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      1 #---------------------------------------------------------------------------
      2 #
      3 # xc-cc-check.m4
      4 #
      5 # Copyright (c) 2013 Daniel Stenberg <daniel (a] 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 
     24 dnl _XC_PROG_CC_PREAMBLE
     25 dnl -------------------------------------------------
     26 dnl Private macro.
     27 
     28 AC_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=$CPPFLAGS
     34 ])
     35 
     36 
     37 dnl _XC_PROG_CC_POSTLUDE
     38 dnl -------------------------------------------------
     39 dnl Private macro.
     40 
     41 AC_DEFUN([_XC_PROG_CC_POSTLUDE], [
     42   IFS=$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 
     56 dnl _XC_PROG_CC
     57 dnl -------------------------------------------------
     58 dnl Private macro.
     59 
     60 AC_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 
     71 dnl XC_CHECK_PROG_CC
     72 dnl -------------------------------------------------
     73 dnl Public macro.
     74 dnl
     75 dnl Checks for C compiler and C preprocessor programs,
     76 dnl while doing some previous sanity validation on user
     77 dnl provided LIBS, LDFLAGS, CPPFLAGS and CFLAGS values
     78 dnl that must succeed in order to continue execution.
     79 dnl
     80 dnl This sets variables CC and CPP, while preventing
     81 dnl LIBS, LDFLAGS, CFLAGS, CPPFLAGS and IFS from being
     82 dnl unexpectedly changed by underlying macros.
     83 
     84 AC_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 
     97