/[hurd]/gnumach/aclocal.m4
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revision 1.2 by roland, Sat May 1 00:34:20 1999 UTC revision 1.2.4.1 by marcus, Tue Jul 12 23:01:06 2005 UTC
# Line 2  dnl These modifications are to allow for Line 2  dnl These modifications are to allow for
2  dnl In the situation that cross-linking is impossible, the variable  dnl In the situation that cross-linking is impossible, the variable
3  dnl `cross_linkable' will be substituted with "yes".  dnl `cross_linkable' will be substituted with "yes".
4    
5  dnl  AC_DEFUN([hurd_SYSTYPE],
 AC_DEFUN(AC_PROG_CC_LOCAL,  
 [AC_BEFORE([$0], [AC_PROG_CPP])dnl  
 AC_CHECK_PROG(CC, gcc, gcc)  
 if test -z "$CC"; then  
   AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)  
   test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])  
 fi  
   
 AC_PROG_CC_WORKS_LOCAL  
 AC_PROG_CC_GNU  
   
 if test $ac_cv_prog_gcc = yes; then  
   GCC=yes  
 dnl Check whether -g works, even if CFLAGS is set, in case the package  
 dnl plays around with CFLAGS (such as to build both debugging and  
 dnl normal versions of a library), tasteless as that idea is.  
   ac_test_CFLAGS="${CFLAGS+set}"  
   ac_save_CFLAGS="$CFLAGS"  
   CFLAGS=  
 dnl  AC_PROG_CC_G  
   if test "$ac_test_CFLAGS" = set; then  
     CFLAGS="$ac_save_CFLAGS"  
 dnl # This doesn't work on Linux (libc-4.5.26): Because of differences between  
 dnl # the shared and the static libraries there are less symbols available  
 dnl # without -g than with -g. It is therefore better to run the configuration  
 dnl # without -g and to add -g afterwards than the contrary. So don't add  
 dnl # -g to the CFLAGS now.  
 dnl  elif test $ac_cv_prog_cc_g = yes; then  
 dnl    CFLAGS="-g -O"  
   else  
 dnl    CFLAGS="-O"  
     # Add "-O" to both the CC and CPP commands, to eliminate possible confusion  
     # that results from __OPTIMIZE__ being defined for CC but not CPP.  
 changequote(, )dnl  
     if echo "$CC " | grep ' -O[1-9 ]' > /dev/null 2>&1; then  
 changequote([, ])dnl  
       : # already optimizing  
     else  
       CC="$CC -O"  
       ac_cv_prog_CC="$CC"  
     fi  
   fi  
 else  
   GCC=  
 dnl # See above.  
 dnl   test "${CFLAGS+set}" = set || CFLAGS="-g"  
 fi  
 ])  
   
 AC_DEFUN(AC_PROG_CC_WORKS_LOCAL,  
 [AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) works])  
 AC_LANG_SAVE  
 AC_LANG_C  
 AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross)  
 AC_LANG_RESTORE  
 AC_MSG_RESULT($ac_cv_prog_cc_works)  
 if test $ac_cv_prog_cc_works = no; then  
  cross_linkable=no  
  ac_cv_prog_cc_cross=yes  
  # AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.])  
 else  
  cross_linkable=yes  
 fi  
 AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler])  
 AC_MSG_RESULT($ac_cv_prog_cc_cross)  
 AC_SUBST(cross_linkable)  
 cross_compiling=$ac_cv_prog_cc_cross  
 ])  
   
 AC_DEFUN(hurd_SYSTYPE,  
6  [AC_REQUIRE([AC_CANONICAL_HOST])dnl  [AC_REQUIRE([AC_CANONICAL_HOST])dnl
7  case "$host_cpu" in  case "$host_cpu" in
8  i[[3456]]86)    systype=i386 ;;  i[[3456]]86)    systype=i386 ;;
9  *)              systype="$host_cpu" ;;  *)              systype="$host_cpu" ;;
10  esac  esac
11  AC_SUBST(systype)])  AC_SUBST([systype])])

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