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Re: Fwd: BUG report using autoconf…
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From: |
Eric Blake |
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Subject: |
Re: Fwd: BUG report using autoconf… |
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Date: |
Mon, 5 Feb 2018 08:17:05 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 |
On 02/04/2018 04:58 PM, aotto wrote:
> the following line create a BUG in autoconf
>> # if 'CFLAGS' is NOT set, than macro 'AC_PROG_CC' set 'CFLAGS=-g -O2'
> in seems that a M4-MACRO in COMMENT is a problem.
>
>
> # if 'CFLAGS' is NOT set, than macro 'AC_PROG_CC' set 'CFLAGS=-g -O2'
> CFLAGS="-Wall -Wcast-align"
> CXXFLAGS=""
> #> autoconf
> configure.ac:79: error: possibly undefined macro: AC_PROG_CC
> If this token and others are legitimate, please use m4_pattern_allow.
> See the Autoconf documentation.
You are correct that autoconf's detection of unexpanded macros is
unaware of comment syntax. Would you like to prepare a patch to the
post-processing pass that looks for unexpanded macros to first filter
out all comment lines?
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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