never seen it generated, BTW. Just took
from Pasky's code that it happens).

Updated patch attached.

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Author: Alex Riesen <raa.lkml@gmail.com>
Date: Mon Dec 4 10:50:04 2006 +0100
Subject: Move Git.pm build instructions into perl/Makefile

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>

diff --git a/Makefile b/Makefile
index de3e9f3..3e6825b 100644
--- a/Makefile
+++ b/Makefile
@@ -539,6 +539,9 @@ endif
 ifdef NO_ACCURATE_DIFF
 	BASIC_CFLAGS += -DNO_ACCURATE_DIFF
 endif
+ifdef NO_PERL_MAKEMAKER
+	export NO_PERL_MAKEMAKER
+endif
 
 # Shell quote (do not use $(call) to accommodate ancient setups);
 
@@ -568,8 +571,8 @@ export prefix TAR INSTALL DESTDIR SHELL_PATH template_dir
 
 all: $(ALL_PROGRAMS) $(BUILT_INS) git$X gitk gitweb/gitweb.cgi
 
-all: perl/Makefile
-	$(MAKE) -C perl
+all:
+	$(MAKE) -C perl PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' all
 	$(MAKE) -C templates
 
 strip: $(PROGRAMS) git$X
@@ -602,7 +605,11 @@ $(patsubst %.sh,%,$(SCRIPT_SH)) : % : %.sh
 	chmod +x $@+
 	mv $@+ $@
 
-$(patsubst %.perl,%,$(SCRIPT_PERL)): perl/Makefile
+$(patsubst %.perl,%,$(SCRIPT_PERL)): perl/perl.mak
+
+perl/perl.mak: GIT-CFLAGS
+	$(MAKE) -C perl PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' $(@F)
+
 $(patsubst %.perl,%,$(SCRIPT_PERL)): % : %.perl
 	rm -f $@ $@+
 	INSTLIBDIR=`$(MAKE) -C perl -s --no-print-directory instlibdir` && \
@@ -796,7 +803,7 @@ install: all
 	$(INSTALL) $(ALL_PROGRAMS) '$(DESTDIR_SQ)$(gitexecdir_SQ)'
 	$(INSTALL) git$X gitk '$(DESTDIR_SQ)$(bindir_SQ)'
 	$(MAKE) -C templates DESTDIR='$(DESTDIR_SQ)' install
-	$(MAKE) -C perl install
+	$(MAKE) -C perl prefix='$(prefix_SQ)' install
 	if test 'z$(bindir_SQ)' != 'z$(gitexecdir_SQ)'; \
 	then \
 		ln -f '$(DESTDIR_SQ)$(bindir_SQ)/git$X' \
@@ -866,8 +873,7 @@ clean:
 	rm -f $(htmldocs).tar.gz $(manpages).tar.gz
 	rm -f gitweb/gitweb.cgi
 	$(MAKE) -C Documentation/ clean
-	[ ! -f perl/Makefile ] || $(MAKE) -C perl/ clean || $(MAKE) -C perl/ clean
-	rm -f perl/ppport.h perl/Makefile.old
+	$(MAKE) -C perl clean
 	$(MAKE) -C templates/ clean
 	$(MAKE) -C t/ clean
 	rm -f GIT-VERSION-FILE GIT-CFLAGS
diff --git a/perl/.gitignore b/perl/.gitignore
index e990cae..98b2477 100644
--- a/perl/.gitignore
+++ b/perl/.gitignore
@@ -1,4 +1,5 @@
-Makefile
+perl.mak
+perl.mak.old
 blib
 blibdirs
 pm_to_blib
diff --git a/perl/Makefile b/perl/Makefile
new file mode 100644
index 0000000..bd483b0
--- /dev/null
+++ b/perl/Makefile
@@ -0,0 +1,39 @@
+#
+# Makefile for perl support modules and routine
+#
+makfile:=perl.mak
+
+PERL_PATH_SQ = $(subst ','\'',$(PERL_PATH))
+prefix_SQ = $(subst ','\'',$(prefix))
+
+all install instlibdir: $(makfile)
+	$(MAKE) -f $(makfile) $@
+
+clean:
+	test -f $(makfile) && $(MAKE) -f $(makfile) $@ || exit 0
+	$(RM) ppport.h
+	$(RM) $(makfile)
+	$(RM) $(makfile).old
+
+ifdef NO_PERL_MAKEMAKER
+instdir_SQ = $(subst ','\'',$(prefix)/lib)
+$(makfile): ../GIT-CFLAGS Makefile
+	echo all: > $@
+	echo '	:' >> $@
+	echo install: >> $@
+	echo '	mkdir -p $(instdir_SQ)' >> $@
+	echo '	$(RM) $(instdir_SQ)/Git.pm; cp Git.pm $(instdir_SQ)' >> $@
+	echo '	$(RM) $(instdir_SQ)/Error.pm; \
+	cp private-Error.pm $(instdir_SQ)/Error.pm' >> $@
+	echo instlibdir: >> $@
+	echo '	echo $(instdir_SQ)' >> $@
+else
+$(makfile): Makefile.PL ../GIT-CFLAGS
+	'$(PERL_PATH_SQ)' $< FIRST_MAKEFILE='$@' PREFIX='$(prefix_SQ)'
+endif
+
+# this is just added comfort for calling make directly in perl dir
+# (even though GIT-CFLAGS aren't used yet. If ever)
+../GIT-CFLAGS:
+	$(MAKE) -C .. GIT-CFLAGS
+