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Re: bug#14560: C Compilation variables present in output Makefiles uncon

From: Ralf Corsepius
Subject: Re: bug#14560: C Compilation variables present in output Makefiles unconditionally
Date: Tue, 11 Jun 2013 13:29:12 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6

On 06/05/2013 12:03 PM, Stefano Lattarini wrote:
[+cc bug-automake, so this will be registered in the bug tracker]

On 06/05/2013 07:16 AM, Ralf Corsepius wrote:
On 06/03/2013 09:14 PM, Stefano Lattarini wrote:
We are pleased to announce the GNU Automake 1.13.3 maintenance release.

When comparing automake-1.13.2 generated Makefile.ins against
automake-1.13.3 generated, in projects which are
_not_ using "c" I am observing changes like this one below:

--- a/
+++ b/
@@ -109,6 +109,18 @@ AM_V_at = $(address@hidden@)
  am__v_at_ = $(address@hidden@)
  am__v_at_0 = @
  am__v_at_1 =
+AM_V_CC = $(address@hidden@)
+am__v_CC_ = $(address@hidden@)
+am__v_CC_0 = @echo "  CC      " $@;
+am__v_CC_1 =
+CCLD = $(CC)
+AM_V_CCLD = $(address@hidden@)
+am__v_CCLD_ = $(address@hidden@)
+am__v_CCLD_0 = @echo "  CCLD    " $@;
+am__v_CCLD_1 =
  AM_V_DVIPS = $(address@hidden@)

Yeah, this shouldn't happen.  Not a serious regression thankfully,
but still unpleasant.

So far, I havn't had sufficient time to implement a simple reproducer,
but I am inclined to believe, automake-1.13.3 inserts c-compiler
related vars into Makefile.ins, in cases no C-compiler is being used.

Please find a reproducer enclosed below.

Untar the tarball and run autoreconf -fi.
Compare the files being generated by
against those being generated by

From what I can gather, something seems broken with automake-1.13.3's SUFFIX handling. Seems to me as is these extraneous variables are being generated when a Makefile use more than one suffix rule.


Attachment: am-bug14560-20130611.tar.xz
Description: application/xz

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