dnl Process this file with Autoconf to produce a configure script for Web2c.
dnl
dnl Some things are no longer configurable:
dnl - SMALL{TeX,MF,BibTeX}: too painful to maintain the separate patch
dnl   files, and, for TeX, texmfmem.h would have to be fixed to support
dnl   more than 256 fonts.
dnl - NONASCII: necessary for the character translation feature.
dnl - REGFIX: modern compilers mostly ignore register declarations, anyway.
dnl The code for these things remains (where applicable), so you can
dnl get these features if you are willing to hack the sources. If not,
dnl it'll take a good argument to convince me to invest the time to make
dnl them configurable.
dnl 
dnl We don't use (for example) tex/tex.web because people who only want
dnl to build part of the distribution may not have any given program.
dnl Even main.c isn't guaranteed, but then nothing is, really ...
AC_INIT(web2c/main.c)

WEB2CVERSION=7.5.7
AC_SUBST(WEB2CVERSION)
AC_DEFINE_UNQUOTED(WEB2CVERSION," (Web2C $WEB2CVERSION)")

dnl Write output here, instead of putting a zillion -D's on the command line.
AC_CONFIG_HEADERS([c-auto.h:c-auto.in],
 [sed 's/^#define PACKAGE_/#define WEB2C_PACKAGE_/' c-auto.h >c-auto.tmp && mv -f c-auto.tmp c-auto.h
  date >stamp-auto])

AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET

AC_PROG_YACC
AC_PROG_LEX
# Work around a problem with Flex Version 2.5.31 which needs -l flag.
# Since all recent versions of flex support -l, don't check for the
# specific version, but check that at least "--version" is supported.
# We also want to catch LEX=/some/where/flex, so:
case $LEX in
  *flex) $LEX --version >/dev/null 2>&1 && LEX="$LEX -l" ;;
esac
AC_PROG_RANLIB
AC_CHECK_HEADERS(sys/time.h sys/timeb.h locale.h)
AC_CHECK_FUNCS(strerror gettimeofday ftime mkstemp mktemp setlocale strlcat strlcpy fmax)

AC_TYPE_SIGNAL

pb_AC_ASM_UNDERSCORE

dnl pdfTeX likes inline functions in C code.
AC_C_INLINE

dnl These are standard among *NIX systems, but not when cross-compiling
AC_DEFUN([CF_SUBST],
[AC_MSG_CHECKING(for $1 (symbol $2))
AC_CACHE_VAL(cf_cv_subst_$2,[
test -z "[$]$2" && $2=$3
cf_cv_subst_$2=[$]$2])
$2=${cf_cv_subst_$2}
AC_MSG_RESULT([$]$2)
AC_SUBST($2)
])dnl
CF_SUBST(loader,LD,ld)
CF_SUBST(archiver,AR,ar)
CF_SUBST(archiver options,ARFLAGS,rc)

# Needed on A/UX 3.0. I don't want to pull in other -lposix's, though.
# From: bernt@weinberg.pop.bio.aau.dk (Bernt Guldbrandtsen)
if test `(uname) 2>/dev/null` = aux; then
  AC_CHECK_LIB(posix, sigemptyset)
fi

dnl These tests prevent reliable cross-compilation.  Sigh.
dnl Some special hacks are used to make cross-compilation
dnl succeed in one special case.

AC_UNSET_CC
AC_C_CHAR_UNSIGNED
AC_C_BIGENDIAN
AC_CHECK_SIZEOF(long)
AC_RESET_CC

# --with and --enable options.
test "x$with_x_toolkit" = xyes && with_x=yes
test "x$with_x_toolkit" = xxt && with_x=yes
test "x$with_x_toolkit" = xathena && with_x=yes
test "x$with_x" = xno && with_x_toolkit=no

: ${with_x=no} # tell PATH_XTRA no X by default, if not specified.

sinclude(withenable.ac)
sinclude(../kpathsea/withenable.ac)
sinclude(../../libs/zlib/withenable.ac)
sinclude(../../libs/libpng/withenable.ac)
sinclude(../../libs/zlib/zlib.ac)
sinclude(../../libs/libpng/libpng.ac)
sinclude(../../libs/xpdf/libxpdf.ac)
sinclude(../../libs/obsdcompat/libobsd-compat.ac)
sinclude(../../libs/freetype2/withenable.ac)
sinclude(../../libs/freetype2/freetype2.ac)
sinclude(../../libs/teckit/withenable.ac)
sinclude(../../libs/teckit/teckit.ac)
sinclude(../../libs/icu-xetex/withenable.ac)
sinclude(../../libs/icu-xetex/icu-xetex.ac)
sinclude(../../libs/graphite-engine/withenable.ac)
sinclude(../../libs/graphite-engine/graphite-engine.ac)

# Whether to build mf-nowin.
: ${with_mf_nowin=no} # Default.
if test "x$with_mf_nowin" = xyes; then
  MFN=
else
  MFN='#! '
fi
AC_SUBST(MFN)

# For Omega.
if test -d $srcdir/omegadir; then
  test "${with_omega+set}" = set || with_omega=yes
else
  if test "x$with_omega" = xyes; then
    AC_MSG_WARN(The Omega sources are not available.)
  fi
  with_omega=no
fi
if test "x$with_omega" = xyes; then
  OMEGA=
  KPSE_CONFIG_FILES([omegafonts/Makefile otps/Makefile])
else
  OMEGA='#! '
fi
AC_SUBST(OMEGA)

# For Aleph
if test -d $srcdir/alephdir && test -d $srcdir/omegadir; then
  test "${with_aleph+set}" = set || with_aleph=yes
else
  if test "x$with_aleph" = xyes; then
    AC_MSG_WARN(The Aleph sources are not available.)
  fi
  with_aleph=no
fi
if test "x$with_aleph" = xyes; then
  ALEPH=
else
  ALEPH='#! '
fi
AC_SUBST(ALEPH)

# For pdfTeX.
if test -d $srcdir/pdftexdir; then
  # Create build dir, if necessary.
  test -d pdftexdir || mkdir pdftexdir
  test "${with_pdftex+set}" = set || with_pdftex=yes
else
  if test "x$with_pdftex" = xyes; then
    AC_MSG_WARN(The pdfTeX sources are not available.)
  fi
  with_pdftex=no
fi

# For pdfeTeX
if test -d $srcdir/pdftexdir; then
  test "${with_pdfetex+set}" = set || with_pdfetex=yes
else
  if test "x$with_pdfetex" = xyes; then
    AC_MSG_WARN(Not all sources of pdfeTeX are available.)
  fi
  with_pdfetex=no
fi

# For luaTeX.
if test -d $srcdir/luatexdir; then
  # Create build dir, if necessary.
  test -d luatexdir || mkdir luatexdir
  test "${with_luatex+set}" = set || with_luatex=yes
else
  if test "x$with_luatex" = xyes; then
    AC_MSG_WARN(The luaTeX sources are not available.)
  fi
  with_luatex=no
fi

# For XeTeX
if test -d $srcdir/xetexdir \
    && test -d $srcdir/etexdir; then
  test "${with_xetex+set}" = set || with_xetex=yes
else
  if test "x$with_xetex" = xyes; then
    AC_MSG_WARN(Not all sources of XeTeX are available.)
  fi
  with_xetex=no
fi

# Check whether C++ compiler works.  Prevent exit if it doesn't.
if test "x$with_pdftex"  = xyes ||
   test "x$with_luatex"  = xyes ||
   test "x$with_pdfetex" = xyes ||
   test "x$with_xetex"   = xyes
then
  # First test whether the compiler works in a subshell, and if so,
  # do it again in the main shell so we see the result.
(
  AC_PROG_CXX
) && {
  AC_PROG_CXX
} || {
  test "x$with_pdftex" = xyes \
    && AC_MSG_WARN(No C++ compiler: pdfTeX will not be compiled.)
  test "x$with_pdfetex" = xyes \
    && AC_MSG_WARN(No C++ compiler: pdfeTeX will not be compiled.)
  test "x$with_luatex" = xyes \
    && AC_MSG_WARN(No C++ compiler: luaTeX will not be compiled.)
  test "x$with_xetex" = xyes \
    && AC_MSG_WARN(No C++ compiler: XeTeX will not be compiled.)
  with_pdftex=no
  with_pdfetex=no
  with_luatex=no
  with_xetex=no
  true
}
fi

# Check if we can link the C++ runtime lib statically, if we're building
# some binary that will need it. And, only try the magic hack, if C++ is
# GNU C++ (i.e. if $ac_cv_prog_gxx=yes). The reason for using a static
# C++ runtime is that binaries are more portable. That's important only
# if you are distributing binaries, so it is disabled by default.
# 
flags_try1='-nodefaultlibs -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic -lm -lgcc_eh -lgcc -lc -lgcc_eh -lgcc'
flags_try2='-nodefaultlibs -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic -lm -lgcc -lc -lgcc'
CXXLDEXTRA=
CXXHACKLINK='$(kpathsea_cxx_link)'
CXXHACKLDLIBS='$(LOADLIBES)'
if test "x$with_cxx_runtime_hack" = xyes &&
   { test "x$with_pdftex"  = xyes ||
     test "x$with_luatex"  = xyes ||
     test "x$with_pdfetex" = xyes ||
     test "x$with_xetex"   = xyes; }
then
  AC_MSG_CHECKING(for statically linking C++ runtime library)

  cpp_link_hack=false
  old_flags=$flags
  old_ac_ext=$ac_ext
  old_ac_link=$ac_link
  if test "$ac_cv_prog_gxx" = yes; then

    # New C++ compilers choke on <iostream.h>, thanks to the
    # backward-incompatible standard.  At this point, our code is
    # using the new-style <iostream>, and so our test should follow suit.
    # 
    ac_ext=C
    cat > conftest.$ac_ext << EOF
#include <iostream>
  using namespace std;
int main()
{
  cout <<"worksok\n";
}
EOF
    for flags in "$flags_try1" "$flags_try2"; do
      ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS $flags 1>&5'
      if { (eval echo configure: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
        case `(./conftest; exit) 2>/dev/null` in
          worksok)
            cpp_link_hack=true; break;;
        esac
      else
        echo "configure: failed program was:" >&5
        cat conftest.$ac_ext >&5
      fi
    done
  fi

  if $cpp_link_hack; then
    CXXLDEXTRA=$flags
    CXXHACKLINK='$(cxx_link_command)'
    CXXHACKLDLIBS='$(proglib) $(kpathsea_dir)/.libs/libkpathsea.a $(LIBS) $(XLOADLIBES)'
    AC_MSG_RESULT(ok using $flags)
  else
    AC_MSG_RESULT(not supported)
  fi

  flags=$old_flags
  ac_ext=$old_ac_ext
  ac_link=$old_ac_link
fi
AC_SUBST(CXXLDEXTRA)
AC_SUBST(CXXHACKLINK)
AC_SUBST(CXXHACKLDLIBS)

if test "x$with_pdftex" = xyes; then
  PTEX=
else
  PTEX='#! '
fi
AC_SUBST(PTEX)

if test "x$with_pdfetex" = xyes; then
  PETEX=
else
  PETEX='#! '
fi
AC_SUBST(PETEX)

if test "x$with_luatex" = xyes; then
  LTEX=
else
  LTEX='#! '
fi
AC_SUBST(LTEX)

if test "x$with_xetex" = xyes; then
  XETEX=
else
  XETEX='#! '
fi
AC_SUBST(XETEX)

sinclude(xetexdir/withenable.ac)
sinclude(xetexdir/tests.ac)

sinclude(xetexdir/acx_pthread.m4)
ACX_PTHREAD

# the following is for OpenBSD, where the PTHREAD_CFLAGS setting is defeated by -nodefaultlibs in the xetex link;
# similar hackery might be needed on other systems (groan) -- JK 2007-01-07
case "${host}" in
*-*-*bsd*)
  if test "x$PTHREAD_LIBS" = "x"; then
    PTHREAD_LIBS="-lpthread"
  fi ;;
esac

if test "x$with_xetex" = xyes; then
  AC_HAS_CARBON

  if test "x$has_carbon" = "xyes"; then
    XETEX_MACOSX=
    XETEX_GENERIC='#! '
  else
    XETEX_MACOSX='#! '
    XETEX_GENERIC=

    AC_HAS_LIBFONTCONFIG
    if test "x$LDFONTCONFIG" = "x"; then
      AC_MSG_ERROR([
Cannot build XeTeX without libfontconfig.
Use the --with-fontconfig=DIR option to specify the prefix where
fontconfig is installed.
      ])
    fi
    AC_SUBST(FONTCONFIGCPPFLAGS)
    AC_SUBST(FONTCONFIGLDFLAGS)
    AC_SUBST(LDFONTCONFIG)
  fi
  AC_SUBST(XETEX_MACOSX)
  AC_SUBST(XETEX_GENERIC)

  if test "x$with_graphite" = xno; then
    XETEX_GRAPHITE='#! '
  else
    XETEX_GRAPHITE=
  fi
  AC_SUBST(XETEX_GRAPHITE)
fi


# For e-TeX, three choices: no, yes, and tex.  In the latter case, we
# have to comment out the normal TeX build (TEX), as well as enable the
# e-TeX build (ETEX) and the replacement of TeX with e-TeX in compatibilty
# mode(CTEX).
if test -d $srcdir/etexdir; then
  # Create build dir, if necessary.
  test -d etexdir || mkdir etexdir
  test "${with_etex+set}" = set || with_etex=yes
else
  if test "x$with_etex" = xyes; then
    AC_MSG_WARN(The e-TeX sources are not available.)
  fi
  with_etex=no
fi
if test "x$with_etex" = xyes; then
  ETEX=
else
  ETEX='#! '
fi
AC_SUBST(ETEX)


# --with-x* options: Distinguish no X at all, no toolkit, or toolkit.
AC_PATH_XTRA
if test "x$with_x" = xyes; then
  if test -n "$x_libraries"; then
    XLFLAG="-L$x_libraries"
    wlibs="-lX11 $wlibs $XLFLAG"
  else
    wlibs="-lX11 $wlibs"
  fi
  if test -z "$x_ext_lib"; then # allow envvar override
    AC_CHECK_LIB(Xext, XextCreateExtension,
                 x_ext_lib=-lXext, :, $wlibs $X_EXTRA_LIBS $XLFLAG)
  fi
  if test "x$with_mf_x_toolkit" = xno; then
    wfile=x11-Xlib.c
  else
    # Effectively demote --with-x-toolkit=athena to xt since 
    # the code does not distinguish.
    x_tool_libs="-lXt $x_tool_libs"
    wfile=x11-Xt.c
  fi
  test -d window || mkdir window
  case "$srcdir" in
    /*) wfile=$srcdir/window/$wfile;;
    .)  ;;
    *)  wfile=../$srcdir/window/$wfile;;
  esac
  (cd window && (rm -f x11.c; $LN_S $wfile x11.c))
  AC_DEFINE([X11WIN], 1, [Define to include X11 window in Metafont.])
fi
AC_SUBST(x_ext_lib)
AC_SUBST(x_tool_libs)
AC_SUBST(wlibs)

if test "x$enable_fmtutil" = xyes; then
  FMU='# '
else
  FMU=
fi
AC_SUBST(FMU)

# Don't bother with pdflib unless pdf*TeX is requested.
if test "$with_pdftex" = yes || \
   test "$with_pdfetex" = yes
then
  KPSE_CONFIG_FILES([pdftexdir/Makefile])
fi

# Ditto luatex.
if test "$with_luatex" = yes; then
  KPSE_CONFIG_FILES([luatexdir/Makefile])
fi

dnl Create tests subdirectory.
test -d tests || mkdir tests

# Is libm present.  FIXME: do we need it at all?
AC_CHECK_LIB(m, main)

# For cross-compilation.  Put at the end so there is a fair chance
# these are still visible when the configure script has finished.

# The variables we need to build binaries that will run on the build
# machine: BUILDCC, BUILDCFLAGS, BUILDCCLD.
KPSE_CROSS_BUILD_VAR(CC, cc)
KPSE_CROSS_BUILD_VAR(CFLAGS, $(BUILDXCFLAGS))
KPSE_CROSS_BUILD_VAR(CPPFLAGS, $(BUILDXCPPFLAGS))
KPSE_CROSS_BUILD_VAR(LDFLAGS, $(BUILDXLDFLAGS))
KPSE_CROSS_BUILD_VAR(CCLD, $(BUILDCC))

# And supporting programs we need to have available on the build
# machine.
KPSE_CROSS_PATH_PROG(TANGLEBOOT, tangle, ./tangleboot)
KPSE_CROSS_PATH_PROG(TANGLE, tangle, ./tangle)
KPSE_CROSS_PATH_PROG(CTANGLEBOOT, ctangle, ./ctangleboot)
KPSE_CROSS_PATH_PROG(CTANGLE, ctangle, ./ctangle)
KPSE_CROSS_PATH_PROG(TIE, tie, ./tie)
if test "x$with_omega" = xyes || test "x$with_aleph" = xyes || test "x$with_xetex" = xyes; then
KPSE_CROSS_PATH_PROG(OTANGLE, otangle, ./otangle)
fi

AH_TOP([/* c-auto.h: defines for web2c, as determined by configure.

   Copyright 1994-97, 2008 Karl Berry.
   Copyright 1997-99, 2002, 2005 Olaf Weber.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* Guard against double inclusion. */
#ifndef WEB2C_C_AUTO_H
#define WEB2C_C_AUTO_H

/* web2c: the version string. */
#define WEB2CVERSION "REPLACE-WITH-WEB2CVERSION"])
AH_BOTTOM([#endif /* !WEB2C_C_AUTO_H */])

dnl Generate `Makefile's, `config.status', and our header file.
KPSE_CONFIG_FILES([Makefile doc/Makefile lib/Makefile man/Makefile mpware/Makefile 
          mpdir/Makefile web2c/Makefile window/Makefile])
AC_OUTPUT