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1 # multiarch.m4 serial 5 | 1 # multiarch.m4 serial 7 |
2 dnl Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation, Inc. | 2 dnl Copyright (C) 2008-2012 Free Software Foundation, Inc. |
3 dnl This file is free software; the Free Software Foundation | 3 dnl This file is free software; the Free Software Foundation |
4 dnl gives unlimited permission to copy and/or distribute it, | 4 dnl gives unlimited permission to copy and/or distribute it, |
5 dnl with or without modifications, as long as this notice is preserved. | 5 dnl with or without modifications, as long as this notice is preserved. |
6 | 6 |
7 # Determine whether the compiler is or may be producing universal binaries. | 7 # Determine whether the compiler is or may be producing universal binaries. |
8 # | 8 # |
9 # On MacOS X 10.5 and later systems, the user can create libraries and | 9 # On Mac OS X 10.5 and later systems, the user can create libraries and |
10 # executables that work on multiple system types--known as "fat" or | 10 # executables that work on multiple system types--known as "fat" or |
11 # "universal" binaries--by specifying multiple '-arch' options to the | 11 # "universal" binaries--by specifying multiple '-arch' options to the |
12 # compiler but only a single '-arch' option to the preprocessor. Like | 12 # compiler but only a single '-arch' option to the preprocessor. Like |
13 # this: | 13 # this: |
14 # | 14 # |
15 # ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ | 15 # ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ |
16 # CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ | 16 # CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ |
17 # CPP="gcc -E" CXXCPP="g++ -E" | 17 # CPP="gcc -E" CXXCPP="g++ -E" |
18 # | 18 # |
19 # Detect this situation and set the macro AA_APPLE_UNIVERSAL_BUILD at the | 19 # Detect this situation and set APPLE_UNIVERSAL_BUILD accordingly. |
20 # beginning of config.h and set APPLE_UNIVERSAL_BUILD accordingly. | |
21 | 20 |
22 AC_DEFUN_ONCE([gl_MULTIARCH], | 21 AC_DEFUN_ONCE([gl_MULTIARCH], |
23 [ | 22 [ |
24 dnl Code similar to autoconf-2.63 AC_C_BIGENDIAN. | 23 dnl Code similar to autoconf-2.63 AC_C_BIGENDIAN. |
25 gl_cv_c_multiarch=no | 24 gl_cv_c_multiarch=no |
26 AC_COMPILE_IFELSE( | 25 AC_COMPILE_IFELSE( |
27 [AC_LANG_SOURCE( | 26 [AC_LANG_SOURCE( |
28 [[#ifndef __APPLE_CC__ | 27 [[#ifndef __APPLE_CC__ |
29 not a universal capable compiler | 28 not a universal capable compiler |
30 #endif | 29 #endif |
(...skipping 17 matching lines...) Expand all Loading... |
48 esac | 47 esac |
49 prev= | 48 prev= |
50 else | 49 else |
51 if test "x$word" = "x-arch"; then | 50 if test "x$word" = "x-arch"; then |
52 prev=arch | 51 prev=arch |
53 fi | 52 fi |
54 fi | 53 fi |
55 done | 54 done |
56 ]) | 55 ]) |
57 if test $gl_cv_c_multiarch = yes; then | 56 if test $gl_cv_c_multiarch = yes; then |
58 AC_DEFINE([AA_APPLE_UNIVERSAL_BUILD], [1], | |
59 [Define if the compiler is building for multiple architectures of Apple pl
atforms at once.]) | |
60 APPLE_UNIVERSAL_BUILD=1 | 57 APPLE_UNIVERSAL_BUILD=1 |
61 else | 58 else |
62 APPLE_UNIVERSAL_BUILD=0 | 59 APPLE_UNIVERSAL_BUILD=0 |
63 fi | 60 fi |
64 AC_SUBST([APPLE_UNIVERSAL_BUILD]) | 61 AC_SUBST([APPLE_UNIVERSAL_BUILD]) |
65 ]) | 62 ]) |
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