Some auto-foo for python support.

3 files changed, 217 insertions, 4 deletions

diff --git a/src/Makefile.in b/src/Makefile.in
index b299dd6..bba2d7e 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -29,11 +29,11 @@ ETCSCREENRC = $(prefix)/etc/screenrc
 SCREENENCODINGS = $(datadir)/screen/utf8encodings
 
 CC = @CC@
-CFLAGS = @CFLAGS@ @LUA_CFLAGS@
+CFLAGS = @CFLAGS@ @LUA_CFLAGS@ @PYTHON_INCLUDES@
 CPPFLAGS = @CPPFLAGS@ -DETCSCREENRC='"$(ETCSCREENRC)"' \
            -DSCREENENCODINGS='"$(SCREENENCODINGS)"'
 LDFLAGS = @LDFLAGS@
-LIBS = @LIBS@ @LUA_LIBS@
+LIBS = @LIBS@ @LUA_LIBS@ @PYTHON_LIBS@
 
 CPP=@CPP@
 CPP_DEPEND=$(CC) -MM
@@ -61,12 +61,12 @@ CFILES=	screen.c ansi.c fileio.c mark.c misc.c resize.c socket.c \
 	search.c tty.c term.c window.c utmp.c loadav.c putenv.c help.c \
 	termcap.c input.c attacher.c pty.c process.c display.c comm.c \
 	kmapdef.c acls.c braille.c braille_tsi.c logfile.c layer.c \
-	sched.c teln.c nethack.c encoding.c lua.c script.c
+	sched.c teln.c nethack.c encoding.c lua.c script.c python.c
 OFILES=	screen.o ansi.o fileio.o mark.o misc.o resize.o socket.o \
 	search.o tty.o term.o window.o utmp.o loadav.o putenv.o help.o \
 	termcap.o input.o attacher.o pty.o process.o display.o comm.o \
 	kmapdef.o acls.o braille.o braille_tsi.o logfile.o layer.o \
-	sched.o teln.o nethack.o encoding.o lua.o script.o
+	sched.o teln.o nethack.o encoding.o lua.o script.o python.o
 
 all:	screen
 
diff --git a/src/acinclude.m4 b/src/acinclude.m4
new file mode 100644
index 0000000..8cc86f7
--- /dev/null
+++ b/src/acinclude.m4
@@ -0,0 +1,210 @@
+# Ripped from pygobject-2.0
+#
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004
+# Free Software Foundation, Inc.
+
+# 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 2, 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, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+# AM_PATH_PYTHON([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+
+# Adds support for distributing Python modules and packages.  To
+# install modules, copy them to $(pythondir), using the python_PYTHON
+# automake variable.  To install a package with the same name as the
+# automake package, install to $(pkgpythondir), or use the
+# pkgpython_PYTHON automake variable.
+
+# The variables $(pyexecdir) and $(pkgpyexecdir) are provided as
+# locations to install python extension modules (shared libraries).
+# Another macro is required to find the appropriate flags to compile
+# extension modules.
+
+# If your package is configured with a different prefix to python,
+# users will have to add the install directory to the PYTHONPATH
+# environment variable, or create a .pth file (see the python
+# documentation for details).
+
+# If the MINIMUM-VERSION argument is passed, AM_PATH_PYTHON will
+# cause an error if the version of python installed on the system
+# doesn't meet the requirement.  MINIMUM-VERSION should consist of
+# numbers and dots only.
+
+AC_DEFUN([AM_PATH_PYTHON],
+ [
+  dnl Find a Python interpreter.  Python versions prior to 1.5 are not
+  dnl supported because the default installation locations changed from
+  dnl $prefix/lib/site-python in 1.4 to $prefix/lib/python1.5/site-packages
+  dnl in 1.5.
+  m4_define([_AM_PYTHON_INTERPRETER_LIST],
+            [python2.5 python python2 python2.4 python2.3 python2.2 dnl
+python2.1 python2.0 python1.6 python1.5])
+
+  m4_if([$1],[],[
+    dnl No version check is needed.
+    # Find any Python interpreter.
+    if test -z "$PYTHON"; then
+      PYTHON=:
+      AC_PATH_PROGS([PYTHON], _AM_PYTHON_INTERPRETER_LIST)
+    fi
+    am_display_PYTHON=python
+  ], [
+    dnl A version check is needed.
+    if test -n "$PYTHON"; then
+      # If the user set $PYTHON, use it and don't search something else.
+      AC_MSG_CHECKING([whether $PYTHON version >= $1])
+      AM_PYTHON_CHECK_VERSION([$PYTHON], [$1],
+			      [AC_MSG_RESULT(yes)],
+			      [AC_MSG_ERROR(too old)])
+      am_display_PYTHON=$PYTHON
+    else
+      # Otherwise, try each interpreter until we find one that satisfies
+      # VERSION.
+      AC_CACHE_CHECK([for a Python interpreter with version >= $1],
+	[am_cv_pathless_PYTHON],[
+	for am_cv_pathless_PYTHON in _AM_PYTHON_INTERPRETER_LIST none; do
+	  test "$am_cv_pathless_PYTHON" = none && break
+	  AM_PYTHON_CHECK_VERSION([$am_cv_pathless_PYTHON], [$1], [break])
+	done])
+      # Set $PYTHON to the absolute path of $am_cv_pathless_PYTHON.
+      if test "$am_cv_pathless_PYTHON" = none; then
+	PYTHON=:
+      else
+        AC_PATH_PROG([PYTHON], [$am_cv_pathless_PYTHON])
+      fi
+      am_display_PYTHON=$am_cv_pathless_PYTHON
+    fi
+  ])
+
+  if test "$PYTHON" = :; then
+  dnl Run any user-specified action, or abort.
+    m4_default([$3], [AC_MSG_ERROR([no suitable Python interpreter found])])
+  else
+
+  dnl Query Python for its version number.  Getting [:3] seems to be
+  dnl the best way to do this; it's what "site.py" does in the standard
+  dnl library.
+
+  AC_CACHE_CHECK([for $am_display_PYTHON version], [am_cv_python_version],
+    [am_cv_python_version=`$PYTHON -c "import sys; print sys.version[[:3]]"`])
+  AC_SUBST([PYTHON_VERSION], [$am_cv_python_version])
+
+  dnl Use the values of $prefix and $exec_prefix for the corresponding
+  dnl values of PYTHON_PREFIX and PYTHON_EXEC_PREFIX.  These are made
+  dnl distinct variables so they can be overridden if need be.  However,
+  dnl general consensus is that you shouldn't need this ability.
+
+  AC_SUBST([PYTHON_PREFIX], ['${prefix}'])
+  AC_SUBST([PYTHON_EXEC_PREFIX], ['${exec_prefix}'])
+
+  dnl At times (like when building shared libraries) you may want
+  dnl to know which OS platform Python thinks this is.
+
+  AC_CACHE_CHECK([for $am_display_PYTHON platform], [am_cv_python_platform],
+    [am_cv_python_platform=`$PYTHON -c "import sys; print sys.platform"`])
+  AC_SUBST([PYTHON_PLATFORM], [$am_cv_python_platform])
+
+
+  dnl Set up 4 directories:
+
+  dnl pythondir -- where to install python scripts.  This is the
+  dnl   site-packages directory, not the python standard library
+  dnl   directory like in previous automake betas.  This behavior
+  dnl   is more consistent with lispdir.m4 for example.
+  dnl Query distutils for this directory.  distutils does not exist in
+  dnl Python 1.5, so we fall back to the hardcoded directory if it
+  dnl doesn't work.
+  AC_CACHE_CHECK([for $am_display_PYTHON script directory],
+    [am_cv_python_pythondir],
+    [am_cv_python_pythondir=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_python_lib(0,0,prefix='$PYTHON_PREFIX')" 2>/dev/null ||
+     echo "$PYTHON_PREFIX/lib/python$PYTHON_VERSION/site-packages"`])
+  AC_SUBST([pythondir], [$am_cv_python_pythondir])
+
+  dnl pkgpythondir -- $PACKAGE directory under pythondir.  Was
+  dnl   PYTHON_SITE_PACKAGE in previous betas, but this naming is
+  dnl   more consistent with the rest of automake.
+
+  AC_SUBST([pkgpythondir], [\${pythondir}/$PACKAGE])
+
+  dnl pyexecdir -- directory for installing python extension modules
+  dnl   (shared libraries)
+  dnl Query distutils for this directory.  distutils does not exist in
+  dnl Python 1.5, so we fall back to the hardcoded directory if it
+  dnl doesn't work.
+  AC_CACHE_CHECK([for $am_display_PYTHON extension module directory],
+    [am_cv_python_pyexecdir],
+    [am_cv_python_pyexecdir=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_python_lib(1,0,prefix='$PYTHON_EXEC_PREFIX')" 2>/dev/null ||
+     echo "${PYTHON_EXEC_PREFIX}/lib/python${PYTHON_VERSION}/site-packages"`])
+  AC_SUBST([pyexecdir], [$am_cv_python_pyexecdir])
+
+  dnl pkgpyexecdir -- $(pyexecdir)/$(PACKAGE)
+
+  AC_SUBST([pkgpyexecdir], [\${pyexecdir}/$PACKAGE])
+
+  dnl Run any user-specified action.
+  $2
+  fi
+
+])
+
+
+# AM_PYTHON_CHECK_VERSION(PROG, VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
+# ---------------------------------------------------------------------------
+# Run ACTION-IF-TRUE if the Python interpreter PROG has version >= VERSION.
+# Run ACTION-IF-FALSE otherwise.
+# This test uses sys.hexversion instead of the string equivalent (first
+# word of sys.version), in order to cope with versions such as 2.2c1.
+# hexversion has been introduced in Python 1.5.2; it's probably not
+# worth to support older versions (1.5.1 was released on October 31, 1998).
+AC_DEFUN([AM_PYTHON_CHECK_VERSION],
+ [prog="import sys, string
+# split strings by '.' and convert to numeric.  Append some zeros
+# because we need at least 4 digits for the hex conversion.
+minver = map(int, string.split('$2', '.')) + [[0, 0, 0]]
+minverhex = 0
+for i in xrange(0, 4): minverhex = (minverhex << 8) + minver[[i]]
+sys.exit(sys.hexversion < minverhex)"
+  AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$3], [$4])])
+
+dnl a macro to check for ability to create python extensions
+dnl  AM_CHECK_PYTHON_HEADERS([ACTION-IF-POSSIBLE], [ACTION-IF-NOT-POSSIBLE])
+dnl function also defines PYTHON_INCLUDES
+AC_DEFUN([AM_CHECK_PYTHON_HEADERS],
+[AC_REQUIRE([AM_PATH_PYTHON])
+AC_MSG_CHECKING(for headers required to compile python extensions)
+dnl deduce PYTHON_INCLUDES
+py_prefix=`$PYTHON -c "import sys; print sys.prefix"`
+py_exec_prefix=`$PYTHON -c "import sys; print sys.exec_prefix"`
+if test -x "$PYTHON-config"; then
+PYTHON_INCLUDES=`$PYTHON-config --includes 2>/dev/null`
+PYTHON_LIBS=`$PYTHON-config --libs 2>/dev/null`
+else
+PYTHON_INCLUDES="-I${py_prefix}/include/python${PYTHON_VERSION}"
+if test "$py_prefix" != "$py_exec_prefix"; then
+  PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_exec_prefix}/include/python${PYTHON_VERSION}"
+fi
+fi
+AC_SUBST(PYTHON_INCLUDES)
+AC_SUBST(PYTHON_LIBS)
+dnl check if the headers exist:
+save_CPPFLAGS="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES"
+AC_TRY_CPP([#include <Python.h>],dnl
+[AC_MSG_RESULT(found)
+$1],dnl
+[AC_MSG_RESULT(not found)
+$2])
+CPPFLAGS="$save_CPPFLAGS"
+])
+
diff --git a/src/configure.in b/src/configure.in
index 2f24c2b..c611af9 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -1295,6 +1295,9 @@ PKG_CHECK_MODULES(LUA, [lua5.1], , [
 *** (http://git.savannah.gnu.org/gitweb/?p=screen.git;a=summary).
 ])])
 
+AM_CHECK_PYTHON_HEADERS(, [AC_MSG_ERROR(could not find Python headers.)])
+AC_SUBST(PYTHON_INCLUDES)
+
 AC_SUBST(LUA_CFLAGS)
 AC_SUBST(LUA_LIBS)