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Make sure setup.py reads the correct CONFIG_ARGS
The setup.py script that builds and installs all the Python modules
shipped with the interpreter looks at the CONFIG_ARGS variable stored
in the "sysconfig" module to look at the ./configure options and
adjust its behaviour accordingly.
Unfortunately, when cross-compiling, the value of CONFIG_ARGS returned
by the sysconfig are the one passed to the ./configure script of the
*host* Python and not the one we're currently building for the target.
In order to avoid that, we re-initialize the values in the sysconfig
module by re-reading the environment at the beginning of the setup.py
script, and we make sure that the CONFIG_ARGS variable is actually
part of the environment of setup.py.
See the beginning of
http://article.gmane.org/gmane.comp.python.devel/99772 for the
inspiration.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
Makefile.pre.in | 6 +++---
setup.py | 3 +++
2 files changed, 6 insertions(+), 3 deletions(-)
Index: Python-2.7.1/Makefile.pre.in
===================================================================
--- Python-2.7.1.orig/Makefile.pre.in
+++ Python-2.7.1/Makefile.pre.in
@@ -408,8 +408,8 @@
# Build the shared modules
sharedmods: $(BUILDPYTHON)
@case $$MAKEFLAGS in \
- *s*) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' CROSS_COMPILING=@CROSS_COMPILING@ DISABLED_EXTENSIONS="$(DISABLED_EXTENSIONS)" $(PYTHON_FOR_BUILD) -E $(srcdir)/setup.py -q build;; \
- *) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' CROSS_COMPILING=@CROSS_COMPILING@ DISABLED_EXTENSIONS="$(DISABLED_EXTENSIONS)" $(PYTHON_FOR_BUILD) -E $(srcdir)/setup.py build;; \
+ *s*) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' CROSS_COMPILING=@CROSS_COMPILING@ DISABLED_EXTENSIONS="$(DISABLED_EXTENSIONS)" CONFIG_ARGS="$(CONFIG_ARGS)" $(PYTHON_FOR_BUILD) -E $(srcdir)/setup.py -q build;; \
+ *) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' CROSS_COMPILING=@CROSS_COMPILING@ DISABLED_EXTENSIONS="$(DISABLED_EXTENSIONS)" CONFIG_ARGS="$(CONFIG_ARGS)" $(PYTHON_FOR_BUILD) -E $(srcdir)/setup.py build;; \
esac
# Build static library
@@ -1039,7 +1039,7 @@
# Install the dynamically loadable modules
# This goes into $(exec_prefix)
sharedinstall: sharedmods
- $(RUNSHARED) CROSS_COMPILING=@CROSS_COMPILING@ DISABLED_EXTENSIONS="$(DISABLED_EXTENSIONS)" $(PYTHON_FOR_BUILD) -E $(srcdir)/setup.py install \
+ $(RUNSHARED) CROSS_COMPILING=@CROSS_COMPILING@ DISABLED_EXTENSIONS="$(DISABLED_EXTENSIONS)" CONFIG_ARGS="$(CONFIG_ARGS)" $(PYTHON_FOR_BUILD) -E $(srcdir)/setup.py install \
--prefix=$(prefix) \
--install-scripts=$(BINDIR) \
--install-platlib=$(DESTSHARED) \
Index: Python-2.7.1/setup.py
===================================================================
--- Python-2.7.1.orig/setup.py
+++ Python-2.7.1/setup.py
@@ -20,6 +20,9 @@
# Were we compiled --with-pydebug or with #define Py_DEBUG?
COMPILED_WITH_PYDEBUG = hasattr(sys, 'gettotalrefcount')
+sysconfig.get_config_vars()
+sysconfig._CONFIG_VARS.update(os.environ)
+
# This global variable is used to hold the list of modules to be disabled.
try:
disabled_module_list = sysconfig.get_config_var("DISABLED_EXTENSIONS").split(" ")
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