dnl Checks for programs.

AC_PROG_CPP

dnl Check to see what flags are required to get stdin into cpp

dnl Check to see what flags are required to get stdin into cpp.

dnl Note that we need to look at the output, since the C compiler might

dnl not raise an error when no input files are named on the cmd line.

dnl (This is a somewhat modified version of AC_EGREP_CPP)

dnl AC_TRY_CPPSTDIN(PATTERN, PROGRAM, [ACTION-IF-FOUND [,

dnl ACTION-IF-NOT-FOUND]])

AC_DEFUN(AC_TRY_CPPSTDIN,

[AC_REQUIRE_CPP()dnl

cat > conftest.$ac_ext <<EOF

[#]line __oline__ "configure"

#include "confdefs.h"

[$1]

[$2]

EOF

ac_try="$ac_cpp $CPPSTDIN <conftest.$ac_ext >/dev/null 2>conftest.out"

AC_TRY_EVAL(ac_try)

ac_err=`grep -v '^ *+' conftest.out`

if test -z "$ac_err"; then

ifelse([$2], , :, [rm -rf conftest*

$2])

else

echo "$ac_err" >&AC_FD_CC

echo "configure: failed program was:" >&AC_FD_CC

cat conftest.$ac_ext >&AC_FD_CC

ifelse([$3], , , [ rm -rf conftest*

$3

dnl eval is necessary to expand ac_cpp.

dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.

if (eval "$ac_cpp $CPPSTDIN <conftest.$ac_ext") 2>&AC_FD_CC |

grep "$1" >/dev/null 2>&1; then

ifelse([$3], , :, [rm -rf conftest*

$3])

ifelse([$4], , , [else

rm -rf conftest*

$4

])dnl

fi

rm -f conftest*])

rm -f conftest*

])

AC_MSG_CHECKING(how to use cpp with stdin)

if test -z "$CPPSTDIN"; then

AC_CACHE_VAL(ac_cv_cpp_stdin,

[ CPPSTDIN=""

AC_TRY_CPPSTDIN([#include <assert.h>

Syntax Error], , CPPSTDIN="-")

[ CPPSTDIN="-"

AC_TRY_CPPSTDIN([^Find Me Or Else],

[#include <assert.h>

Find Me Or Else], , CPPSTDIN="")

ac_cv_cpp_stdin="$CPPSTDIN"])

CPPSTDIN="$ac_cv_cpp_stdin"

else

dnl (2) We have bison and we use bison -y

dnl (3) We have yacc and use it

AC_SUBST(YACC)

AC_SUBST(YFLAGS)

AC_PATH_PROG(yacc, yacc)

AC_PATH_PROG(bison, bison)

if test -f "$YACC"

then

echo "- Using $YACC $YFLAGS"

elif test -f "$bison"

then

else

AC_PATH_PROG(bison, bison)

if test -f "$bison"

then

echo "- Using $bison -y $YFLAGS"

YACC="$bison"

YFLAGS="-y $YFLAGS"

echo "- Using $yacc $YFLAGS"

YACC="$yacc"

fi

AC_SUBST(YACC)

AC_SUBST(YFLAGS)

AC_CHECK_LIB(sfio, main)

for curses in ncurses curses ; do