From 089c60a05e95bee1ab3c506069f8e0e75eb43657 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <LukeShu@sbcglobal.net>
Date: Thu, 20 Mar 2014 16:27:41 -0400
Subject: Generalize the patching mechanism in the build system.

---
 common.mk                   | 28 ++++++++++++++++++++++++----
 src/chroot-tools/.gitignore |  3 +--
 src/chroot-tools/Makefile   | 24 +-----------------------
 src/devtools/.gitignore     |  1 +
 4 files changed, 27 insertions(+), 29 deletions(-)

diff --git a/common.mk b/common.mk
index deb64c7..ea0c588 100644
--- a/common.mk
+++ b/common.mk
@@ -10,6 +10,13 @@ pkglibexecdir ?= $(libexecdir)/libretools
 # This is used when using sources grabbed from devtools
 edit = sed -e 's|m4_include(lib/\(.*\))|. $$(librelib \1)|'
 
+# Usage: $(call indent,FILENAME)
+# Command to auto-indent a file.
+indent = emacs --batch $1 \
+	--eval '(setq sh-basic-offset 8)' \
+	--eval '(indent-region (point-min) (point-max) nil)' \
+	-f save-buffer &>/dev/null
+
 # Usage <INPUT $(pofmt) >OUTPUT
 # Normalize a .po(t) file
 pofmt = msguniq -Fi
@@ -53,7 +60,7 @@ install_files += $(addprefix $(DESTDIR)$(bindir)/,$(progs)) \
                  $(addprefix $(DESTDIR)$(mandir)/man6/,$(filter %.6,$(mans))) \
                  $(addprefix $(DESTDIR)$(mandir)/man7/,$(filter %.7,$(mans))) \
                  $(addprefix $(DESTDIR)$(mandir)/man8/,$(filter %.8,$(mans)))
-clean_files += $(patsubst %.in,%,$(copy_files)) $(copy_files) $(mans) $(wildcard *.pot)
+clean_files += $(patsubst %.in,%,$(copy_files)) $(copy_files) $(mans) $(wildcard *.pot *.ugly* *~)
 
 pots  += $(filter-out $(no-pots) ,$(progs))
 pot_files += $(addsuffix .pot,$(pots))
@@ -79,10 +86,23 @@ build: PHONY $(build_files)
 	ronn --roff $(RONNFLAGS) < '$<' > '$@'
 %.html: %.ronn
 	ronn --html $(RONNFLAGS) < '$<' > '$@'
+
+
+# If we have a .patch file, the flow is:
+#     $(devtoolsdir)/%.in -> %.in + %.patch -> %.ugly -> %
+_do_patch = $(filter $(patsubst %.patch,%,$(wildcard *.patch)),$(patsubst %.in,%,$(copy_files)))
+%.ugly: %.in %.patch Makefile
+	cp $*.in $@
+	@echo 'PATCH $@ $*.patch'; patch $@ $*.patch
+$(_do_patch): %: %.ugly Makefile
+	@echo 'EDIT < $< > $@'; $(edit) <'$<' >'$@'
+	@echo 'INDENT $@'; $(call indent,$@)
+	$(if $(filter-out %.sh,$@),chmod 755 "$@")
+# Otherwise, the flow is just
+#     $(devtoolsdir)/%.in -> %.in -> %
 %: %.in
-	@echo "GEN $@"
-	@$(edit) <"$<" >"$@"
-	@chmod 755 "$@"
+	@echo 'EDIT < $< > $@'; $(edit) <"$<" >"$@"
+	$(if $(filter-out %.sh,$@),chmod 755 "$@")
 
 # Build ########################################################################
 
diff --git a/src/chroot-tools/.gitignore b/src/chroot-tools/.gitignore
index 80e1000..3f46ed2 100644
--- a/src/chroot-tools/.gitignore
+++ b/src/chroot-tools/.gitignore
@@ -1,5 +1,4 @@
 makechrootpkg.sh*
-!makechrootpkg.sh.patch
-
 arch-nspawn*
 mkarchroot*
+!*.patch
diff --git a/src/chroot-tools/Makefile b/src/chroot-tools/Makefile
index 97ca688..c49c4ac 100644
--- a/src/chroot-tools/Makefile
+++ b/src/chroot-tools/Makefile
@@ -9,37 +9,15 @@ libs = makechrootpkg.sh $(wildcard hooks-*.sh)
 pots = $(libexecs) $(libs)
 
 pkglibexecdir = $(libexecdir)/libretools/chroot
-clean_files = makechrootpkg.sh.ugly* *~
 include ../../common.mk
 
-# Usage: $(call indent,FILENAME)
-# Command to auto-indent a file.
-indent = emacs --batch $1 \
-	--eval '(setq sh-basic-offset 8)' \
-	--eval '(indent-region (point-min) (point-max) nil)' \
-	-f save-buffer &>/dev/null
-
-# makechrootpkg.sh is special, we patch it and do fancy stuff
-# The flow is:
-# $(devtoolsdir)/*.in -> *.sh.in + *.sh.patch -> *.sh.ugly -> *.sh
-
+# makechrootpkg.sh is created from a command, not a library
 makechrootpkg.sh.in: %.sh.in: $(devtoolsdir)/%.in
 	cp $< $@
-makechrootpkg.sh.ugly: %.ugly: %.in %.patch Makefile
-	cp $*.in $@
-	@echo 'PATCH $@ $*.patch'; patch $@ $*.patch
-makechrootpkg.sh: %: %.ugly Makefile
-	@echo 'EDIT < $< > $@'; $(edit) <'$<' >'$@'
-	@echo 'INDENT $@'; $(call indent,$@)
 
 mkarchroot: mkarchroot.in Makefile
 	@echo '< $< M4_EDIT | SED > $@'
 	@<'$<' $(edit) | sed -e 's|arch-nspawn|$$(librelib chroot/&)|' -e 's/pacstrap/env -i &/' >'$@'
 	@echo 'CHMOD $<'; chmod 755 "$@"
 
-archroot: %: %.in Makefile
-	@echo "GEN $@"
-	@$(edit) <"$<" >"$@"
-	@chmod 755 "$@"
-
 distcc-tool.pot: xgettext-keywords-sh+=--keyword=errusage
diff --git a/src/devtools/.gitignore b/src/devtools/.gitignore
index 097fcde..d669bbd 100644
--- a/src/devtools/.gitignore
+++ b/src/devtools/.gitignore
@@ -1,3 +1,4 @@
 *
 !Makefile
 !.gitignore
+!*.patch
-- 
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