dnl Process this file with autoconf 2.61 or later to produce
dnl a configure script.
AC_PREREQ(2.61)
AC_INIT(config.h.in)
AC_CONFIG_HEADERS(config.h)

dnl Check for broken VPATH handling on older NetBSD makes.
AC_DEFUN(AC_PROG_MAKE_VPATHOK,
[AC_MSG_CHECKING(whether ${MAKE-make} has sane VPATH handling)
set dummy ${MAKE-make}; ac_make=`echo "[$]2" | sed 'y%./+-%__p_%'`
AC_CACHE_VAL(ac_cv_prog_make_vpathok,
[mkdir conftestdir
cat > conftestdir/conftestmake <<\EOF
VPATH = ..
conftestfoo: conftestbar
	@echo ac_make2temp=ok
conftestbar: conftestbaz
	@echo ac_maketemp=broken
	@touch conftestbar
EOF
echo > conftestbaz # these two lines need to be...
echo > conftestbar # ... in this order not the other
changequote(, )dnl
unset ac_maketemp
unset ac_make2temp
# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
eval `cd conftestdir; ${MAKE-make} -f conftestmake 2>/dev/null | grep temp=`
changequote([, ])dnl
if test -n "$ac_maketemp"; then
  ac_cv_prog_make_vpathok=no
else
  if test -n "$ac_make2temp"; then
    ac_cv_prog_make_vpathok=yes
  else
    ac_cv_prog_make_vpathok=no
  fi
fi
rm -rf conftestdir
rm -f conftestbar conftestbaz])dnl
if test $ac_cv_prog_make_vpathok = yes; then
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi
])

AC_PREFIX_PROGRAM(nasm)

dnl Checks for programs.
AC_USE_SYSTEM_EXTENSIONS
AC_ISC_POSIX
AC_PROG_CC
AC_PROG_LN_S
AC_PROG_MAKE_SET
if test -f nasm.c; then
  # we're building in the source dir, so we don't need this check at all
  ac_cv_prog_make_vpathok=yes
else
  AC_PROG_MAKE_VPATHOK
fi
AC_PROG_INSTALL

dnl If we have gcc, add appropriate options
PA_ADD_CFLAGS([-W])
PA_ADD_CFLAGS([-Wall])
PA_ADD_CFLAGS([-std=c99])
PA_ADD_CFLAGS([-pedantic])

dnl Look for "nroff" or "groff"
AC_CHECK_PROGS(NROFF, nroff, echo)
AC_SUBST(NROFF)

dnl Checks for header files.
AC_HEADER_STDC
if test $ac_cv_header_stdc = no; then
  AC_MSG_ERROR([NASM requires ANSI C header files to compile])
fi

AC_CHECK_HEADERS(limits.h)
if test $ac_cv_header_limits_h = no; then
  AC_MSG_ERROR([NASM requires '<limits.h>' to compile])
fi

dnl Check for <inttypes.h> or add a substitute version
AC_CHECK_HEADERS(inttypes.h, , CFLAGS="$CFLAGS -I\$(top_srcdir)/inttypes")

dnl The standard header for str*casecmp is <strings.h>
AC_CHECK_HEADERS(strings.h)

dnl Look for <stdbool.h>
AC_CHECK_HEADERS(stdbool.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_SIZE_T

dnl Checks for library functions.
AC_SUBST(XOBJS)

AC_CHECK_FUNCS(strcspn, ,
  AC_MSG_ERROR([NASM requires ANSI C (specifically, "strcspn")]))

AC_CHECK_FUNCS(strspn, ,
  AC_MSG_ERROR([NASM requires ANSI C (specifically, "strspn")]))

missing=true
AC_CHECK_FUNCS([vsnprintf _vsnprintf], missing=false)
if $missing; then
   XOBJS="$XOBJS lib/vsnprintf.o"
fi

missing=true
AC_CHECK_FUNCS([snprintf _snprintf], missing=false)
if $missing; then
   XOBJS="$XOBJS lib/snprintf.o"
fi

AC_CHECK_FUNCS(strcasecmp stricmp)
AC_CHECK_FUNCS(strncasecmp strnicmp)
AC_CHECK_FUNCS(strsep)

AC_CHECK_FUNCS(getuid)
AC_CHECK_FUNCS(getgid)

if test $ac_cv_prog_make_vpathok = no; then
  echo Copying generated srcs into build directory to compensate for VPATH breakage
  for file in macros.c insnsa.c insnsd.c insnsn.c insnsi.h version.h version.mac; do
    if test ! -f $file; then cp -p ${srcdir}/${file} .; fi
  done
fi

AC_OUTPUT_COMMANDS([mkdir -p output])
AC_OUTPUT(Makefile rdoff/Makefile doc/Makefile)