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From 430893ea1bad2245f00d44fef62bbfb75db27f96 Mon Sep 17 00:00:00 2001
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: Mon, 4 May 2009 14:39:18 +0200
Subject: [PATCH] add cross compilation support
This patch adds preliminary cross compilation support to python.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
Lib/distutils/sysconfig.py | 11 +++++++++--
Makefile.pre.in | 12 ++++++++----
configure.in | 31 ++++++++++++++++++++++++++++---
setup.py | 6 +++++-
4 files changed, 50 insertions(+), 10 deletions(-)
diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
index a00b2f9..b1091da 100644
--- a/Lib/distutils/sysconfig.py
+++ b/Lib/distutils/sysconfig.py
@@ -19,9 +19,16 @@ import sys
from distutils.errors import DistutilsPlatformError
# These are needed in a couple of spots, so just compute them once.
-PREFIX = os.path.normpath(sys.prefix)
-EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
EXECUTABLE_DIRNAME = os.path.dirname(os.path.abspath(sys.executable))
+if os.environ.get('CROSS_COMPILING') == 'yes':
+ _sysroot=os.environ.get('_python_sysroot')
+ PREFIX = os.path.normpath(_sysroot + os.environ.get('_python_prefix'))
+ EXEC_PREFIX = os.path.normpath(_sysroot + os.environ.get('_python_exec_prefix'))
+ if '_python_srcdir' in os.environ:
+ EXECUTABLE_DIRNAME = os.path.normpath(os.environ['_python_srcdir'])
+else:
+ PREFIX = os.path.normpath(sys.prefix)
+ EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
# Path to the base directory of the project. On Windows the binary may
# live in project/PCBuild9. If we're dealing with an x64 Windows build,
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 8ad6e8b..795b67d 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -72,6 +72,10 @@ CFLAGSFORSHARED=@CFLAGSFORSHARED@
# C flags used for building the interpreter object files
PY_CFLAGS= $(CFLAGS) $(CPPFLAGS) $(CFLAGSFORSHARED) -DPy_BUILD_CORE
+# cross compiler options
+ifndef DESTDIR
+sysroot= @SYSROOT@
+endif
# Machine-dependent subdirectories
MACHDEP= @MACHDEP@
@@ -87,11 +91,11 @@ datarootdir= @datarootdir@
# Expanded directories
BINDIR= $(exec_prefix)/bin
-LIBDIR= $(exec_prefix)/lib
+LIBDIR= $(sysroot)$(exec_prefix)/lib
MANDIR= @mandir@
-INCLUDEDIR= @includedir@
-CONFINCLUDEDIR= $(exec_prefix)/include
-SCRIPTDIR= $(prefix)/lib
+INCLUDEDIR= $(sysroot)@includedir@
+CONFINCLUDEDIR= $(sysroot)$(exec_prefix)/include
+SCRIPTDIR= $(sysroot)$(prefix)/lib
# Detailed destination directories
BINLIBDEST= $(LIBDIR)/python$(VERSION)
diff --git a/configure.in b/configure.in
index e65e530..1354b7f 100644
--- a/configure.in
+++ b/configure.in
@@ -12,6 +12,9 @@ AC_INIT(python, PYTHON_VERSION, http://www.python.org/python-bugs)
AC_CONFIG_SRCDIR([Include/object.h])
AC_CONFIG_HEADER(pyconfig.h)
+AC_CANONICAL_BUILD
+AC_CANONICAL_HOST
+
dnl This is for stuff that absolutely must end up in pyconfig.h.
dnl Please use pyport.h instead, if possible.
AH_TOP([
@@ -756,9 +759,9 @@ fi
AC_MSG_RESULT($LDLIBRARY)
-AC_PROG_RANLIB
-AC_SUBST(AR)
-AC_CHECK_PROGS(AR, ar aal, ar)
+# find tools while respecting --host setting
+AC_CHECK_TOOL(RANLIB,ranlib)
+AC_CHECK_TOOLS(AR,ar aal,ar)
AC_SUBST(SVNVERSION)
AC_CHECK_PROG(SVNVERSION, svnversion, found, not-found)
@@ -3729,6 +3732,28 @@ AC_SUBST(PYTHON_FOR_BUILD)
AC_ARG_VAR(PYTHON_FOR_BUILD,[build system python (default: python)])
+#
+# Cross compiling
+#
+# special RUNSHARED
+if test "$cross_compiling" = "yes"; then
+ RUNSHARED="\
+ CROSS_COMPILING=yes \
+ _python_cross_host=${ac_cv_host} \
+ _python_sysroot=\"\$(sysroot)\" \
+ _python_srcdir=\"\$(srcdir)\" \
+ _python_prefix=\"\$(prefix)\" \
+ _python_exec_prefix=\"\$(exec_prefix)\""
+fi
+
+# sysroot
+AC_SUBST(SYSROOT)
+if test "$cross_compiling" = "yes"; then
+ AC_MSG_CHECKING([for SYSROOT])
+ AC_MSG_RESULT([$SYSROOT])
+fi
+
+
# generate output files
AC_CONFIG_FILES(Makefile.pre Modules/Setup.config)
AC_OUTPUT
diff --git a/setup.py b/setup.py
index 7beb08b..2c183c4 100644
--- a/setup.py
+++ b/setup.py
@@ -1715,7 +1715,11 @@ class PyBuildExt(build_ext):
ffi_configfile):
from distutils.dir_util import mkpath
mkpath(ffi_builddir)
- config_args = []
+
+ if os.environ.get('CROSS_COMPILING') != 'yes':
+ config_args = []
+ else:
+ config_args = ['--host=%s' % os.environ["_python_cross_host"],]
# Pass empty CFLAGS because we'll just append the resulting
# CFLAGS to Python's; -g or -O2 is to be avoided.
--
1.5.6.3
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