Makefile: extract script to generate gitweb.js

Similar to the preceding commit, also extract the script to generate the
"gitweb.js" file. While the logic itself is trivial, it helps us avoid
duplication of logic across build systems and ensures that the build
systems will remain in sync with each other in case the logic ever needs
to change.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/gitweb/Makefile b/gitweb/Makefile
index 16a2ef2d1e5664d99f6f1d8ff4224c36769c55fb..d5748e93594eb6181269c2fe272bf7ef980cbe68 100644 (file)
--- a/gitweb/Makefile
+++ b/gitweb/Makefile
@@ -115,9 +115,10 @@ $(MAK_DIR_GITWEB)gitweb.cgi: $(MAK_DIR_GITWEB)gitweb.perl
        $(MAK_DIR_GITWEB)generate-gitweb-cgi.sh $(MAK_DIR_GITWEB)/GITWEB-BUILD-OPTIONS ./GIT-VERSION-FILE $< $@+ && \
        mv $@+ $@
 
+$(MAK_DIR_GITWEB)static/gitweb.js: $(MAK_DIR_GITWEB)generate-gitweb-js.sh
 $(MAK_DIR_GITWEB)static/gitweb.js: $(addprefix $(MAK_DIR_GITWEB),$(GITWEB_JSLIB_FILES))
        $(QUIET_GEN)$(RM) $@ $@+ && \
-       cat $^ >$@+ && \
+       $(MAK_DIR_GITWEB)generate-gitweb-js.sh $@+ $^ && \
        mv $@+ $@
 
 ### Installation rules

diff --git a/gitweb/generate-gitweb-js.sh b/gitweb/generate-gitweb-js.sh
new file mode 100755 (executable)
index 0000000..01bb22b
--- /dev/null
+++ b/gitweb/generate-gitweb-js.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+if test "$#" -lt 2
+then
+       echo >&2 "USAGE: $0 <OUTPUT> <INPUT>..."
+       exit 1
+fi
+
+OUTPUT="$1"
+shift
+
+cat "$@" >"$OUTPUT"