[Fontconfig-bugs] [Bug 69833] New: Incorrect SIZEOF_VOID_P and ALIGNOF_DOUBLE definitions causes nasty warnings on MacOSX when building fat libraries

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69833

          Priority: medium
            Bug ID: 69833
          Assignee: fontconfig-bugs at lists.freedesktop.org
           Summary: Incorrect SIZEOF_VOID_P and ALIGNOF_DOUBLE definitions
                    causes nasty warnings on MacOSX when building fat
                    libraries
        QA Contact: freedesktop at behdad.org
          Severity: enhancement
    Classification: Unclassified
                OS: Mac OS X (All)
          Reporter: dank at kegel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: library
           Product: fontconfig

Created attachment 86612
  --> https://bugs.freedesktop.org/attachment.cgi?id=86612&action=edit
Patch to select right values at compile time rather than configure time

I had trouble building fontconfig-2.10.95 as a universal library on MacOSX.

For completeness, my environment has

CC=gcc
CFLAGS=-O3 -g -arch i386 -arch x86_64 -isystem /opt/foo/include
CPP=/usr/bin/cpp
CXX=g++
CXXCPP=/usr/bin/cpp
CXXFLAGS=-O3 -g -arch i386 -arch x86_64 -isystem /opt/foo/include
LDFLAGS=-L/opt/oblong/deps/lib
OBJCFLAGS=-arch i386 -arch x86_64
PATH=/opt/foo/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin:/usr/X11/bin
PKG_CONFIG_PATH=/opt/foo/lib/pkgconfig

and the command I use is

./configure --prefix=/opt/foo --disable-dependency-tracking
--with-add-fonts=/Library/Fonts,~/Library/Fonts

This complains

In file included from fcint.h:29,
                 from fccache.c:26:
../config.h:8:1: warning: "ALIGNOF_DOUBLE" redefined
In file included from ../config.h:365,
                 from fccache.c:24:
../config-fixups.h:38:1: warning: this is the location of the previous
definition

Happily, the macports and homebrew folks had a patch ready for this issue; see
the script at
https://github.com/snakeyroc3/homebrew/commit/8cde20b7a8de828e5e094366629f12ae83aa96ea

I'll attach the patch.  It's 13 lines, and just defines SIZEOF_VOID_P and
ALIGNOF_DOUBLE properly.

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