1#---------------------------------------------------------------------------
2#
3# xc-cc-check.m4
4#
5# Copyright (c) 2013 - 2020, Daniel Stenberg <daniel@haxx.se>
6#
7# Permission to use, copy, modify, and distribute this software for any
8# purpose with or without fee is hereby granted, provided that the above
9# copyright notice and this permission notice appear in all copies.
10#
11# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18#
19#---------------------------------------------------------------------------
20
21# serial 1
22
23
24dnl _XC_PROG_CC_PREAMBLE
25dnl -------------------------------------------------
26dnl Private macro.
27
28AC_DEFUN([_XC_PROG_CC_PREAMBLE], [
29  xc_prog_cc_prev_IFS=$IFS
30  xc_prog_cc_prev_LIBS=$LIBS
31  xc_prog_cc_prev_CFLAGS=$CFLAGS
32  xc_prog_cc_prev_LDFLAGS=$LDFLAGS
33  xc_prog_cc_prev_CPPFLAGS=$CPPFLAGS
34])
35
36
37dnl _XC_PROG_CC_POSTLUDE
38dnl -------------------------------------------------
39dnl Private macro.
40
41AC_DEFUN([_XC_PROG_CC_POSTLUDE], [
42  IFS=$xc_prog_cc_prev_IFS
43  LIBS=$xc_prog_cc_prev_LIBS
44  CFLAGS=$xc_prog_cc_prev_CFLAGS
45  LDFLAGS=$xc_prog_cc_prev_LDFLAGS
46  CPPFLAGS=$xc_prog_cc_prev_CPPFLAGS
47  AC_SUBST([CC])dnl
48  AC_SUBST([CPP])dnl
49  AC_SUBST([LIBS])dnl
50  AC_SUBST([CFLAGS])dnl
51  AC_SUBST([LDFLAGS])dnl
52  AC_SUBST([CPPFLAGS])dnl
53])
54
55
56dnl _XC_PROG_CC
57dnl -------------------------------------------------
58dnl Private macro.
59
60AC_DEFUN([_XC_PROG_CC], [
61  AC_REQUIRE([_XC_PROG_CC_PREAMBLE])dnl
62  AC_REQUIRE([XC_CHECK_BUILD_FLAGS])dnl
63  AC_REQUIRE([AC_PROG_INSTALL])dnl
64  AC_REQUIRE([AC_PROG_CC])dnl
65  AC_REQUIRE([AM_PROG_CC_C_O])dnl
66  AC_REQUIRE([AC_PROG_CPP])dnl
67  AC_REQUIRE([_XC_PROG_CC_POSTLUDE])dnl
68])
69
70
71dnl XC_CHECK_PROG_CC
72dnl -------------------------------------------------
73dnl Public macro.
74dnl
75dnl Checks for C compiler and C preprocessor programs,
76dnl while doing some previous sanity validation on user
77dnl provided LIBS, LDFLAGS, CPPFLAGS and CFLAGS values
78dnl that must succeed in order to continue execution.
79dnl
80dnl This sets variables CC and CPP, while preventing
81dnl LIBS, LDFLAGS, CFLAGS, CPPFLAGS and IFS from being
82dnl unexpectedly changed by underlying macros.
83
84AC_DEFUN([XC_CHECK_PROG_CC], [
85  AC_PREREQ([2.50])dnl
86  AC_BEFORE([$0],[_XC_PROG_CC_PREAMBLE])dnl
87  AC_BEFORE([$0],[AC_PROG_INSTALL])dnl
88  AC_BEFORE([$0],[AC_PROG_CC])dnl
89  AC_BEFORE([$0],[AM_PROG_CC_C_O])dnl
90  AC_BEFORE([$0],[AC_PROG_CPP])dnl
91  AC_BEFORE([$0],[AC_PROG_LIBTOOL])dnl
92  AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl
93  AC_BEFORE([$0],[_XC_PROG_CC_POSTLUDE])dnl
94  AC_REQUIRE([_XC_PROG_CC])dnl
95])
96