Add submodules.sh and use it during builds

This adds a shell script which can be be used to initialize, list and
update submodules in a git repository. It reads the file .gitmodules
to find a mapping between submodule path and repository url for the
initial clone of all submodules.

The script is used during cgit builds to enable automatic download and
checkout of the git git repository.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 36 insertions, 13 deletions

diff --git a/Makefile b/Makefile
index 644914c..138f261 100644
--- a/Makefile
+++ b/Makefile
@@ -1,12 +1,11 @@
 CGIT_VERSION = 0.2
 
 prefix = /var/www/htdocs/cgit
-gitsrc = git
 
 SHA1_HEADER = <openssl/sha.h>
 
 CACHE_ROOT = /var/cache/cgit
-EXTLIBS = $(gitsrc)/libgit.a $(gitsrc)/xdiff/lib.a -lz -lcrypto
+EXTLIBS = git/libgit.a git/xdiff/lib.a -lz -lcrypto
 OBJECTS = shared.o cache.o parsing.o html.o ui-shared.o ui-repolist.o \
         ui-summary.o ui-log.o ui-view.o ui-tree.o ui-commit.o ui-diff.o \
         ui-snapshot.o ui-blob.o
@@ -17,28 +16,52 @@ ifdef DEBUG
         CFLAGS += -g
 endif
 
-CFLAGS += -I$(gitsrc) -DSHA1_HEADER='$(SHA1_HEADER)'
+CFLAGS += -Igit -DSHA1_HEADER='$(SHA1_HEADER)'
 
+
+
+
+#
+# basic build rules
+#
 all: cgit
 
+cgit: cgit.c cgit.h $(OBJECTS)
+        $(CC) $(CFLAGS) -DCGIT_VERSION='"$(CGIT_VERSION)"' cgit.c -o cgit \
+                $(OBJECTS) $(EXTLIBS)
+
+$(OBJECTS): cgit.h git/libgit.a
+
+git/libgit.a:
+        ./submodules.sh -i
+        $(MAKE) -C git
+
+#
+# phony targets
+#
 install: all clean-cache
         mkdir -p $(prefix)
         install cgit $(prefix)/cgit.cgi
         install cgit.css $(prefix)/cgit.css
 
-cgit: cgit.c cgit.h $(OBJECTS) $(gitsrc)/libgit.a
-        $(CC) $(CFLAGS) -DCGIT_VERSION='"$(CGIT_VERSION)"' cgit.c -o cgit \
-                $(OBJECTS) $(EXTLIBS)
-
-$(OBJECTS): cgit.h
+clean-cgit:
+        rm -f cgit *.o
 
-$(gitsrc)/libgit.a:
-        $(MAKE) -C $(gitsrc)
+distclean-cgit: clean-cgit
+        git clean -d -x
 
+clean-sub:
+        $(MAKE) -C git clean
 
-.PHONY: clean
-clean:
-        rm -f cgit *.o
+distclean-sub: clean-sub
+        $(shell cd git && git clean -d -x)
 
 clean-cache:
         rm -rf $(CACHE_ROOT)/*
+
+clean: clean-cgit clean-sub
+
+distclean: distclean-cgit distclean-sub
+
+.PHONY: all install clean clean-cgit clean-sub clean-cache \
+        distclean distclean-cgit distclean-sub