dnl ==================================================================
dnl Checks for header files.
dnl ==================================================================

AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_MAJOR
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(
	alloca.h arpa/inet.h asm/io.h assert.h conio.h \
	ctype.h ddraw.h dinput.h direct.h dirent.h dlfcn.h dmedia/audio.h \
	dmedia/cdaudio.h dpmi.h dsound.h errno.h fcntl.h io.h \
	ifaddrs.h libc.h limits.h linux/cdrom.h linux/joystick.h \
	linux/soundcard.h machine/soundcard.h malloc.h math.h mgraph.h _mingw.h \
	netdb.h netinet/in.h process.h pthread.h pwd.h rpc/types.h setjmp.h \
	signal.h stdarg.h stdio.h stdlib.h string.h strings.h sys/asoundlib.h \
	sys/audioio.h sys/filio.h sys/ioctl.h sys/io.h sys/ipc.h sys/mman.h \
	sys/param.h sys/poll.h sys/shm.h sys/signal.h sys/socket.h \
	sys/soundcard.h sys/stat.h sys/time.h sys/types.h sys/uio.h termios.h \
	time.h unistd.h vgakeyboard.h vgamouse.h windows.h winsock.h
)
if test "x$mingw" = xyes; then
	AC_MSG_CHECKING(for fnmatch.h)
	AC_MSG_RESULT(yes)
	AC_DEFINE(HAVE_FNMATCH_H, 1, [Define this if you have fnmatch.h])
	AC_MSG_CHECKING(for tchar.h)
	AC_MSG_RESULT(yes)
	AC_DEFINE(HAVE_TCHAR_H, 1, [Define this if you have tchar.h])
else
	AC_CHECK_HEADERS(fnmatch.h)
fi

if test "x$ac_cv_header_alloca_h" = xno; then
	AC_MSG_CHECKING(for alloca in stdlib.h)
	AC_TRY_COMPILE(
		[#include <stdlib.h>],
		[void *(*foo)(size_t) = alloca;],
		have_alloca_proto=yes
		AC_MSG_RESULT(yes),
		have_alloca_proto=no
		AC_MSG_RESULT(no)
	)
else
	AC_MSG_CHECKING(for alloca in alloca.h)
	AC_TRY_COMPILE(
		[#include <stdlib.h>]
		[#include <alloca.h>],
		[void *(*foo)(size_t) = alloca;],
		have_alloca_proto=yes
		AC_MSG_RESULT(yes),
		have_alloca_proto=no
		AC_MSG_RESULT(no)
	)
fi

if test "x$have_alloca_proto" = xyes; then
	AC_DEFINE(HAVE_ALLOCA_PROTO)
fi
AH_VERBATIM([HAVE_ALLOCA_PROTO],
[/* Define this if alloca is prototyped */
#undef HAVE_ALLOCA_PROTO
#ifndef HAVE_ALLOCA_PROTO
#ifndef QFASM
void *alloca (int size);
#endif
#endif])

AC_MSG_CHECKING(for fnmatch in fnmatch.h)
AC_TRY_COMPILE(
	[#include "fnmatch.h"],
	[int (*foo)() = fnmatch;],
	AC_DEFINE(HAVE_FNMATCH_PROTO, 1, [Define this if fnmatch is prototyped in fnmatch.h])
	AC_MSG_RESULT(yes),
	AC_MSG_RESULT(no)
)

AC_MSG_CHECKING(for strnlen in string.h)
AC_TRY_COMPILE(
	[#include "string.h"],
	[int (*foo)() = strnlen;],
	AC_DEFINE(HAVE_STRNLEN_PROTO, 1, [Define this if strnlen is prototyped in string.h])
	AC_MSG_RESULT(yes),
	AC_MSG_RESULT(no)
)

AC_MSG_CHECKING(for strcasestr in string.h)
AC_TRY_COMPILE(
	[#include "string.h"],
	[int (*foo)() = strcasestr;],
	AC_DEFINE(HAVE_STRCASESTR_PROTO, 1, [Define this if strcasestr is prototyped in string.h])
	AC_MSG_RESULT(yes),
	AC_MSG_RESULT(no)
)