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dnl written by Rob Savoye <rob@cygnus.com> for Cygnus Support

dnl major rewriting for Tcl 7.5 by Don Libes <libes@nist.gov>

dnl CY_AC_PATH_TCLCONFIG and CY_AC_LOAD_TCLCONFIG should be invoked

dnl (in that order) before any other TCL macros.  Similarly for TK.

dnl CYGNUS LOCAL: This gets the right posix flag for gcc

AC_DEFUN(CY_AC_TCL_LYNX_POSIX,

[AC_REQUIRE([AC_PROG_CC])AC_REQUIRE([AC_PROG_CPP])

AC_MSG_CHECKING([if running LynxOS])

AC_CACHE_VAL(ac_cv_os_lynx,

[AC_EGREP_CPP(yes,

[/*

 * The old Lynx "cc" only defines "Lynx", but the newer one uses "__Lynx__"

 */

#if defined(__Lynx__) || defined(Lynx)

yes

#endif

], ac_cv_os_lynx=yes, ac_cv_os_lynx=no)])

#

if test "$ac_cv_os_lynx" = "yes" ; then

  AC_MSG_RESULT(yes)

  AC_DEFINE(LYNX)

  AC_MSG_CHECKING([whether -mposix or -X is available])

  AC_CACHE_VAL(ac_cv_c_posix_flag,

  [AC_TRY_COMPILE(,[

  /*

   * This flag varies depending on how old the compiler is.

   * -X is for the old "cc" and "gcc" (based on 1.42).

   * -mposix is for the new gcc (at least 2.5.8).

   */

  #if defined(__GNUC__) && __GNUC__ >= 2

  choke me

  #endif

  ], ac_cv_c_posix_flag=" -mposix", ac_cv_c_posix_flag=" -X")])

  CC="$CC $ac_cv_c_posix_flag"

  AC_MSG_RESULT($ac_cv_c_posix_flag)

  else

  AC_MSG_RESULT(no)

fi

])

#

# Sometimes the native compiler is a bogus stub for gcc or /usr/ucb/cc. This

# makes configure think it's cross compiling. If --target wasn't used, then

# we can't configure, so something is wrong. We don't use the cache

# here cause if somebody fixes their compiler install, we want this to work.

AC_DEFUN(CY_AC_C_WORKS,

[# If we cannot compile and link a trivial program, we can't expect anything to work

AC_MSG_CHECKING(whether the compiler ($CC) actually works)

AC_TRY_COMPILE(, [/* don't need anything here */],

        c_compiles=yes, c_compiles=no)

AC_TRY_LINK(, [/* don't need anything here */],

        c_links=yes, c_links=no)

if test x"${c_compiles}" = x"no" ; then

  AC_MSG_ERROR(the native compiler is broken and won't compile.)

fi

if test x"${c_links}" = x"no" ; then

  AC_MSG_ERROR(the native compiler is broken and won't link.)

fi

AC_MSG_RESULT(yes)

])

AC_DEFUN(CY_AC_PATH_TCLH, [

#

# Ok, lets find the tcl source trees so we can use the headers

# Warning: transition of version 9 to 10 will break this algorithm

# because 10 sorts before 9. We also look for just tcl. We have to

# be careful that we don't match stuff like tclX by accident.

# the alternative search directory is involked by --with-tclinclude

#

no_tcl=true

AC_MSG_CHECKING(for Tcl private headers)

AC_ARG_WITH(tclinclude, [  --with-tclinclude       directory where tcl private headers are], with_tclinclude=${withval})

AC_CACHE_VAL(ac_cv_c_tclh,[

# first check to see if --with-tclinclude was specified

if test x"${with_tclinclude}" != x ; then

  if test -f ${with_tclinclude}/tclInt.h ; then

    ac_cv_c_tclh=`(cd ${with_tclinclude}; pwd)`

  elif test -f ${with_tclinclude}/generic/tclInt.h ; then

    ac_cv_c_tclh=`(cd ${with_tclinclude}/generic; pwd)`

  else

    AC_MSG_ERROR([${with_tclinclude} directory doesn't contain private headers])

  fi

fi

# next check if it came with Tcl configuration file

if test x"${ac_cv_c_tclconfig}" != x ; then

  if test -f $ac_cv_c_tclconfig/../generic/tclInt.h ; then

    ac_cv_c_tclh=`(cd $ac_cv_c_tclconfig/../generic; pwd)`

  fi

fi

# next check in private source directory

#

# since ls returns lowest version numbers first, reverse its output

if test x"${ac_cv_c_tclh}" = x ; then

  for i in \

                ${srcdir}/../tcl \

                `ls -dr ${srcdir}/../tcl[[7-9]]* 2>/dev/null` \

                ${srcdir}/../../tcl \

                `ls -dr ${srcdir}/../../tcl[[7-9]]* 2>/dev/null` \

                ${srcdir}/../../../tcl \

                `ls -dr ${srcdir}/../../../tcl[[7-9]]* 2>/dev/null ` ; do

    if test -f $i/generic/tclInt.h ; then

      ac_cv_c_tclh=`(cd $i/generic; pwd)`

      break

    fi

  done

fi

# finally check in a few common install locations

#

# since ls returns lowest version numbers first, reverse its output

if test x"${ac_cv_c_tclh}" = x ; then

  for i in \

                `ls -dr /usr/local/src/tcl[[7-9]]* 2>/dev/null` \

                `ls -dr /usr/local/lib/tcl[[7-9]]* 2>/dev/null` \

                /usr/local/src/tcl \

                /usr/local/lib/tcl \

                ${prefix}/include ; do

    if test -f $i/generic/tclInt.h ; then

      ac_cv_c_tclh=`(cd $i/generic; pwd)`

      break

    fi

  done

fi

# see if one is installed

if test x"${ac_cv_c_tclh}" = x ; then

   AC_HEADER_CHECK(tclInt.h, ac_cv_c_tclh=installed, ac_cv_c_tclh="")

fi

])

if test x"${ac_cv_c_tclh}" = x ; then

  TCLHDIR="# no Tcl private headers found"

  AC_MSG_ERROR([Can't find Tcl private headers])

fi

if test x"${ac_cv_c_tclh}" != x ; then

  no_tcl=""

  if test x"${ac_cv_c_tclh}" = x"installed" ; then

    AC_MSG_RESULT([is installed])

    TCLHDIR=""

  else

    AC_MSG_RESULT([found in ${ac_cv_c_tclh}])

    # this hack is cause the TCLHDIR won't print if there is a "-I" in it.

    TCLHDIR="-I${ac_cv_c_tclh}"

  fi

fi

AC_SUBST(TCLHDIR)

])

AC_DEFUN(CY_AC_PATH_TCLCONFIG, [

#

# Ok, lets find the tcl configuration

# First, look for one uninstalled.

# the alternative search directory is invoked by --with-tclconfig

#

if test x"${no_tcl}" = x ; then

  # we reset no_tcl in case something fails here

  no_tcl=true

  AC_ARG_WITH(tclconfig, [  --with-tclconfig           directory containing tcl configuration (tclConfig.sh)],

         with_tclconfig=${withval})

  AC_MSG_CHECKING([for Tcl configuration])

  AC_CACHE_VAL(ac_cv_c_tclconfig,[

  # First check to see if --with-tclconfig was specified.

  if test x"${with_tclconfig}" != x ; then

    if test -f "${with_tclconfig}/tclConfig.sh" ; then

      ac_cv_c_tclconfig=`(cd ${with_tclconfig}; pwd)`

    else

      AC_MSG_ERROR([${with_tclconfig} directory doesn't contain tclConfig.sh])

    fi

  fi

  # then check for a private Tcl installation

  if test x"${ac_cv_c_tclconfig}" = x ; then

    for i in \

                ../tcl \

                `ls -dr ../tcl[[7-9]]* 2>/dev/null` \

                ../../tcl \

                `ls -dr ../../tcl[[7-9]]* 2>/dev/null` \

                ../../../tcl \

                `ls -dr ../../../tcl[[7-9]]* 2>/dev/null` ; do

      if test -f "$i/unix/tclConfig.sh" ; then

        ac_cv_c_tclconfig=`(cd $i/unix; pwd)`

        break

      fi

    done

  fi

  # check in a few common install locations

  if test x"${ac_cv_c_tclconfig}" = x ; then

    for i in `ls -d ${prefix}/lib /usr/local/lib 2>/dev/null` ; do

      if test -f "$i/tclConfig.sh" ; then

        ac_cv_c_tclconfig=`(cd $i; pwd)`

        break

      fi

    done

  fi

  # check in a few other private locations

  if test x"${ac_cv_c_tclconfig}" = x ; then

    for i in \

                ${srcdir}/../tcl \

                `ls -dr ${srcdir}/../tcl[[7-9]]* 2>/dev/null` ; do

      if test -f "$i/unix/tclConfig.sh" ; then

        ac_cv_c_tclconfig=`(cd $i/unix; pwd)`

        break

      fi

    done

  fi

  ])

  if test x"${ac_cv_c_tclconfig}" = x ; then

    TCLCONFIG="# no Tcl configs found"

    AC_MSG_WARN(Can't find Tcl configuration definitions)

  else

    no_tcl=

    TCLCONFIG=${ac_cv_c_tclconfig}/tclConfig.sh

    AC_MSG_RESULT(found $TCLCONFIG)

  fi

fi

])

# Defined as a separate macro so we don't have to cache the values

# from PATH_TCLCONFIG (because this can also be cached).

AC_DEFUN(CY_AC_LOAD_TCLCONFIG, [

    . $TCLCONFIG

dnl AC_SUBST(TCL_VERSION)

dnl AC_SUBST(TCL_MAJOR_VERSION)

dnl AC_SUBST(TCL_MINOR_VERSION)

dnl AC_SUBST(TCL_CC)

    AC_SUBST(TCL_DEFS)

dnl not used, don't export to save symbols

dnl    AC_SUBST(TCL_LIB_FILE)

    AC_SUBST(TCL_LIBS)

dnl not used, don't export to save symbols

dnl    AC_SUBST(TCL_PREFIX)

dnl not used, don't export to save symbols

dnl    AC_SUBST(TCL_EXEC_PREFIX)

    AC_SUBST(TCL_SHLIB_CFLAGS)

    AC_SUBST(TCL_SHLIB_LD)

dnl don't export, not used outside of configure

dnl AC_SUBST(TCL_SHLIB_LD_LIBS)

dnl AC_SUBST(TCL_SHLIB_SUFFIX)

dnl not used, don't export to save symbols

dnl AC_SUBST(TCL_DL_LIBS)

    AC_SUBST(TCL_LD_FLAGS)

dnl don't export, not used outside of configure

    AC_SUBST(TCL_LD_SEARCH_FLAGS)

dnl AC_SUBST(TCL_COMPAT_OBJS)

    AC_SUBST(TCL_RANLIB)

    AC_SUBST(TCL_BUILD_LIB_SPEC)

    AC_SUBST(TCL_LIB_SPEC)

dnl AC_SUBST(TCL_LIB_VERSIONS_OK)

dnl not used, don't export to save symbols

dnl    AC_SUBST(TCL_SHARED_LIB_SUFFIX)

dnl not used, don't export to save symbols

dnl    AC_SUBST(TCL_UNSHARED_LIB_SUFFIX)

])

# Warning: Tk definitions are very similar to Tcl definitions but

# are not precisely the same.  There are a couple of differences,

# so don't do changes to Tcl thinking you can cut and paste it do

# the Tk differences and later simply substitute "Tk" for "Tcl".

# Known differences:

#  - Acceptable Tcl major version #s is 7-9 while Tk is 4-9

#  - Searching for Tcl includes looking for tclInt.h, Tk looks for tk.h

#  - Computing major/minor versions is different because Tk depends on

#    headers to Tcl, Tk, and X.

#  - Symbols in tkConfig.sh are different than tclConfig.sh

#  - Acceptable for Tk to be missing but not Tcl.

AC_DEFUN(CY_AC_PATH_TKH, [

#

# Ok, lets find the tk source trees so we can use the headers

# If the directory (presumably symlink) named "tk" exists, use that one

# in preference to any others.  Same logic is used when choosing library

# and again with Tcl. The search order is the best place to look first, then in

# decreasing significance. The loop breaks if the trigger file is found.

# Note the gross little conversion here of srcdir by cd'ing to the found

# directory. This converts the path from a relative to an absolute, so

# recursive cache variables for the path will work right. We check all

# the possible paths in one loop rather than many seperate loops to speed

# things up.

# the alternative search directory is involked by --with-tkinclude

#

#no_tk=true

AC_MSG_CHECKING(for Tk private headers)

AC_ARG_WITH(tkinclude, [  --with-tkinclude       directory where tk private headers are], with_tkinclude=${withval})

AC_CACHE_VAL(ac_cv_c_tkh,[

# first check to see if --with-tkinclude was specified

if test x"${with_tkinclude}" != x ; then

  if test -f ${with_tkinclude}/tk.h ; then

    ac_cv_c_tkh=`(cd ${with_tkinclude}; pwd)`

  elif test -f ${with_tkinclude}/generic/tk.h ; then

    ac_cv_c_tkh=`(cd ${with_tkinclude}/generic; pwd)`

  else

    AC_MSG_ERROR([${with_tkinclude} directory doesn't contain private headers])

  fi

fi

# next check if it came with Tk configuration file

if test x"${ac_cv_c_tkconfig}" != x ; then

  if test -f $ac_cv_c_tkconfig/../generic/tk.h ; then

    ac_cv_c_tkh=`(cd $ac_cv_c_tkconfig/../generic; pwd)`

  fi

fi

# next check in private source directory

#

# since ls returns lowest version numbers first, reverse its output

if test x"${ac_cv_c_tkh}" = x ; then

  for i in \

                ${srcdir}/../tk \

                `ls -dr ${srcdir}/../tk[[4-9]]* 2>/dev/null` \

                ${srcdir}/../../tk \

                `ls -dr ${srcdir}/../../tk[[4-9]]* 2>/dev/null` \

                ${srcdir}/../../../tk \

                `ls -dr ${srcdir}/../../../tk[[4-9]]* 2>/dev/null ` ; do

    if test -f $i/generic/tk.h ; then

      if test x"${TK_BUILD_INCLUDES}" != x; then

        ac_cv_c_tkh=`echo "${TK_BUILD_INCLUDES}" | sed -e 's/^-I//'`

      else

        ac_cv_c_tkh=`(cd $i/generic; pwd)`

      fi

      break

    fi

  done

fi

# finally check in a few common install locations

#

# since ls returns lowest version numbers first, reverse its output

if test x"${ac_cv_c_tkh}" = x ; then

  for i in \

                `ls -dr /usr/local/src/tk[[4-9]]* 2>/dev/null` \

                `ls -dr /usr/local/lib/tk[[4-9]]* 2>/dev/null` \

                /usr/local/src/tk \

                /usr/local/lib/tk \

                ${prefix}/include ; do

    if test -f $i/generic/tk.h ; then

      ac_cv_c_tkh=`(cd $i/generic; pwd)`

      break

    fi

  done

fi

# see if one is installed

if test x"${ac_cv_c_tkh}" = x ; then

   AC_HEADER_CHECK(tk.h, ac_cv_c_tkh=installed, ac_cv_c_tkh="")

fi

])

if test x"${ac_cv_c_tkh}" != x ; then

#  no_tk=""

  if test x"${ac_cv_c_tkh}" = x"installed" ; then

    AC_MSG_RESULT([is installed])

    TKHDIR=""

  else

    AC_MSG_RESULT([found in ${ac_cv_c_tkh}])

    # this hack is cause the TKHDIR won't print if there is a "-I" in it.

    TKHDIR="-I${ac_cv_c_tkh}"

  fi

else

  TKHDIR="# no Tk directory found"

  AC_MSG_WARN([Can't find Tk private headers])

  no_tk=true

fi

AC_SUBST(TKHDIR)

])

AC_DEFUN(CY_AC_PATH_TKCONFIG, [

#

# Ok, lets find the tk configuration

# First, look for one uninstalled.

# the alternative search directory is invoked by --with-tkconfig

#

if test x"${no_tk}" = x ; then

  # we reset no_tk in case something fails here

  no_tk=true

  AC_ARG_WITH(tkconfig, [  --with-tkconfig           directory containing tk configuration (tkConfig.sh)],

         with_tkconfig=${withval})

  AC_MSG_CHECKING([for Tk configuration])

  AC_CACHE_VAL(ac_cv_c_tkconfig,[

  # First check to see if --with-tkconfig was specified.

  if test x"${with_tkconfig}" != x ; then

    if test -f "${with_tkconfig}/tkConfig.sh" ; then

      ac_cv_c_tkconfig=`(cd ${with_tkconfig}; pwd)`

    else

      AC_MSG_ERROR([${with_tkconfig} directory doesn't contain tkConfig.sh])

    fi

  fi

  # then check for a private Tk library

  if test x"${ac_cv_c_tkconfig}" = x ; then

    for i in \

                ../tk \

                `ls -dr ../tk[[4-9]]* 2>/dev/null` \

                ../../tk \

                `ls -dr ../../tk[[4-9]]* 2>/dev/null` \

                ../../../tk \

                `ls -dr ../../../tk[[4-9]]* 2>/dev/null` ; do

      if test -f "$i/unix/tkConfig.sh" ; then

        ac_cv_c_tkconfig=`(cd $i/unix; pwd)`

        break

      fi

    done

  fi

  # check in a few common install locations

  if test x"${ac_cv_c_tkconfig}" = x ; then

    for i in `ls -d ${prefix}/lib /usr/local/lib 2>/dev/null` ; do

      if test -f "$i/tkConfig.sh" ; then

        ac_cv_c_tkconfig=`(cd $i; pwd)`

        break

      fi

    done

  fi

  # check in a few other private locations

  if test x"${ac_cv_c_tkconfig}" = x ; then

    for i in \

                ${srcdir}/../tk \

                `ls -dr ${srcdir}/../tk[[4-9]]* 2>/dev/null` ; do

      if test -f "$i/unix/tkConfig.sh" ; then

        ac_cv_c_tkconfig=`(cd $i/unix; pwd)`

        break

      fi

    done

  fi

  ])

  if test x"${ac_cv_c_tkconfig}" = x ; then

    TKCONFIG="# no Tk configs found"

    AC_MSG_WARN(Can't find Tk configuration definitions)

  else

    no_tk=

    TKCONFIG=${ac_cv_c_tkconfig}/tkConfig.sh

    AC_MSG_RESULT(found $TKCONFIG)

  fi

fi

])

# Defined as a separate macro so we don't have to cache the values

# from PATH_TKCONFIG (because this can also be cached).

AC_DEFUN(CY_AC_LOAD_TKCONFIG, [

    if test -f "$TKCONFIG" ; then

      . $TKCONFIG

    fi

    AC_SUBST(TK_VERSION)

dnl not actually used, don't export to save symbols

dnl    AC_SUBST(TK_MAJOR_VERSION)

dnl    AC_SUBST(TK_MINOR_VERSION)

    AC_SUBST(TK_DEFS)

dnl not used, don't export to save symbols

    dnl AC_SUBST(TK_LIB_FILE)

dnl not used outside of configure

dnl    AC_SUBST(TK_LIBS)

dnl not used, don't export to save symbols

dnl    AC_SUBST(TK_PREFIX)

dnl not used, don't export to save symbols

dnl    AC_SUBST(TK_EXEC_PREFIX)

    AC_SUBST(TK_XINCLUDES)

    AC_SUBST(TK_XLIBSW)

    AC_SUBST(TK_BUILD_LIB_SPEC)

    AC_SUBST(TK_LIB_SPEC)

])

# Check to see if we're running under Win32, without using

# AC_CANONICAL_*.  If so, set output variable EXEEXT to ".exe".

# Otherwise set it to "".

dnl AM_EXEEXT()

dnl This knows we add .exe if we're building in the Cygwin32

dnl environment. But if we're not, then it compiles a test program

dnl to see if there is a suffix for executables.

AC_DEFUN(AM_EXEEXT,

[AC_REQUIRE([AM_CYGWIN32])

AC_MSG_CHECKING([for executable suffix])

AC_CACHE_VAL(am_cv_exeext,

[if test "$CYGWIN32" = yes; then

am_cv_exeext=.exe

else

cat > am_c_test.c << 'EOF'

int main() {

/* Nothing needed here */

}

EOF

${CC-cc} -o am_c_test $CFLAGS $CPPFLAGS $LDFLAGS am_c_test.c $LIBS 1>&5

am_cv_exeext=`echo am_c_test.* | grep -v am_c_test.c | sed -e s/am_c_test//`

rm -f am_c_test*])

test x"${am_cv_exeext}" = x && am_cv_exeext=no

fi

EXEEXT=""

test x"${am_cv_exeext}" != xno && EXEEXT=${am_cv_exeext}

AC_MSG_RESULT(${am_cv_exeext})

AC_SUBST(EXEEXT)])

# Check to see if we're running under Cygwin32, without using

# AC_CANONICAL_*.  If so, set output variable CYGWIN32 to "yes".

# Otherwise set it to "no".

dnl AM_CYGWIN32()

AC_DEFUN(AM_CYGWIN32,

[AC_CACHE_CHECK(for Cygwin32 environment, am_cv_cygwin32,

[AC_TRY_COMPILE(,[int main () { return __CYGWIN32__; }],

am_cv_cygwin32=yes, am_cv_cygwin32=no)

rm -f conftest*])

CYGWIN32=

test "$am_cv_cygwin32" = yes && CYGWIN32=yes])