2018-11-13 16:53 CET

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IDProjectCategoryView StatusLast Update
0004055libextractorbuild systempublic2018-07-12 22:44
Assigned Tobeberking 
PlatformDebianOSOS Version
Product Version1.5 
Target Version1.8Fixed in Version1.8 
Summary0004055: configure.ac messes up with user variables CFLAGS, CPPFLAGS, LIBS and LDFLAGS and generate wrong pkgconfig files
Descriptionconfigure.ac messes up with user variables CFLAGS, CPPFLAGS, LIBS and LDFLAGS.
Since these are used to generate pkgconfig files, the user flags are wrongly passed to libextractor.pc (see on Debian -D_FORTIFY_SOURCE=2).

configure.ac should use AM_CFLAGS and friends, which are then passed to automake and used by modern version of AX_CREATE_PKGCONFIG_INFO.

See https://www.gnu.org/software/autoconf/manual/autoconf-2.66/html_node/Preset-Output-Variables.html
> Sometimes package developers are tempted to set user variables such as CFLAGS
> because it appears to make their job easier. However, the package itself
> should never set a user variable, particularly not to include switches that
> are required for proper compilation of the package. Since these variables are
> documented as being for the package builder, that person rightfully expects
> to be able to override any of these variables at build time. If the package
> developer needs to add switches without interfering with the user, the proper
> way to do that is to introduce an additional variable. Automake makes this
> easy by introducing AM_CFLAGS (see Flag Variables Ordering), but the concept
> is the same even if Automake is not used.
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Christian Grothoff (manager)

Tried to fix this in SVN 36667. Could you please let me know if this fixes it for you?


beberking (developer)

Thanks for the patch. Unfortunetaly it does not work yet. I was hoping to investigate and help on this issue, but I am no autoconf guru...

I think we should at least update AX_CREATE_PKGCONFIG_INFO to the last version (but this is not enough).

The following test shows the issue:
autoreconf -f -i
CPPFLAGS='-Wdate-time -D_FORTIFY_SOURCE=2' ./configure

At the line "checking our pkgconfig cppflags...", version 1.3 gives wrongly -Wdate-time -D_FORTIFY_SOURCE=2 and gives (which is right) all the necessary includes.
With the fix from svn 36667, it gives only -Wdate-time -D_FORTIFY_SOURCE=2, but no includes.

I will try to investigate this more in the next week-end.



beberking (developer)

Thanks to Sven Joachim for pointing this out. By updating AX_CREATE_PKGCONFIG_INFO to the last version, this seems to be fixed.

Could you please update it according to http://git.savannah.nongnu.org/cgit/autoconf-archive.git/tree/m4/ax_create_pkgconfig_info.m4


Christian Grothoff (manager)

Fixed now, sadly just saw your comment after pushing 1.7. Will be in 1.8 though.

-Issue History
Date Modified Username Field Change
2015-11-15 18:20 beberking New Issue
2015-11-17 08:06 Christian Grothoff Assigned To => Christian Grothoff
2015-11-17 08:06 Christian Grothoff Status new => assigned
2015-11-17 08:42 Christian Grothoff Note Added: 0009909
2016-05-02 09:14 Christian Grothoff Assigned To Christian Grothoff => beberking
2016-05-02 09:14 Christian Grothoff Status assigned => feedback
2016-05-02 23:21 beberking Note Added: 0010608
2016-05-02 23:21 beberking Status feedback => assigned
2017-09-24 10:05 beberking Note Added: 0012430
2018-07-12 22:44 Christian Grothoff Note Added: 0013142
2018-07-12 22:44 Christian Grothoff Status assigned => resolved
2018-07-12 22:44 Christian Grothoff Resolution open => fixed
2018-07-12 22:44 Christian Grothoff Fixed in Version => 1.8
2018-07-12 22:44 Christian Grothoff Product Version => 1.5
2018-07-12 22:44 Christian Grothoff Target Version => 1.8
+Issue History