/usr/bin/apxs broken when apr15u-devel installed

[Mason Malone]

The /usr/bin/apxs Perl script is provided by the httpd24u-devel package, and is needed for building Apache extensions. It uses pkg-config to get the libdir of the apr-1 package, as follows:
   my $libdir = `pkg-config --variable=libdir apr-1`;

This returns an empty string if you have apr15u-devel installed, because its pkg-config file is named "apr15u-1.pc" rather than "apr-1.pc". The result is that you get the following error when executing apxs:
   cannot open /httpd/build/config_vars.mk: No such file or directory at /usr/bin/apxs line 214.

A workaround for this to symlink the *.pc files, like so:
   $ ln -s /usr/lib64/pkgconfig/apr15u-1.pc /usr/lib64/pkgconfig/apr-1.pc

Extra details:

$ uname -a
Linux www.jci.dev 2.6.32-504.1.3.el6.x86_64 #1 SMP Tue Nov 11 17:57:25 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

$ cat /etc/redhat-release
CentOS release 6.6 (Final)

$ yum list installed | egrep 'apr|httpd'
apr15u.x86_64 1.5.2-1.ius.centos6 @ius
apr15u-devel.x86_64 1.5.2-1.ius.centos6 @ius
apr15u-util.x86_64 1.5.4-3.ius.centos6 @ius
apr15u-util-devel.x86_64 1.5.4-3.ius.centos6 @ius
httpd24u.x86_64 2.4.12-5.ius.centos6 @ius
httpd24u-devel.x86_64 2.4.12-5.ius.centos6 @ius
httpd24u-filesystem.noarch 2.4.12-5.ius.centos6 @ius
httpd24u-tools.x86_64 2.4.12-5.ius.centos6 @ius

[Mason Malone (mason-r)]

Related issue: the /usr/lib64/httpd/build/config_vars.mk file (which is used by apxs and provided by http24u-devel) has the following lines:
    APR_CONFIG = /usr/bin/apr-1-config
    APU_CONFIG = /usr/bin/apu-1-config

These paths are incorrect if you have apr15u-devel install. They should be:
    APR_CONFIG = /usr/bin/apr15u-1-config
    APU_CONFIG = /usr/bin/apu15u-1-config

Workaround:
$ ln -s /usr/bin/apr15u-1-config /usr/bin/apr-1-config
$ ln -s /usr/bin/apu15u-1-config

[Carl George (carl.george)]

Hello Mason,

Thanks for the feedback. Give me some time to sort out how to correctly patch this so the symlinks aren't needed.

[Carl George (carl.george)]

I believe I have fixed these issues.

https://github.com/iuscommunity-pkg/httpd24u/commit/c23a52076fb5b71c7c295151af71a86d84145046

The build httpd24u-2.4.16-2.ius will move to our testing repos during tonight's automation. Once it does please test it and confirm if this fixes your apxs issue.

[Mason Malone (mason-r)]

I've confirmed that httpd24u-2.4.16-2.ius.centos6 in ius-testing fixes the issues I mentioned. Thank you!

[Carl George (carl.george)]

httpd24u-2.4.16-2.ius will move to the stable repositories during tonight's automation. It may take up to 24 hours to sync to all mirrors.