# acinclude.m4 for Xastir
#
# Copyright (C) 2000-2019 The Xastir Group
#

# test for devices.  Avoid the tests on Cygwin as they hang on some
# WinXP boxes.
#
AC_DEFUN([XASTIR_DETECT_DEVICES],
[
AC_MSG_CHECKING([for devices])
if test -d /proc/registry ; then
ac_tnc_port=/dev/ttyS0
ac_gps_port=/dev/ttyS1
elif test -c /dev/cuaa0 ; then
ac_tnc_port=/dev/cuaa0
ac_gps_port=/dev/cuaa1
elif test -c /dev/ttyS0 ; then
ac_tnc_port=/dev/ttyS0
ac_gps_port=/dev/ttyS1
elif test -c /dev/cua/a ; then
ac_tnc_port=/dev/cua/a
ac_gps_port=/dev/cua/b
else
ac_tnc_port=none
ac_gps_port=none
fi

AC_DEFINE_UNQUOTED([TNC_PORT], "$ac_tnc_port", [Default TNC port.])
AC_DEFINE_UNQUOTED([GPS_PORT], "$ac_gps_port", [Default GPS port.])
AC_MSG_RESULT(found $ac_tnc_port and $ac_gps_port)
])

# add search paths
AC_DEFUN([XASTIR_ADD_SEARCH_PATHS],
[
AC_MSG_CHECKING([for search paths])

test -d /usr/local/include && CPPFLAGS="-I/usr/local/include $CPPFLAGS"
test -d /usr/local/lib && LDFLAGS="-L/usr/local/lib $LDFLAGS"

for d in /sw /opt /opt/local /usr/dt/share /usr/sfw /opt/sfw; do
test -d $d/include && CPPFLAGS="$CPPFLAGS -I$d/include"
test -d $d/lib && LDFLAGS="$LDFLAGS -L$d/lib"
done

AC_MSG_RESULT([done])
])

# add compiler flags
AC_DEFUN([XASTIR_COMPILER_FLAGS],
[
# notes -- gcc only! HPUX doesn't work for this so no "-Ae +O2"


# everybody likes "-g -O2", right?
# TVR: Not only does "everybody" not like "-g -O2", but the code below
# is unnecessary for GCC, which does like "-g -O2".  The autoconf macros that 
# probe for the C  compiler will put "-g -O2" into CFLAGS if the compiler is
# GCC and the user has not specified any CFLAGS, and leaves CFLAGS alone
# if the user has set it him/herself.  The "##" commented code
# below forces -g -O2 into CFLAGS even if the user has specified something
# else.
##for f in -g -O2; do
## eventually write a test for these
## gcc already checks for -g earlier!
##echo $CFLAGS | grep -- $f > /dev/null || CFLAGS="$CFLAGS $f"
##done

# brutal!
# check for sed maybe?
if test "$ac_cv_prog_ac_ct_CC" = "gcc"; then
gcc --help | sed -e "/^[^ ]/d" -e "/^ [^ ]/d" -e "/^  [^-]/d" -e "s/  //" -e "s/ .*//" > gccflags

# I need a test for -Wno-return-type and -DFUNCPROTO=15
# before adding them

for f in -no-cpp-precomp -pipe; do
grep -- $f gccflags > /dev/null && CFLAGS="$CFLAGS $f"
done

# delete temporary file
rm -f gccflags

# add any other flags that aren't added earlier
# Can't add "-Wno-unused-parameter" as older compilers don't like
# it.  
#
for f in -W -Wall -Wpointer-arith -Wstrict-prototypes; do
echo $CFLAGS | grep -- $f > /dev/null || CFLAGS="$CFLAGS $f"
done

# Now check whether to use -Wno-unused-parameter (gcc 3) or -Wno-unused
AC_MSG_CHECKING([whether compiler accepts -Wno-unused-parameter])
save_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS -Wno-unused-parameter"
AC_COMPILE_IFELSE(
 [AC_LANG_PROGRAM([[]],
                  [[int i;]])],
 [AC_MSG_RESULT([yes])],
 [AC_MSG_RESULT([no, using -Wno-unused]); CFLAGS="$save_CFLAGS -Wno-unused"])

# end gcc-specific checks
fi

# add any pthread flags now
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"

AC_MSG_CHECKING([for compiler flags])
AC_MSG_RESULT(using $CFLAGS)
])

# set XASTIR_SYSTEM
# JMT - is this really necessary?
AC_DEFUN([XASTIR_SET_SYSTEM],
[
AC_MSG_CHECKING([for system])

case "$host_os" in
cygwin*)
  system=Cygnus
;;
darwin*)
  system=Darwin
  LDFLAGS="-L/sw/lib -L/opt/local/lib $LDFLAGS"
  CPPFLAGS="-I/sw/include -I/opt/local/include $CPPFLAGS"
  EXTRA_BIN_PATH=":/opt/local/bin:/sw/bin"
;;
freebsd*)
  system=FreeBSD
;;
hpux*)
  system=HP/UX
;;
linux*)
  system=Linux
#
#
# Useful for testing MacOSX paths on a Linux development box:
#  EXTRA_BIN_PATH=":/opt/local/bin:/sw/bin"
#
#
;;
netbsd*)
  system=NetBSD
;;
openbsd*)
  system=OpenBSD
;;
solaris*)
  system=Solaris
;;
*)
  system=unknown
;;
esac

AC_DEFINE_UNQUOTED([XASTIR_SYSTEM], "$system", [Define system type.])
AC_MSG_RESULT($system)
])

AC_DEFUN([XASTIR_DETECT_BINARIES],
[
BINPATH=$PATH

for d in / /usr /usr/local /usr/X11 /usr/X11R6 /usr/sfw /opt/sfw /opt/local /sw; do
test -d $d/bin && echo $BINPATH | grep -- $d/bin > /dev/null || BINPATH="$BINPATH:$d/bin"
done

# it would be much nicer to do this in a for loop

if test "$use_lsb" = "yes"; then
  AC_DEFINE_UNQUOTED(HAVE_CONVERT, 1, [Define if you have gm or convert]) 
  AC_DEFINE_UNQUOTED(CONVERT_PATH, "/opt/Xastir/bin/gm convert", [Path to gm or convert]) 
else
  AC_PATH_PROG(gm, [gm version], no, $BINPATH)
  AC_CHECK_FILE(/usr/bin/gm.exe, gm="/usr/bin/gm")
  if test "$gm" != "no"; then
    AC_DEFINE_UNQUOTED(HAVE_CONVERT, 1, [Define if you have gm or convert]) 
    AC_DEFINE_UNQUOTED(CONVERT_PATH, "${gm} convert", [Path to gm or convert])
  else 
    AC_PATH_PROG(convert, [convert --version], no, $BINPATH)
    AC_CHECK_FILE(/usr/bin/convert.exe, convert="/usr/bin/convert")
    if test "$convert" != "no"; then
      AC_DEFINE_UNQUOTED(HAVE_CONVERT, 1, [Define if you have convert]) 
      AC_DEFINE_UNQUOTED(CONVERT_PATH, "${convert}", [Path to convert]) 
    fi
  fi
fi
 
AC_PATH_PROG(lpr, [lpr /dev/null], no, $BINPATH)
if test "$lpr" != "no"; then
  AC_DEFINE_UNQUOTED(HAVE_LPR, 1, [Define if you have lpr]) 
  AC_DEFINE_UNQUOTED(LPR_PATH, "${lpr}", [Path to lpr]) 
fi

#Find gv executable
AC_PATH_PROG(gv, [gv], no, $BINPATH)

if test "$gv" != "no"; then
  # Test gv version
  AC_MSG_CHECKING([gv version])
  gv_new="no";
  gv_version=`gv --version 2>&1`
  gv_test=`echo $gv_version | cut -d ' ' -f 1`
  if test "$gv_test" != "gv"; then
    gv_version=`gv -v 2>&1`
  fi
  gv_test=`echo $gv_version | cut -d ' ' -f 1`
  if test "$gv_test" != "gv"; then
    # No gv found.  Put an AC_PATH_PROG here so the "then" clause has
    # something to do and so that we get proper output to the user.
    AC_MSG_RESULT([gv version test likely exited with error, this is what it said: $gv_version])
  else
    gv_short_version=`echo $gv_version | cut -d ' ' -f 2`
    gv_major=`echo $gv_short_version | cut -d '.' -f 1`
    gv_minor=`echo $gv_short_version | cut -d '.' -f 2`
    gv_tiny=`echo $gv_short_version | cut -d '.' -f 3`
    if test "$gv_major" -gt 3; then
      gv_new="yes";
    elif test "$gv_major" -ge 3 -a "$gv_minor" -gt 6; then
      gv_new="yes";
    elif test "$gv_major" -ge 3 -a "$gv_minor" -ge 6 -a "$gv_tiny" -ge 1; then
      gv_new="yes";
    fi
    if test "$gv_new" != "no"; then
      AC_MSG_RESULT([new, >= 3.6.1])
      AC_DEFINE_UNQUOTED(HAVE_GV, 1, [Define if you have gv])
      AC_DEFINE_UNQUOTED(HAVE_NEW_GV, 1, [Define if you have old gv])
      AC_DEFINE_UNQUOTED(GV_PATH, "${gv}", [Path to gv])
    else
      AC_MSG_RESULT([old, pre 3.6.1])
      AC_DEFINE_UNQUOTED(HAVE_GV, 1, [Define if you have gv])
      AC_DEFINE_UNQUOTED(HAVE_OLD_GV, 1, [Define if you have old gv])
      AC_DEFINE_UNQUOTED(GV_PATH, "${gv}", [Path to gv])
    fi
  fi
fi

if test "$use_festival" != "no"; then 
 AC_PATH_PROG(festival, [festival], no, $BINPATH)
 if test "$festival" != "no"; then
   AC_DEFINE_UNQUOTED(HAVE_FESTIVAL, 1, [Define if you have festival])
 fi
fi

if test "$use_gpsman" != "no"; then
 AC_PATH_PROG(gpsman, [gpsman haslib gpsmanshp], no, $BINPATH)
 if test "$gpsman" != "no"; then
   AC_DEFINE_UNQUOTED(HAVE_GPSMAN, 1, [Define if you have gpsman])
   AC_DEFINE_UNQUOTED(GPSMAN_PATH, "${gpsman}", [Path to gpsman])
 fi
fi

if test "$use_err_popups" != "no"; then
 AC_DEFINE_UNQUOTED(HAVE_ERROR_POPUPS, 1, [Define if you have error popups enabled])
fi

if test "$use_lsb" != "no"; then
 AC_DEFINE_UNQUOTED(__LSB__, 1, [Define if you're compiling for Linux Standard Base])
fi



])

AC_DEFUN([XASTIR_CHECK_POSTGIS],
[
BINPATH="${PATH}${EXTRA_BIN_PATH}"
# test for postgresql
if test "${with_postgis+set}" = set; then
  PG_CONFIG="pg_config"
  if test "$with_postgis" != "yes"; then 
    # get path if provided
    pg_path="$with_postgis"
    PG_CONFIG_PATH="${pg_path}/bin"
    BINPATH="${BINPATH}:${PG_CONFIG_PATH}"
    POSTGIS_LIB_DIR="-L${pg_path}/lib"
    AC_PATH_PROG(PG_CONFIG, [pg_config], no, $PG_CONFIG_PATH)
  else 
    AC_PATH_PROG(PG_CONFIG, [pg_config], no)
  fi
  if test "$PG_CONFIG" != "no"; then
    # Check for postgis spatial extensions.
    # Look for lwpostgis.sql script in default location.
    # If found, is likely a postgis installation.
    # Need more definitive test for postgis, as this may fail to detect postgres 
    # installations where this script was removed, and will incorrectly 
    # detect postgres without postgis where this script has been installed but not run.
    AC_PATH_PROG(LWPOSTGIS, [lwpostgis.sql], no, "${pg_path}/share")
    if test "LWPOSTGIS" != "no"; then 
       #postgres with postgis enabled
       use_postgis=yes
       use_spatial_db=yes
       save_cppflags="$CPPFLAGS" 
       save_cxxflags="$CXXFLAGS" 
       save_libs="$LIBS" 
       save_ldflags="$LDFLAGS" 
       CPPFLAGS="$CPPFLAGS -I`${PG_CONFIG} --includedir` `${PG_CONFIG} --cppflags`" 
       CXXFLAGS="$CXXFLAGS `${PG_CONFIG} --cflags`" 
       LDFLAGS="$LDFLAGS `${PG_CONFIG} --ldflags`" 
       LIBS="${POSTGIS_LIB_DIR} `${PG_CONFIG} --libs` -lpq $LIBS" 
       AC_DEFINE(HAVE_POSTGIS, 1, Postgresql with postgis is present. )
    else
       AC_MSG_WARN(*** Cannot find lwpostgis.sql:  Building w/o Postgresql/Postgis support. ***)
       AC_MSG_WARN(*** Postgresql was found, but does not appear to have Postgis added.     ***)
       AC_MSG_WARN(*** Install and enable postgis and leave the lwpostgis.sql script in     ***)
       AC_MSG_WARN(*** ${pg_path}/share                                                     ***)
    fi
  else
    use_postgis=no
    AC_MSG_WARN(*** Cannot find pg_config:  Building w/o Postgresql/Postgis support. ***)
    AC_MSG_WARN(*** Specify the path to the posgresql installation directory         ***)
    AC_MSG_WARN(*** For example: --with-postgis=/usr/local/pgsql                     ***)
  fi
fi

])

AC_DEFUN([XASTIR_CHECK_MYSQL],
[
BINPATH="${PATH}${EXTRA_BIN_PATH}"

# test for MySQL
if test "${with_mysql+set}" = set; then
  MYSQL_CONFIG="mysql_config"
  if test "$with_mysql" != "yes"; then 
    # get path to mysql_config if provided
    mysql_path="$with_mysql"
    BINPATH="${BINPATH}:${mysql_path}"
    AC_PATH_PROG(MYSQL_CONFIG, [mysql_config], no, $mysql_path)
  else 
    AC_PATH_PROG(MYSQL_CONFIG, [mysql_config], no)
  fi
  use_mysql_spatial=no
  use_mysql_any=no
  if test "$MYSQL_CONFIG" != "no"; then
  
    # check for mysql version with spatial support 
    # look for mysql 4.1.2 or greater for spatial support 
    # and standardized prepared statements
    # 4.1.0 and 4.1.1 have spatial support, but only early versions
    # of prepared statement functions that changed in 4.1.2
    AC_MSG_CHECKING([mysql version >= 4.1.2])
    mysqlversion=`$MYSQL_CONFIG --version`
    mysqlversionmajor=`echo ${mysqlversion} | cut -d '.' -f 1`
    mysqlversionminor=`echo ${mysqlversion} | cut -d '.' -f 2`
    mysqlversiontiny=`echo ${mysqlversion} | cut -d '.' -f 3`
    if test "$mysqlversionmajor" -gt 4 ; then
      mysql_has_spatial="yes"
    elif test "$mysqlversionmajor" -ge 4 -a "$mysqlversionminor" -gt 1 ; then
      mysql_has_spatial="yes"
    elif test "$mysqlversionmajor" -ge 4 -a "$mysqlversionminor" -ge 1 -a "$mysqlversiontiny" -ge 2 ; then
      mysql_has_spatial="yes"
    else
      mysql_has_spatial="no"
    fi
    AC_MSG_RESULT($mysql_has_spatial)
    # if mysql version < 4.1, mysql present but no spatial support 
    if test "$mysql_has_spatial" = "yes"; then
       # mysql with spatial support
       use_mysql_spatial=yes
       use_spatial_db=yes
       AC_DEFINE(HAVE_MYSQL_SPATIAL, 1, MySQL with spatial support is present.)
    else 
       AC_MSG_WARN(*** MySQL version $mysqlversion detected is < 4.1.2         ***)
       AC_MSG_WARN(*** Spatial support enabled only for MySQL 4.1.2 and higher ***)
       AC_MSG_WARN(*** MySQL support for Lat/Long fields is available but      ***)
       AC_MSG_WARN(*** not for Points Polygons or other spatial objects.       ***)
    fi
    save_cppflags="$CPPFLAGS" 
    save_cxxflags="$CXXFLAGS" 
    save_libs="$LIBS" 
    CPPFLAGS="$CPPFLAGS `${MYSQL_CONFIG} --cflags`" 
    CXXFLAGS="$CXXFLAGS `${MYSQL_CONFIG} --cflags`" 
    LIBS=" `${MYSQL_CONFIG} --libs` $LIBS" 
    use_mysql_any=yes
    AC_DEFINE(HAVE_MYSQL, 1, MySQL is present.)
  else
    AC_MSG_WARN(*** Cannot find mysql_config:  Building w/o MySQL support. ***)
    AC_MSG_WARN(*** Specify the path to mysql_config                       ***)
    AC_MSG_WARN(*** For example: --with-mysql=/var/lib/mysql               ***)
  fi

fi
#AC_MSG_RESULT($use_mysql_spatial)
])



AC_DEFUN([XASTIR_CHECK_IMAGEMAGICK],
[
BINPATH="${PATH}${EXTRA_BIN_PATH}"

# Check for ImageMagick 
# 
# First look for the needed Magick-config script, which tells us all
# of the build options we need.
#
# Important: DO NOT use "use_imagemagick" as the variable here,
# because AC_CHECK_PROG will do nothing if the variable is already set!
#
use_imagemagick=no
AC_PATH_PROG(MAGIC_BIN, [MagickCore-config], no, $BINPATH)
if test "$MAGIC_BIN" != "no"; then
  use_imagemagick=yes
else
  AC_PATH_PROG(MAGIC_BIN, [Magick-config], no, $BINPATH)
  if test "$MAGIC_BIN" != "no"; then
    use_imagemagick=yes
  fi
#  AC_MSG_WARN(*** Cannot find Magick-config:  Building w/o ImageMagick support. ***)
fi

if test "${use_imagemagick}" = "yes"; then
#  #
#  # Compute the ImageMagick revision number
#  #
#  magickversion=`${MAGIC_BIN} --version` 
#  magickmajor=`echo $magickversion | cut -d '.' -f 1` 
#  magickminor=`echo $magickversion | cut -d '.' -f 2` 
#  magicktiny=`echo $magickversion | cut -d '.' -f 3` 
#  if test "$magickmajor" -lt 5; then 
#    magickold="yes"; 
#  elif test "$magickmajor" -eq 5 -a "$magickminor" -lt 4; then 
#    magickold="yes"; 
#  elif test "$magickmajor" -eq 5 -a "$magickminor" -eq 4 -a "$magicktiny" -lt 9; then 
#    magickold="yes"; 
#  fi
  #
  save_cppflags="$CPPFLAGS" 
  save_cxxflags="$CXXFLAGS" 
  save_libs="$LIBS" 
  save_ldflags="$LDFLAGS" 
  #
  # Figure out the build options using the Magick-config script
  #
  CPPFLAGS="$CPPFLAGS `${MAGIC_BIN} --cppflags`" 
  CXXFLAGS="$CXXFLAGS `${MAGIC_BIN} --cflags`" 
  LDFLAGS="$LDFLAGS `${MAGIC_BIN} --ldflags`" 
  LIBS="${MAGIC_LIB_DIR} `${MAGIC_BIN} --libs` $LIBS" 
  #
  AC_CHECK_HEADERS([MagickCore/MagickCore.h],[use_imagemagick="yes"],
                   [AC_CHECK_HEADERS([magick/api.h],[use_imagemagick="yes"],
                                     [use_imagemagick="no"])])

  if test "${use_imagemagick}" = "no"
  then
    AC_MSG_WARN([*** Cannot find ImageMagick include files:  Building w/o ImageMagick support. ***])
  else
    AC_MSG_CHECKING([if your ImageMagick is old enough for us to use])
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
    #ifdef HAVE_MAGICKCORE_MAGICKCORE_H
    #include <MagickCore/MagickCore.h>
    #else
    #include <magick/api.h>
    #endif
    #if (MagickLibVersion > 0x0700)
    #error Your Magick is way too new
    #endif
    ])],[AC_MSG_RESULT([yes])],
    [AC_MSG_RESULT([no])
     AC_MSG_WARN([***Your ImageMagick is too new and Xastir cannot use it***])
     use_imagemagick="no"
     ])
    if test "${use_imagemagick}" = "yes"
    then
      AC_SEARCH_LIBS([WriteImage],[Magick MagickCore], [AC_DEFINE(HAVE_IMAGEMAGICK, 1, [Imagemagick image library])], [use_imagemagick="no"])
      if test "${use_imagemagick}" = "no"
      then
        AC_MSG_WARN(*** Cannot find ImageMagick library files:  Building w/o ImageMagick support. ***)
      fi
    fi
  fi
  #
  if test "${use_imagemagick}" = "no"; then
    #
    # No ImageMagick found.  Restore variables.
    #
    CPPFLAGS=$save_cppflags 
    CXXFLAGS=$save_cxxflags 
    LIBS=$save_libs 
    LDFLAGS=$save_ldflags 
  fi 
fi
# End of ImageMagick checks 

])





AC_DEFUN([XASTIR_CHECK_GRAPHICSMAGICK],
[
BINPATH="${PATH}${EXTRA_BIN_PATH}"

# Check for GraphicsMagick 
# 
# First look for the needed GraphicsMagick-config script, which tells us all
# of the build options we need.
#
# Important: DO NOT use "use_graphicsmagick" as the variable here,
# because AC_CHECK_PROG will do nothing if the variable is already set!
#
use_graphicsmagick=no
AC_PATH_PROG(GMAGIC_BIN, [GraphicsMagick-config], no, $BINPATH)
if test "$GMAGIC_BIN" != "no"; then
  use_graphicsmagick=yes
#else
#  AC_MSG_WARN(*** Cannot find GraphicsMagick-config:  Building w/o GraphicsMagick support. ***)
fi
#
if test "${use_graphicsmagick}" = "yes"; then
  save_cppflags="$CPPFLAGS" 
  save_cxxflags="$CXXFLAGS" 
  save_cflags="$CFLAGS" 
  save_libs="$LIBS" 
  save_ldflags="$LDFLAGS" 
  #
  # Figure out the build options using the GraphicsMagick-config script
  #
  CPPFLAGS="`${GMAGIC_BIN} --cppflags` $CPPFLAGS" 
  CXXFLAGS="`${GMAGIC_BIN} --cflags` $CXXFLAGS" 
  CFLAGS="`${GMAGIC_BIN} --cflags` $CFLAGS" 
  LDFLAGS="`${GMAGIC_BIN} --ldflags` $LDFLAGS" 
  LIBS="${MAGIC_LIB_DIR} `${GMAGIC_BIN} --libs` $LIBS" 
  # 
  AC_CHECK_HEADERS([magick/api.h], [use_graphicsmagick="yes"],[use_graphicsmagick="no"])
  if test "${use_graphicsmagick}" = "no"; then
    AC_MSG_WARN(*** Cannot find GraphicsMagick include files: Building w/o GraphicsMagick support. ***)
  else
    AC_CHECK_LIB([GraphicsMagick], [WriteImage], AC_DEFINE(HAVE_GRAPHICSMAGICK, 1, [GraphicsMagick image library]), use_graphicsmagick="no")
    if test "${use_graphicsmagick}" = "no"; then
      AC_MSG_WARN(*** Cannot find GraphicsMagick library files: Building w/o GraphicsMagick support. ***)
    fi
  fi
  #
  if test "${use_graphicsmagick}" = "no"; then
    #
    # No GraphicsMagick found.  Restore variables.
    #
    CPPFLAGS=$save_cppflags 
    CXXFLAGS=$save_cxxflags 
    CFLAGS=$save_cflags 
    LIBS=$save_libs 
    LDFLAGS=$save_ldflags 
  fi
fi 
# 
# End of GraphicsMagick checks 

])





# things grabbed elsewhere

# this is from Squeak-3.2-4's acinclude.m4
AC_DEFUN([AC_CHECK_GMTOFF],
[AC_CACHE_CHECK([for gmtoff in struct tm], ac_cv_tm_gmtoff,
  AC_TRY_COMPILE([#include <time.h>],[struct tm tm; tm.tm_gmtoff;],
    ac_cv_tm_gmtoff="yes", ac_cv_tm_gmtoff="no"))
test "$ac_cv_tm_gmtoff" != "no" && AC_DEFINE(HAVE_TM_GMTOFF,,X)])

dnl Available from the GNU Autoconf Macro Archive at:
dnl http://www.gnu.org/software/ac-archive/htmldoc/acx_pthread.html
dnl
AC_DEFUN([ACX_PTHREAD], [
AC_REQUIRE([AC_CANONICAL_HOST])
AC_LANG_PUSH([C])
acx_pthread_ok=no

# We used to check for pthread.h first, but this fails if pthread.h
# requires special compiler flags (e.g. on True64 or Sequent).
# It gets checked for in the link test anyway.

# First of all, check if the user has set any of the PTHREAD_LIBS,
# etcetera environment variables, and if threads linking works using
# them:
if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
        save_CFLAGS="$CFLAGS"
        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
        save_LIBS="$LIBS"
        LIBS="$PTHREAD_LIBS $LIBS"
        AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
        AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
        AC_MSG_RESULT($acx_pthread_ok)
        if test x"$acx_pthread_ok" = xno; then
                PTHREAD_LIBS=""
                PTHREAD_CFLAGS=""
        fi
        LIBS="$save_LIBS"
        CFLAGS="$save_CFLAGS"
fi

# We must check for the threads library under a number of different
# names; the ordering is very important because some systems
# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
# libraries is broken (non-POSIX).

# Create a list of thread flags to try.  Items starting with a "-" are
# C compiler flags, and other items are library names, except for "none"
# which indicates that we try without any flags at all.

acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt"

# The ordering *is* (sometimes) important.  Some notes on the
# individual items follow:

# pthreads: AIX (must check this before -lpthread)
# none: in case threads are in libc; should be tried before -Kthread and
#       other compiler flags to prevent continual compiler warnings
# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
# -pthreads: Solaris/gcc
# -mthreads: Mingw32/gcc, Lynx/gcc
# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
#      doesn't hurt to check since this sometimes defines pthreads too;
#      also defines -D_REENTRANT)
# pthread: Linux, etcetera
# --thread-safe: KAI C++

case "${host_cpu}-${host_os}" in
        *solaris*)

        # On Solaris (at least, for some versions), libc contains stubbed
        # (non-functional) versions of the pthreads routines, so link-based
        # tests will erroneously succeed.  (We need to link with -pthread or
        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
        # a function called by this macro, so we could check for that, but
        # who knows whether they'll stub that too in a future libc.)  So,
        # we'll just look for -pthreads and -lpthread first:

        acx_pthread_flags="-pthread -pthreads pthread -mt $acx_pthread_flags"
        ;;
esac

if test x"$acx_pthread_ok" = xno; then
for flag in $acx_pthread_flags; do

        case $flag in
                none)
                AC_MSG_CHECKING([whether pthreads work without any flags])
                ;;

                -*)
                AC_MSG_CHECKING([whether pthreads work with $flag])
                PTHREAD_CFLAGS="$flag"
                ;;

                *)
                AC_MSG_CHECKING([for the pthreads library -l$flag])
                PTHREAD_LIBS="-l$flag"
                ;;
        esac

        save_LIBS="$LIBS"
        save_CFLAGS="$CFLAGS"
        LIBS="$PTHREAD_LIBS $LIBS"
        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"

        # Check for various functions.  We must include pthread.h,
        # since some functions may be macros.  (On the Sequent, we
        # need a special flag -Kthread to make this header compile.)
        # We check for pthread_join because it is in -lpthread on IRIX
        # while pthread_create is in libc.  We check for pthread_attr_init
        # due to DEC craziness with -lpthreads.  We check for
        # pthread_cleanup_push because it is one of the few pthread
        # functions on Solaris that doesn't have a non-functional libc stub.
        # We try pthread_create on general principles.
        AC_LINK_IFELSE(
          [AC_LANG_PROGRAM([[#include <pthread.h>]],
             [[pthread_t th; pthread_join(th, 0);
               pthread_attr_init(0); pthread_cleanup_push(0, 0);
               pthread_create(0,0,0,0); pthread_cleanup_pop(0);]])],
          [acx_pthread_ok=yes],
          [acx_pthread_ok=no])

        LIBS="$save_LIBS"
        CFLAGS="$save_CFLAGS"

        AC_MSG_RESULT($acx_pthread_ok)
        if test "x$acx_pthread_ok" = xyes; then
                break;
        fi

        PTHREAD_LIBS=""
        PTHREAD_CFLAGS=""
done
fi

# Various other checks:
if test "x$acx_pthread_ok" = xyes; then
        save_LIBS="$LIBS"
        LIBS="$PTHREAD_LIBS $LIBS"
        save_CFLAGS="$CFLAGS"
        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"

        # Detect AIX lossage: threads are created detached by default
        # and the JOINABLE attribute has a nonstandard name (UNDETACHED).
        AC_MSG_CHECKING([for joinable pthread attribute])
        AC_LINK_IFELSE(
          [AC_LANG_PROGRAM([[#include <pthread.h>]],
             [[int attr=PTHREAD_CREATE_JOINABLE;]])],
          [ok=PTHREAD_CREATE_JOINABLE],
          [ok=unknown])
        if test x"$ok" = xunknown; then
                AC_LINK_IFELSE(
                  [AC_LANG_PROGRAM([[#include <pthread.h>]],
                     [[int attr=PTHREAD_CREATE_UNDETACHED;]])],
                  [ok=PTHREAD_CREATE_UNDETACHED],
                  [ok=unknown])
        fi
        if test x"$ok" != xPTHREAD_CREATE_JOINABLE; then
                AC_DEFINE(PTHREAD_CREATE_JOINABLE, $ok,
                          [Define to the necessary symbol if this constant
                           uses a non-standard name on your system.])
        fi
        AC_MSG_RESULT(${ok})
        if test x"$ok" = xunknown; then
                AC_MSG_WARN([we do not know how to create joinable pthreads])
        fi

        AC_MSG_CHECKING([if more special flags are required for pthreads])
        flag=no
        case "${host_cpu}-${host_os}" in
                *-aix* | *-freebsd*)     flag="-D_THREAD_SAFE";;
                *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
        esac
        AC_MSG_RESULT(${flag})
        if test "x$flag" != xno; then
                PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
        fi

        LIBS="$save_LIBS"
        CFLAGS="$save_CFLAGS"

        # More AIX lossage: must compile with cc_r
        AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC})
else
        PTHREAD_CC="$CC"
fi

AC_SUBST(PTHREAD_LIBS)
AC_SUBST(PTHREAD_CFLAGS)
AC_SUBST(PTHREAD_CC)

# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
if test x"$acx_pthread_ok" = xyes; then
        ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
        :
else
        acx_pthread_ok=no
        $2
fi
AC_LANG_POP([C])
])dnl ACX_PTHREAD


#
AC_DEFUN([XASTIR_PATH_MOTIF], [
# New stuff to check for Motif/Lesstif.  Shamelessly borrowed from
# the opendx project. Opendx in turn snarfed their test from AC_PATH_X.

# Allow "--with-motif-includes" and "--with-motif-libs" so user can 
# force a specific set of includes.
AC_ARG_WITH(motif-includes, [  --with-motif-includes     Set path for motif includes (default none)],[with_motif_includes=$withval], [with_motif_includes=])
if test "$with_motif_includes" != "yes" && test -z "$with_motif_includes"
then
        with_motif_includes=
fi

AC_ARG_WITH(motif-libs, [  --with-motif-libs         Set path for motif libraries (default none)],[with_motif_libs=$withval], [with_motif_libs=])
if test "$with_motif_libs" != "yes" && test -z "$with_motif_libs"
then
  with_motif_libs=
fi

  # Guess where to find include files, by looking for this one Xm .h file.
  test -z "$xm_direct_test_include" && xm_direct_test_include=Xm/Xm.h

  # First, try using that file with no special directory specified.
AC_MSG_CHECKING([for Motif headers])
AC_PREPROC_IFELSE(
 [AC_LANG_SOURCE([[#include <$xm_direct_test_include>]])],
 [
  # We can compile using X headers with no special include directory.
  xm_includes=
  AC_MSG_RESULT([in default path])
 ],[
# that test didn't work, we need to hunt a little
# Look for the header file in a standard set of common directories.
# Check X11 before X11Rn because it is often a symlink to the current release.
  for ac_dir in               \
    /usr/X11/include          \
    /usr/X11R6/include        \
    /usr/X11R5/include        \
    /usr/X11R4/include        \
                              \
    /usr/include/X11          \
    /usr/include/X11R6        \
    /usr/include/X11R5        \
    /usr/include/X11R4        \
                              \
    /usr/local/X11/include    \
    /usr/local/X11R6/include  \
    /usr/local/X11R5/include  \
    /usr/local/X11R4/include  \
                              \
    /usr/local/include/X11    \
    /usr/local/include/X11R6  \
    /usr/local/include/X11R5  \
    /usr/local/include/X11R4  \
                              \
    /usr/X386/include         \
    /usr/x386/include         \
    /usr/XFree86/include/X11  \
                              \
    /usr/include              \
    /usr/local/include        \
    /usr/unsupported/include  \
    /usr/athena/include       \
    /usr/local/x11r5/include  \
    /usr/lpp/Xamples/include  \
                              \
    /usr/openwin/include      \
    /usr/openwin/share/include \
    "$with_motif_includes"    \
    ; \
  do
    if test -r "$ac_dir/$xm_direct_test_include"; then
      xm_includes=$ac_dir
      AC_MSG_RESULT([in $xm_includes])
      break
    fi
  done
  if test "x$xm_includes" = "x"; then
    AC_MSG_ERROR([**** NO MOTIF HEADERS FOUND **** install Motif  development headers or use --with-motif-includes to specify location of Xm/Xm.h ])
  fi
])
  # Check for the libraries.

  AC_MSG_CHECKING([for Motif libraries])
  test -z "$xm_direct_test_library" && xm_direct_test_library=Xm
  test -z "$xm_direct_test_function" && xm_direct_test_function=XmGetDestination

  # See if we find them without any special options.
  # Don't add to $LIBS permanently.
  ac_save_LIBS="$LIBS"
  LIBS="-l$xm_direct_test_library $LIBS"
AC_LINK_IFELSE([AC_LANG_PROGRAM([
  [#include <$xm_direct_test_include>
   #include <X11/Xlib.h>
     ]],
  [[Display *foobar; ${xm_direct_test_function}(foobar)]])],
 [
  LIBS="$ac_save_LIBS"
  # We can link Motif programs with no special library path.
  xm_libraries=
  AC_MSG_RESULT([in default path])
 ],[
 LIBS="$ac_save_LIBS"
# First see if replacing the include by lib works.
# Check X11 before X11Rn because it is often a symlink to the current release.
for ac_dir in `echo "$xm_includes" | sed s/include/lib/` \
    /usr/X11/lib          \
    /usr/X11R6/lib        \
    /usr/X11R5/lib        \
    /usr/X11R4/lib        \
                          \
    /usr/lib/X11          \
    /usr/lib/X11R6        \
    /usr/lib/X11R5        \
    /usr/lib/X11R4        \
                          \
    /usr/local/X11/lib    \
    /usr/local/X11R6/lib  \
    /usr/local/X11R5/lib  \
    /usr/local/X11R4/lib  \
                          \
    /usr/local/lib/X11    \
    /usr/local/lib/X11R6  \
    /usr/local/lib/X11R5  \
    /usr/local/lib/X11R4  \
                          \
    /usr/X386/lib         \
    /usr/x386/lib         \
    /usr/XFree86/lib/X11  \
                          \
    /usr/lib              \
    /usr/local/lib        \
    /usr/unsupported/lib  \
    /usr/athena/lib       \
    /usr/local/x11r5/lib  \
    /usr/lpp/Xamples/lib  \
    /lib/usr/lib/X11	  \
                          \
    /usr/openwin/lib      \
    /usr/openwin/share/lib \
    "$with_motif_libs"     \
    ; \
do
dnl Don't even attempt the hair of trying to link an X program!
  for ac_extension in a so sl; do
    if test -r $ac_dir/lib${xm_direct_test_library}.$ac_extension; then
      xm_libraries=$ac_dir
      AC_MSG_RESULT([in $xm_libraries])
      break 2
    fi
  done
done
if test "x$xm_libraries" = "x"; then
 AC_MSG_ERROR([**** MOTIF LIBRARIES NOT FOUND **** Install Motif development headers/libraries or use --with-motif-libraries to specify path to libXm.a ])
fi
])
])

# From Cyrus imap distribution (KB3EGH)

dnl These are the Cyrus Berkeley DB macros.  In an ideal world these would be
dnl identical to the above.

dnl They are here so that they can be shared between Cyrus IMAPd
dnl and Cyrus SASL with relative ease.

dnl The big difference between this and the ones above is that we don't assume
dnl that we know the name of the library, and we try a lot of permutations
dnl instead.  We also assume that DB4 is acceptable.

dnl When we're done, there will be a BDB_LIBADD and a BDB_INCADD which should
dnl be used when necessary.  We should probably be smarter about our RPATH
dnl handling.

dnl Call these with XASTIR_BERKELEY_DB_CHK.

dnl We will also set $dblib to "berkeley" if we are successful, "no" otherwise.

dnl this is unbelievably painful due to confusion over what db-3 should be
dnl named and where the db-3 header file is located.  arg.
AC_DEFUN([XASTIR_BERKELEY_DB_CHK_LIB],
[


# We need to add the following algorithm here:
#
#   Find the db.h file, grep for DB_VERSION_MAJOR and
#     DB_VERSION_MINOR.  In my case I get this:
#
#       #define DB_VERSION_MAJOR        4
#       #define DB_VERSION_MINOR        1
#
#   Find the libdb.so file that Xastir would link to.  Find the
#     version via the target of the symlink?  In my case I have
#     this:
#
#       > ls -al libdb.so
#       lrwxrwxrwx 1 root root 12 2004-01-07 11:29 libdb.so -> libdb-4.
#
#   Compare the major/minor numbers.  If they match, we're good to
#   go.  If not, don't compile in libdb support.  Perhaps we could
#   just run ldd on the test code to get the version number of the
#   linked library instead?
#
# Another possible way to do it would be to create test code and
# compile/run it which would open/write/read/close/delete a
# database.  That should help to prove that Xastir would run ok if
# the library were used.



	BDB_SAVE_LDFLAGS=$LDFLAGS

	if test -d $with_bdb_lib; then
	    LDFLAGS="-L$with_bdb_lib $LDFLAGS"
	    BDB_LIBADD="-L$with_bdb_lib $BDB_LIBADD"
	else
	    BDB_LIBADD=""
	fi

	saved_LIBS=$LIBS
# Removed db-3.3 db3.3 db33 db-3.2 db3.2 db32 db-3.1 db3.1 db31 db-3 db30 db3 
# from the probe.  The map_cache.c code explicitly bombs if it doesn't have
# version 4 or above, so why probe for version 3?

# it would be nice if this could be done with AC_SEARCH_LIBS but that doesn't
# work as it appears that there is some C++-type name mangling going on,
# and just probing for a library that contains "db_create" fails.  One needs
# to specify the function call with the full prototype for it to be found.
        BDB_LIB_FOUND="none"
        AC_MSG_CHECKING([for a library containing db_create])
        for dbname in db-5.3 db5.3 db53 db-5.2 db5.2 db52 db-5.1 db5.1 db51 db-5.0 db5.0 db50 db-4.9 db4.9 db49 db-4.8 db4.8 db48 db-4.7 db4.7 db47 db-4.6 db4.6 db46 db-4.5 db4.5 db45 db-4.4 db4.4 db44 db-4.3 db4.3 db43 db-4.2 db4.2 db42 db-4.1 db4.1 db41 db-4.0 db4.0 db-4 db40 db4 db
          do
	    LIBS="$saved_LIBS -l$dbname"
      AC_LINK_IFELSE(
        [AC_LANG_PROGRAM([[#include <db.h>]],
           [[db_create(NULL, NULL, 0);]])],
        [BDB_LIBADD="$BDB_LIBADD -l$dbname"; dblib="berkeley"; 
                BDB_LIB_FOUND="-l$dbname"],
        [dblib="no"])
#         STOP if we find one.  Otherwise we'll keep stepping through the 
#         list and resetting dblib to "no" over and over.
          if test $dblib = "berkeley" ; then
            break;
          fi
          done
        AC_MSG_RESULT([$BDB_LIB_FOUND])

	LIBS=$saved_LIBS

	LDFLAGS=$BDB_SAVE_LDFLAGS
])

AC_DEFUN([XASTIR_BERKELEY_DB_OPTS],
[
AC_ARG_WITH(bdb-libdir,
	[  --with-bdb-libdir=DIR     Berkeley DB lib files are in DIR],
	with_bdb_lib=$withval,
	[ test "${with_bdb_lib+set}" = set || with_bdb_lib=none])
AC_ARG_WITH(bdb-incdir,
	[  --with-bdb-incdir=DIR     Berkeley DB include files are in DIR],
	with_bdb_inc=$withval,
	[ test "${with_bdb_inc+set}" = set || with_bdb_inc=none ])
])

AC_DEFUN([XASTIR_BERKELEY_DB_CHK],
[
	AC_REQUIRE([XASTIR_BERKELEY_DB_OPTS])

	xastir_save_CPPFLAGS=$CPPFLAGS

	if test -d $with_bdb_inc; then
	    CPPFLAGS="$CPPFLAGS -I$with_bdb_inc"
	    BDB_INCADD="-I$with_bdb_inc"
	else
	    BDB_INCADD=""
	fi

	dnl Note that FreeBSD puts it in a weird place 
        dnl (/usr/local/include/db42)
        dnl (but they should use with-bdb-incdir)
# Commented out because it doesn't distinguish between versions of db.h
# that can work with xastir and versions that can't.  It is possible to 
# have multiple versions of db installed in different places, pick up the 
# header for one and the library for another.  Bleah.
#        AC_CHECK_HEADER(db.h,
#                        [XASTIR_BERKELEY_DB_CHK_LIB()],
#                        dblib="no")
#
# Do this instead --- check to see if the db.h we find first in the search
# path will actually pass the test we do in map_cache.c.  Don't even bother
# looking for a library if not.  
        AC_MSG_CHECKING([if db.h is exists and is usable])
        AC_TRY_COMPILE([#include <db.h>],
                       [#if (DB_VERSION_MAJOR < 4 )
                        #error DB_VERSION_MAJOR < 4
                        #endif],
                        [AC_MSG_RESULT([yes])
                        XASTIR_BERKELEY_DB_CHK_LIB()],
                        [AC_MSG_RESULT([no]); dblib="no"])
	CPPFLAGS=$xastir_save_CPPFLAGS

    use_map_cache="no"
    if test "${dblib}" = "berkeley"; then
        LIBS="$BDB_LIBADD $LIBS"
	CPPFLAGS="$CPPFLAGS $BDB_INCADD"
        AC_DEFINE(USE_MAP_CACHE, 1, [Berkeley DB Map Caching])
        use_map_cache="yes"
    fi
 
])


