[MacPorts] #14102: fontconfig build fails if "head" is missing or unusable

[MacPorts]

#14102: fontconfig build fails if "head" is missing or unusable
-------------------------------------+--------------------------------------
 Reporter:  ryandesign at macports.org  |       Owner:  ryandesign at macports.org
     Type:  defect                   |      Status:  new                    
 Priority:  Normal                   |   Milestone:  Port Bugs              
Component:  ports                    |     Version:  1.6.0                  
 Keywords:                           |  
-------------------------------------+--------------------------------------
 If the `/usr/bin/head` program is missing or unusable, or if an unusable
 `head` program is listed first in the `PATH`, fontconfig fails to build
 with this unintuitive error:

 {{{
 $ sudo port upgrade fontconfig
 --->  Building fontconfig with target all
 Error: Target org.macports.build returned: shell command " cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_graphics_fontconfig/work/fontconfig-2.5.0"
 && make all " returned error 2
 Command output: fcaliastail.h:520:2: error: #endif without #if
 fcaliastail.h:522: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:523:2: error: #endif without #if
 fcaliastail.h:525: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:526:2: error: #endif without #if
 fcaliastail.h:528: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:529:2: error: #endif without #if
 fcaliastail.h:531: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:532:2: error: #endif without #if
 fcaliastail.h:534: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:535:2: error: #endif without #if
 fcaliastail.h:537: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:538:2: error: #endif without #if
 fcaliastail.h:540: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:541:2: error: #endif without #if
 fcaliastail.h:543: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:544:2: error: #endif without #if
 fcaliastail.h:546: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:547:2: error: #endif without #if
 fcaliastail.h:549: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:550:2: error: #endif without #if
 fcaliastail.h:552: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:553:2: error: #endif without #if
 fcaliastail.h:555: error: only weak aliases are supported in this
 configuration
 fcaliastail.h:556:2: error: #endif without #if
 fcaliastail.h:557:2: error: #endif without #if
 make[3]: *** [fcatomic.lo] Error 1
 make[2]: *** [all] Error 2
 make[1]: *** [all-recursive] Error 1
 make: *** [all] Error 2

 Error: Unable to upgrade port: 1
 $
 }}}

 `/usr/bin/head` might be unusable if the user manually installed an old
 version of libwww-perl, which would have tried to install `/usr/bin/HEAD`,
 which, on a case-insensitive filesystem like the default Mac HFS+
 filesystem, would have collided with and overwritten `/usr/bin/head`.

 Another `head` program might be in the user's `PATH` if the user installed
 libwww-perl to another prefix that's in their `PATH` before `/usr/bin`.

 This problem was reported [http://lists.macosforge.org/pipermail/macports-
 users/2007-January/001341.html on macports-users in January 2007] and
 [ticket:12251 in this ticket in June 2007] and
 [http://www.ghostwheel.com/merlin/Personal/notes/2007/11/28/os-x-unix-and-
 dont-you-forget-it/ on someone's blog in November 2007] and
 [http://lists.macosforge.org/pipermail/macports-
 users/2007-December/007434.html on macports-users in December 2007] and
 [ticket:14093 in this ticket in January 2008].

 It would be nice if there were a more-intelligible error message for this
 situation.

-- 
Ticket URL: <http://trac.macosforge.org/projects/macports/ticket/14102>
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