Bugzilla Bug 35570

The local autoconf macros used by unixODBC 2.2.6 include QT configuration
macros.

However, those QT macros are dependent on the AC_PATH_X autoconf macro (that
locates the X include and library directories).

Without this configure.in macro, the --enable-gui (enabled by 'use qt') will
fail to configure unixODBC-2.2.6 due to its failure to locate the X includes.

Reproducible: Always
Steps to Reproduce:
1. export use="qt"
2. emerge dev-db/unixODBC-2.2.6
Actual Results:  
...
checking for socket in -lsocket... no
checking for gethostbyname in -lnsl... yes
checking for X... configure: error: Can't find X includes. Please check your
installation and add the correct paths!

!!! ERROR: dev-db/unixODBC-2.2.6 failed.
!!! Function src_compile, Line 32, Exitcode 1
!!! (no error message)

Expected Results:  
...
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking for X... libraries /usr/X11R6/lib, headers
checking for egrep... grep -E
...

Portage 2.0.49-r15 (default-x86-1.4, gcc-3.2.3, glibc-2.3.2-r3, 2.4.23)
=================================================================
System uname: 2.4.23 i686 AMD Athlon(tm) XP 2800+
Gentoo Base System version 1.4.3.10p1
ccache version 2.3 [enabled]
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CFLAGS="-march=athlon-xp -O3 -fomit-frame-pointer -mfpmath=sse,387 -pipe"
CHOST="i686-pc-linux-gnu"
COMPILER="gcc3"
CONFIG_PROTECT="/etc /var/qmail/control /usr/kde/2/share/config
/usr/kde/3/share/config /usr/X11R6/lib/X11/xkb /usr/kde/3.1/share/config
/usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/
/usr/share/config"
CONFIG_PROTECT_MASK="/etc/gconf /etc/env.d"
CXXFLAGS="-O2 -mcpu=i686 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="sandbox autoaddcvs ccache keepwork"
GENTOO_MIRRORS="ftp://ftp.ussg.iu.edu/pub/linux/gentoo
http://gentoo.seren.com/gentoo ftp://ftp.gtlib.cc.gatech.edu/pub/gentoo
http://ftp.easynet.nl/mirror/gentoo/ ftp://gentoo.noved.org/"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.namerica.gentoo.org/gentoo-portage"
USE="x86 oss avi crypt cups encode foomaticdb gif gtk2 jpeg libg++ mad mpeg
ncurses nls pdflib png quicktime spell truetype xml2 xmms xv zlib alsa gdbm
berkdb slang readline arts tetex aalib bonobo svga tcltk java guile mysql X sdl
gpm tcpd pam libwww ssl perl python esd imlib oggvorbis gnome gtk qt kde motif
opengl mozilla cdr 3dnow acpi acpi4linux apache2 artswrappersuid cscope dvd
evms2 evo innodb maildir mmx moznocompose moznoirc moznomail mozsvg odbc php
samba skey sse type1 usb vim-with-x X509 xchattext xml -apm -mikmod"

Created an attachment (id=22015) [details]
configure.in patch that resolves this defect's described issue

I am using this patch via a local unixODBC-2.2.6-r1 ebuild to address this
issue on my primary workstation.

Created an attachment (id=22016) [details]
an example unixODBC-2.2.6-r1.ebuild that patches configure.in

This is the ebuild I prepared that patches unixODBC-2.2.6 to address its
failure to configure X when its --enable-gui (via use 'qt') is configured.

committed