gtk3 @3.24.23_0+x11.: fatal error: 'gio/gdesktopappinfo.h' file not found as glib2 no longer provides it on 10.6 i386

[ryandesign (Ryan Carsten Schmidt)]

This build failure happens on 10.6 i386 only (not on 10.6 x86_64, not on 10.7 or later versions):

​https://build.macports.org/builders/ports-10.6_i386-builder/builds/26507/steps/install-port/logs/stdio

gdkapplaunchcontext-x11.c:30:10: fatal error: 'gio/gdesktopappinfo.h' file not found
#include <gio/gdesktopappinfo.h>
         ^~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make[4]: *** [gdkapplaunchcontext-x11.lo] Error 1

We did not have this problem with gtk3 @3.24.22_0+x11.

I don't know if this is really a new problem in 3.24.23 that only affects 10.6 i386, or if something else changed coincidentally at the same time.

[ryandesign (Ryan Carsten Schmidt)]

Similar error reported in #54379 but that was on OS X 10.10 and was reported no longer to be happening 4 years ago.

[kencu (Ken)]

The issue seems to really be with glib2, which for some as-yet-unknown reason no longer provides the file

gio/gdesktopappinfo.h

on 10.6 i386 whereas it does provide that file on other systems, and apparently used to provide it on 10.6 i386 but now does not.

I don't know why that is happening, but I did notice that glib2-devel does provide that file on 10.6 i386, so gtk3 can build through if glib2-devel is installed.

As an update of glib2 to glib2-devel seems impending, it is possible that it might be most convenient to just do that rather than sort out why glib2 is no longer providing the missing file.

[kencu (Ken)]

It seems to have something to do with the fact that during the build of glib2 Cocoa support is not found on i386 10.6:

checking for Mac OS X Carbon support... no
checking for Mac OS X Cocoa support... no

and our patch for glib2 seems to need Cocoa enabled to add the gdesktopappinfo.h header:

--- gio/Makefile.am.orig	2019-01-21 07:38:50.000000000 -0600
+++ gio/Makefile.am	2019-01-30 10:36:31.000000000 -0600
@@ -255,9 +255,13 @@
 if OS_UNIX
 platform_libadd += xdgmime/libxdgmime.la
 platform_deps += xdgmime/libxdgmime.la
-if !OS_COCOA
+if OS_COCOA
+if APPINFO_IMPL_NATIVE
+appinfo_headers += gosxappinfo.h
+else
 appinfo_headers += gdesktopappinfo.h
 endif
+endif

So why this doesn't work now, or how it ever worked, is still an open question.

[kencu (Ken)]

[4008d825550f7545a4fdd9f06e3633990ab6c625/macports-ports]