177/376: Improved support for building JARs

[Ludovic Courtès]

civodul pushed a commit to tag 1.8
in repository guix.

commit 44e7e3bb9b36bca7023d207c51b7380b78ccfc4c
Author: Eelco Dolstra <address@hidden>
Date:   Thu Sep 11 15:28:30 2014 +0200

    Improved support for building JARs
---
 jars.mk |    9 +++++++--
 lib.mk  |    5 +++++
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/jars.mk b/jars.mk
index 99470f3..186a81d 100644
--- a/jars.mk
+++ b/jars.mk
@@ -1,4 +1,5 @@
 define build-jar
+
   $(1)_NAME ?= $(1)
 
   _d := $$(strip $$($(1)_DIR))
@@ -7,10 +8,14 @@ define build-jar
 
   $(1)_TMPDIR := $$(_d)/.$$($(1)_NAME).jar.tmp
 
-  $$($(1)_PATH): $$($(1)_SOURCES)
+  _jars := $$(foreach jar, $$($(1)_JARS), $$($$(jar)_PATH))
+
+  $$($(1)_PATH): $$($(1)_SOURCES) $$(_jars)
        @rm -rf $$($(1)_TMPDIR)
        @mkdir -p $$($(1)_TMPDIR)
-       $$(trace-javac) javac $(GLOBAL_JAVACFLAGS) $$($(1)_JAVACFLAGS) -d 
$$($(1)_TMPDIR) $$($(1)_SOURCES)
+       $$(trace-javac) javac $(GLOBAL_JAVACFLAGS) $$($(1)_JAVACFLAGS) -d 
$$($(1)_TMPDIR) \
+         $$(foreach fn, $$($(1)_SOURCES), '$$(fn)') \
+         -cp "$$(subst $$(space),,$$(foreach 
jar,$$($(1)_JARS),$$($$(jar)_PATH):))$$$$CLASSPATH"
        $$(trace-jar) jar cf $$($(1)_PATH) -C $$($(1)_TMPDIR) .
        @rm -rf $$($(1)_TMPDIR)
 
diff --git a/lib.mk b/lib.mk
index aa92d8d..16a43f4 100644
--- a/lib.mk
+++ b/lib.mk
@@ -14,6 +14,11 @@ dist-files :=
 OS = $(shell uname -s)
 
 
+# Hack to define a literal space.
+space :=
+space +=
+
+
 # Default installation paths.
 prefix ?= /usr/local
 libdir ?= $(prefix)/lib