1 | # =========================================================================== |
---|
2 | # https://www.gnu.org/software/autoconf-archive/ax_prog_cc_for_build.html |
---|
3 | # =========================================================================== |
---|
4 | # |
---|
5 | # SYNOPSIS |
---|
6 | # |
---|
7 | # AX_PROG_CC_FOR_BUILD |
---|
8 | # |
---|
9 | # DESCRIPTION |
---|
10 | # |
---|
11 | # This macro searches for a C compiler that generates native executables, |
---|
12 | # that is a C compiler that surely is not a cross-compiler. This can be |
---|
13 | # useful if you have to generate source code at compile-time like for |
---|
14 | # example GCC does. |
---|
15 | # |
---|
16 | # The macro sets the CC_FOR_BUILD and CPP_FOR_BUILD macros to anything |
---|
17 | # needed to compile or link (CC_FOR_BUILD) and preprocess (CPP_FOR_BUILD). |
---|
18 | # The value of these variables can be overridden by the user by specifying |
---|
19 | # a compiler with an environment variable (like you do for standard CC). |
---|
20 | # |
---|
21 | # It also sets BUILD_EXEEXT and BUILD_OBJEXT to the executable and object |
---|
22 | # file extensions for the build platform, and GCC_FOR_BUILD to `yes' if |
---|
23 | # the compiler we found is GCC. All these variables but GCC_FOR_BUILD are |
---|
24 | # substituted in the Makefile. |
---|
25 | # |
---|
26 | # LICENSE |
---|
27 | # |
---|
28 | # Copyright (c) 2008 Paolo Bonzini <bonzini@gnu.org> |
---|
29 | # |
---|
30 | # Copying and distribution of this file, with or without modification, are |
---|
31 | # permitted in any medium without royalty provided the copyright notice |
---|
32 | # and this notice are preserved. This file is offered as-is, without any |
---|
33 | # warranty. |
---|
34 | |
---|
35 | #serial 18 |
---|
36 | |
---|
37 | AU_ALIAS([AC_PROG_CC_FOR_BUILD], [AX_PROG_CC_FOR_BUILD]) |
---|
38 | AC_DEFUN([AX_PROG_CC_FOR_BUILD], [dnl |
---|
39 | AC_REQUIRE([AC_PROG_CC])dnl |
---|
40 | AC_REQUIRE([AC_PROG_CPP])dnl |
---|
41 | AC_REQUIRE([AC_CANONICAL_BUILD])dnl |
---|
42 | |
---|
43 | dnl Use the standard macros, but make them use other variable names |
---|
44 | dnl |
---|
45 | pushdef([ac_cv_prog_CPP], ac_cv_build_prog_CPP)dnl |
---|
46 | pushdef([ac_cv_prog_cc_c89], ac_cv_build_prog_cc_c89)dnl |
---|
47 | pushdef([ac_cv_c_compiler_gnu], ac_cv_build_prog_gcc)dnl |
---|
48 | pushdef([ac_cv_prog_cc_works], ac_cv_build_prog_cc_works)dnl |
---|
49 | pushdef([ac_cv_prog_cc_cross], ac_cv_build_prog_cc_cross)dnl |
---|
50 | pushdef([ac_cv_prog_cc_g], ac_cv_build_prog_cc_g)dnl |
---|
51 | pushdef([ac_cv_c_compiler_gnu], ac_cv_build_c_compiler_gnu)dnl |
---|
52 | pushdef([ac_cv_exeext], ac_cv_build_exeext)dnl |
---|
53 | pushdef([ac_cv_objext], ac_cv_build_objext)dnl |
---|
54 | pushdef([ac_exeext], ac_build_exeext)dnl |
---|
55 | pushdef([ac_objext], ac_build_objext)dnl |
---|
56 | pushdef([CC], CC_FOR_BUILD)dnl |
---|
57 | pushdef([CPP], CPP_FOR_BUILD)dnl |
---|
58 | pushdef([GCC], GCC_FOR_BUILD)dnl |
---|
59 | pushdef([CFLAGS], CFLAGS_FOR_BUILD)dnl |
---|
60 | pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl |
---|
61 | pushdef([EXEEXT], BUILD_EXEEXT)dnl |
---|
62 | pushdef([LDFLAGS], LDFLAGS_FOR_BUILD)dnl |
---|
63 | pushdef([OBJEXT], BUILD_OBJEXT)dnl |
---|
64 | pushdef([host], build)dnl |
---|
65 | pushdef([host_alias], build_alias)dnl |
---|
66 | pushdef([host_cpu], build_cpu)dnl |
---|
67 | pushdef([host_vendor], build_vendor)dnl |
---|
68 | pushdef([host_os], build_os)dnl |
---|
69 | pushdef([ac_cv_host], ac_cv_build)dnl |
---|
70 | pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl |
---|
71 | pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl |
---|
72 | pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl |
---|
73 | pushdef([ac_cv_host_os], ac_cv_build_os)dnl |
---|
74 | pushdef([ac_tool_prefix], ac_build_tool_prefix)dnl |
---|
75 | pushdef([am_cv_CC_dependencies_compiler_type], am_cv_build_CC_dependencies_compiler_type)dnl |
---|
76 | pushdef([am_cv_prog_cc_c_o], am_cv_build_prog_cc_c_o)dnl |
---|
77 | pushdef([cross_compiling], cross_compiling_build)dnl |
---|
78 | |
---|
79 | cross_compiling_build=no |
---|
80 | |
---|
81 | ac_build_tool_prefix= |
---|
82 | AS_IF([test -n "$build"], [ac_build_tool_prefix="$build-"], |
---|
83 | [test -n "$build_alias"],[ac_build_tool_prefix="$build_alias-"]) |
---|
84 | |
---|
85 | AC_LANG_PUSH([C]) |
---|
86 | AC_PROG_CC |
---|
87 | _AC_COMPILER_EXEEXT |
---|
88 | _AC_COMPILER_OBJEXT |
---|
89 | AC_PROG_CPP |
---|
90 | |
---|
91 | dnl Restore the old definitions |
---|
92 | dnl |
---|
93 | popdef([cross_compiling])dnl |
---|
94 | popdef([am_cv_prog_cc_c_o])dnl |
---|
95 | popdef([am_cv_CC_dependencies_compiler_type])dnl |
---|
96 | popdef([ac_tool_prefix])dnl |
---|
97 | popdef([ac_cv_host_os])dnl |
---|
98 | popdef([ac_cv_host_vendor])dnl |
---|
99 | popdef([ac_cv_host_cpu])dnl |
---|
100 | popdef([ac_cv_host_alias])dnl |
---|
101 | popdef([ac_cv_host])dnl |
---|
102 | popdef([host_os])dnl |
---|
103 | popdef([host_vendor])dnl |
---|
104 | popdef([host_cpu])dnl |
---|
105 | popdef([host_alias])dnl |
---|
106 | popdef([host])dnl |
---|
107 | popdef([OBJEXT])dnl |
---|
108 | popdef([LDFLAGS])dnl |
---|
109 | popdef([EXEEXT])dnl |
---|
110 | popdef([CPPFLAGS])dnl |
---|
111 | popdef([CFLAGS])dnl |
---|
112 | popdef([GCC])dnl |
---|
113 | popdef([CPP])dnl |
---|
114 | popdef([CC])dnl |
---|
115 | popdef([ac_objext])dnl |
---|
116 | popdef([ac_exeext])dnl |
---|
117 | popdef([ac_cv_objext])dnl |
---|
118 | popdef([ac_cv_exeext])dnl |
---|
119 | popdef([ac_cv_c_compiler_gnu])dnl |
---|
120 | popdef([ac_cv_prog_cc_g])dnl |
---|
121 | popdef([ac_cv_prog_cc_cross])dnl |
---|
122 | popdef([ac_cv_prog_cc_works])dnl |
---|
123 | popdef([ac_cv_prog_cc_c89])dnl |
---|
124 | popdef([ac_cv_c_compiler_gnu])dnl |
---|
125 | popdef([ac_cv_prog_CPP])dnl |
---|
126 | |
---|
127 | dnl restore global variables ac_ext, ac_cpp, ac_compile, |
---|
128 | dnl ac_link, ac_compiler_gnu (dependant on the current |
---|
129 | dnl language after popping): |
---|
130 | AC_LANG_POP([C]) |
---|
131 | |
---|
132 | dnl Finally, set Makefile variables |
---|
133 | dnl |
---|
134 | AC_SUBST(BUILD_EXEEXT)dnl |
---|
135 | AC_SUBST(BUILD_OBJEXT)dnl |
---|
136 | AC_SUBST([CFLAGS_FOR_BUILD])dnl |
---|
137 | AC_SUBST([CPPFLAGS_FOR_BUILD])dnl |
---|
138 | AC_SUBST([LDFLAGS_FOR_BUILD])dnl |
---|
139 | ]) |
---|