dnl Process this file with autoconf to produce a configure script.

dnl Prolog

AC_INIT(NXlib.h)
AC_PREREQ(2.13)

pkgconfigdir=${libdir}/pkgconfig
AC_SUBST(pkgconfigdir)

dnl Reset default compilation flags.

CXXFLAGS="$CXXFLAGS -O3"
CFLAGS="$CFLAGS -O3"

dnl Reset default linking directives.

LIBSTATIC=""
LIBSHARED=""

dnl Prefer headers and libraries from nx-X11, if present.

if test -d "../nx-X11/include" ; then
    CXXFLAGS="$CXXFLAGS -I../nx-X11/exports/include -I../nx-X11/lib/X11 \
                        -I../nx-X11/include -I../nx-X11/programs/Xserver/include"
    CFLAGS="$CFLAGS -I../nx-X11/exports/include -I../nx-X11/lib/X11 \
                    -I../nx-X11/include -I../nx-X11/programs/Xserver/include"
    LDFLAGS="$LDFLAGS -L../nx-X11/exports/lib"
fi

X_CFLAGS=`pkg-config --cflags-only-I pixman-1`

dnl Check for programs.

AC_PROG_CXX
AC_PROG_CC
AC_LANG_CPLUSPLUS

dnl Check for BSD compatible install.

AC_PROG_INSTALL

dnl Check for extra header files.

AC_PATH_XTRA

dnl Custom addition.
ac_help="$ac_help
  --with-symbols          add the -g flag to produce the debug symbols
  --with-info             enable basic log output to trace the program
  --with-valgrind         clean up allocated buffers to avoid valgrind warnings
  --with-version          use this version for produced libraries

  --with-static-png       enable static linking of PNG library
  --with-static-jpeg      enable static linking of JPEG library"

dnl Check to see if we're running under Cygwin32.

AC_DEFUN(nxproxy_CYGWIN32,
[AC_CACHE_CHECK(for Cygwin32 environment, nxproxy_cv_cygwin32,
[AC_TRY_COMPILE(,[return __CYGWIN32__;],
nxproxy_cv_cygwin32=yes, nxproxy_cv_cygwin32=no)
rm -f conftest*])
CYGWIN32=
test "$nxproxy_cv_cygwin32" = yes && CYGWIN32=yes])

dnl CygWin32 requires the stdc++ library explicitly linked.

nxproxy_CYGWIN32
if test "$CYGWIN32" = yes; then
    LIBS="$LIBS -mwindows -lstdc++"
fi

dnl Check whether we're building on a AMD64.

AC_DEFUN(nxconf_AMD64,
[AC_CACHE_CHECK(for Amd64 environment, nxconf_cv_amd64,
[AC_TRY_COMPILE(,[return (__amd64__ || __x86_64__);],
nxconf_cv_amd64=yes, nxconf_cv_amd64=no)
rm -f conftest*])
AMD64=
test "$nxconf_cv_amd64" = yes && AMD64=yes])
nxconf_AMD64

dnl Check to see if we're running under Solaris.

AC_DEFUN(nxconf_SUN,
[AC_CACHE_CHECK(for SunOS environment, nxconf_cv_sun,
[AC_TRY_COMPILE(,[return __sun;],
nxconf_cv_sun=yes, nxconf_cv_sun=no)
rm -f conftest*])
SUN=
test "$nxconf_cv_sun" = yes && SUN=yes])
nxconf_SUN

if test "$SUN" = yes; then
  CFLAGS="$CFLAGS -I/usr/sfw/include"
fi

if test "$SUN" = yes; then
  LDFLAGS="$LDFLAGS -G -h \$(LIBLOAD) -L/usr/sfw/lib" 
else
  LDFLAGS="$LDFLAGS -shared -Wl,-soname,\$(LIBLOAD)"
fi

dnl Check to see if we're running under FreeBSD.

AC_DEFUN(nxconf_FreeBSD,
[AC_CACHE_CHECK(for FreeBSD environment, nxconf_cv_freebsd,
[AC_TRY_COMPILE(,[return __FreeBSD__;],
nxconf_cv_freebsd=yes, nxconf_cv_freebsd=no)
rm -f conftest*])
FreeBSD=
test "$nxconf_cv_freebsd" = yes && FreeBSD=yes])
nxconf_FreeBSD

dnl Build PIC libraries.

if test "$CYGWIN32" != yes -a "$DARWIN" != yes; then
  CXXFLAGS="$CXXFLAGS -fPIC"
  CFLAGS="$CFLAGS -fPIC"
fi

dnl On FreeBSD search libraries and includes under /usr/local.

if test "$FreeBSD" = yes; then
  LIBS="$LIBS  -L/usr/local/lib"
  CXXFLAGS="$CXXFLAGS -I/usr/local/include"
  CFLAGS="$CFLAGS -I/usr/local/include"
fi

dnl Check whether --with-static-png  was
dnl given and add -lpng or libpng.a to linking.

if test "${with_static_png}" = yes; then
  echo -e "enabling static linking of PNG library"
  if test "$CYGWIN32" = yes; then
    LIBS="$LIBSTATIC -static -lpng"
  else
    if test -f "/usr/lib/libpng.a" ; then
      LIBS="/usr/lib/libpng.a $LIBS"
    else
      if test -f "/usr/local/lib/libpng.a" ; then
        echo -e "assuming libpng.a in /usr/local/lib"
        LIBS="/usr/local/lib/libpng.a $LIBS"
      else
        echo -e "assuming libpng.a in default linker path"
        LIBS="libpng.a $LIBS"
      fi
    fi
  fi
else
  echo -e "enabling dynamic linking of PNG library"
  LIBS="-lpng $LIBS"
fi

dnl Check whether --with-static-jpeg  was
dnl given and add -ljpeg or libjpeg.a to linking.
if test "${with_static_jpeg}" = yes; then
  echo -e "enabling static linking of JPEG library"
  if test "$CYGWIN32" = yes; then
    LIBSTATIC="$LIBS -static -ljpeg"
  else
    if test -f "/usr/lib/libjpeg.a" ; then
      LIBS="/usr/lib/libjpeg.a $LIBS"
    else
      if test -f "/usr/local/lib/libjpeg.a" ; then
        echo -e "assuming libjpeg.a in /usr/local/lib"
        LIBS="/usr/local/lib/libjpeg.a $LIBS"
      else
        echo -e "assuming libjpeg.a in default linker path"
        LIBS="libjpeg.a $LIBS"
      fi
    fi
  fi
else
  echo -e "enabling dynamic linking of JPEG library"
  LIBS="-ljpeg $LIBS"
fi

dnl Check whether --with-symbols or --without-symbols was
dnl given and set the required optimization level.
if test "${with_symbols}" = yes; then
  echo -e "enabling production of debug symbols"
  CXXFLAGS="-g $CXXFLAGS"
  CFLAGS="-g $CFLAGS"
else
  echo -e "disabling production of debug symbols"
fi

dnl Check whether --with-info or --without-info was given.
if test "${with_info}" = yes; then
  echo -e "enabling info output in the log file"
  CXXFLAGS="$CXXFLAGS -DINFO"
  CFLAGS="$CFLAGS -DINFO"
else
  echo -e "disabling info output in the log file"
fi

dnl Check whether --with-valgrind or --without-valgrind was given.
if test "${with_valgrind}" = yes; then
  echo -e "enabling valgrind memory checker workarounds"
  CXXFLAGS="$CXXFLAGS -DVALGRIND"
  CFLAGS="$CFLAGS -DVALGRIND"
else
  echo -e "disabling valgrind memory checker workarounds"
fi

dnl Check whether --with-version was given.
AC_SUBST(LIBVERSION)
AC_SUBST(VERSION)
if test "${with_version}" = yes; then
  VERSION=${ac_option}
else
  VERSION=`cat VERSION`
fi
echo -e "compiling version ${VERSION}"

LIBVERSION=`echo ${VERSION} | cut -d '.' -f 1`

CXXFLAGS="$CXXFLAGS -DVERSION=\\\"${VERSION}\\\""
CFLAGS="$CFLAGS -DVERSION=\\\"${VERSION}\\\""

dnl Find makedepend somewhere.

AC_SUBST(MAKEDEPEND)
MAKEDEPEND="$(which makedepend)"

# Try to desperately find makedepend.
# Set MAKEDEPEND to the shipped makedepend binary. This will not
# exist in nx-libs-lite, though, in which case MAKEDEPEND
# will stay empty.
if test -z "${MAKEDEPEND}"; then
  if test -x "../nx-X11/config/makedepend/makedepend"; then
    MAKEDEPEND="../nx-X11/config/makedepend/makedepend"
  fi
fi

dnl Determine what to build based on the platform.
dnl Override the LIBS settings on Cygwin32 so that
dnl we always link with the exact set of libraries.

AC_SUBST(ALL)

if test "$CYGWIN32" = yes; then
    ALL="\$(LIBCYGARCHIVE) \$(LIBCYGSHARED) \$(LIBARCHIVE)"
else
    ALL="\$(LIBFULL) \$(LIBLOAD) \$(LIBSHARED) \$(LIBARCHIVE)"
fi

AC_OUTPUT(Makefile nxcompext.pc)