From: Bruno Haible <bruno@clisp.org>
Date: Mon, 17 Feb 2003 19:41:40 +0000 (+0000)
Subject: Old notes about VPATH.
X-Git-Tag: v0.12~260
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9deecd4ee9e9d82813acfff7386b06042ae5d88a;p=thirdparty%2Fgettext.git

Old notes about VPATH.
---

diff --git a/Admin/vpath b/Admin/vpath
new file mode 100644
index 000000000..e8a13f95e
--- /dev/null
+++ b/Admin/vpath
@@ -0,0 +1,18 @@
+Q: gettext's Makefiles don't support VPATH.
+
+A: It's some vendors' "make" which doesn't support VPATH.
+
+   1) GNU make supports VPATH with both .c.o and %.o:%.c rules.
+
+   2) Solaris make should not be used with VPATH at all, as it randomly
+      changes Makefile variables.
+
+   3) FreeBSD make does not support %.o:%.c rules at all. For the
+      remaining .c.o rules VPATH is taken into account. For
+      additional dependencies like "foo.o : bar.c" it is not.
+
+   Since %.o:%.c rules are not portable, GNU package Makefiles
+   shouldn't use them. Only .c.o rules. And then gettext's Makefiles
+   should work with GNU make and with FreeBSD make. But Solaris make
+   is not supportable with VPATH.
+