reactos/lib/3rdparty/libxml2/acinclude.m4

   1 dnl Like AC_TRY_EVAL but also errors out if the compiler generates
   2 dnl _any_ output. Some compilers might issue warnings which we want
   3 dnl to catch.
   4 AC_DEFUN([AC_TRY_EVAL2],
   5 [{ (eval echo configure:__oline__: \"[$]$1\") 1>&AC_FD_CC; dnl
   6 (eval [$]$1) 2>&AC_FD_CC; _out=`eval [$]$1 2>&1` && test "x$_out" = x; }])
   7
   8 dnl Like AC_TRY_COMPILE but calls AC_TRY_EVAL2 instead of AC_TRY_EVAL
   9 AC_DEFUN([AC_TRY_COMPILE2],
  10 [cat > conftest.$ac_ext <<EOF
  11 [#]line __oline__ "configure"
  12 #include "confdefs.h"
  13 [$1]
  14 int main(void) {
  15 [$2]
  16 ; return 0; }
  17 EOF
  18 if AC_TRY_EVAL2(ac_compile); then
  19   ifelse([$3], , :, [rm -rf conftest*
  20   $3])
  21 else
  22   echo "configure: failed program was:" >&AC_FD_CC
  23   cat conftest.$ac_ext >&AC_FD_CC
  24 ifelse([$4], , , [  rm -rf conftest*
  25   $4
  26 ])dnl
  27 fi
  28 rm -f conftest*])