Python: add crosscompiling patch from buildroot, dont globally change _sysconfigdata.py, enable autoreconf

Signed-off-by: Stephan Raue <stephan@openelec.tv>
This commit is contained in:
Stephan Raue 2016-03-07 15:44:09 +01:00
parent a6179a798a
commit 2c7678c41e
3 changed files with 62 additions and 9 deletions

View File

@ -22,6 +22,11 @@ setup_toolchain() {
export PKG_CONFIG_LIBDIR="$TARGET_PKG_CONFIG_LIBDIR"
export PKG_CONFIG_SYSROOT_DIR="$TARGET_PKG_CONFIG_SYSROOT_DIR"
# set python defaults
export _python_sysroot="$SYSROOT_PREFIX"
export _python_prefix=/usr
export _python_exec_prefix=/usr
# set CMAKE configfile for target
export CMAKE_CONF=$ROOT/$TOOLCHAIN/etc/cmake-$TARGET_NAME.conf

View File

@ -31,7 +31,7 @@ PKG_SHORTDESC="python: The Python programming language"
PKG_LONGDESC="Python is an interpreted object-oriented programming language, and is often compared with Tcl, Perl, Java or Scheme."
PKG_IS_ADDON="no"
PKG_AUTORECONF="no"
PKG_AUTORECONF="yes"
PY_DISABLED_MODULES="readline _curses _curses_panel _tkinter nis gdbm bsddb ossaudiodev"
@ -77,10 +77,8 @@ make_host() {
PYTHON_MODULES_LIB="$HOST_LIBDIR" \
PYTHON_DISABLE_MODULES="$PY_DISABLED_MODULES"
sed -e "s|$ROOT/$TOOLCHAIN/include|$SYSROOT_PREFIX/usr/include|g" \
-e "s|$ROOT/$TOOLCHAIN/lib|$SYSROOT_PREFIX/usr/lib|g" \
-e "s|$ROOT/$TOOLCHAIN/bin/host-gcc|${TARGET_PREFIX}gcc|g" \
-i build/lib.linux-$(uname -m)-2.7/_sysconfigdata.py
# python distutils per default adds -L$LIBDIR when linking binary extensions
sed -e "s|^ 'LIBDIR':.*| 'LIBDIR': '/usr/lib',|g" -i $(cat pybuilddir.txt)/_sysconfigdata.py
}
makeinstall_host() {
@ -120,10 +118,6 @@ makeinstall_target() {
PYTHON_MODULES_LIB="$TARGET_LIBDIR" \
install
# python distutils per default adds -L$LIBDIR when linking binary extensions
sed -e "s|^LIBDIR=.*|LIBDIR= $SYSROOT_PREFIX/usr/lib|" \
-i $SYSROOT_PREFIX/usr/lib/python*/config/Makefile
make -j1 CC="$TARGET_CC" \
DESTDIR=$INSTALL \
PYTHON_DISABLE_MODULES="$PY_DISABLED_MODULES" \

View File

@ -0,0 +1,54 @@
Adjust library/header paths for cross-compilation
When cross-compiling third-party extensions, the get_python_inc() or
get_python_lib() can be called, to return the path to headers or
libraries. However, they use the sys.prefix of the host Python, which
returns incorrect paths when cross-compiling (paths pointing to host
headers and libraries).
In order to fix this, we introduce the _python_sysroot, _python_prefix
and _python_exec_prefix variables, that allow to override these
values, and get correct header/library paths when cross-compiling
third-party Python modules.
The _python_sysroot variable is also used to prefix the LIBDIR value
taken from the sysconfigdata module.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Index: b/Lib/distutils/sysconfig.py
===================================================================
--- a/Lib/distutils/sysconfig.py
+++ b/Lib/distutils/sysconfig.py
@@ -19,8 +19,13 @@
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)
+if "_python_sysroot" in os.environ:
+ _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'))
+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,
Index: b/Lib/distutils/command/build_ext.py
===================================================================
--- a/Lib/distutils/command/build_ext.py
+++ b/Lib/distutils/command/build_ext.py
@@ -237,7 +237,10 @@
if (sysconfig.get_config_var('Py_ENABLE_SHARED')):
if not sysconfig.python_build:
# building third party extensions
- self.library_dirs.append(sysconfig.get_config_var('LIBDIR'))
+ libdir = sysconfig.get_config_var('LIBDIR')
+ if "_python_sysroot" in os.environ:
+ libdir = os.environ.get("_python_sysroot") + libdir
+ self.library_dirs.append(libdir)
else:
# building python standard extensions
self.library_dirs.append('.')