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- Add infrastructure to disable the build of certain extensions
- Some of the extensions part of the Python core have dependencies on
- external libraries (sqlite, tk, etc.) or are relatively big and not
- necessarly always useful (CJK codecs for example). By extensions, we
- mean part of Python modules that are written in C and therefore
- compiled to binary code.
- Therefore, we introduce a small infrastructure that allows to disable
- some of those extensions. This can be done inside the configure.ac by
- adding values to the DISABLED_EXTENSIONS variable (which is a
- word-separated list of extensions).
- The implementation works as follow :
- * configure.ac defines a DISABLED_EXTENSIONS variable, which is
- substituted (so that when Makefile.pre is generated from
- Makefile.pre.in, the value of the variable is substituted). For
- now, this DISABLED_EXTENSIONS variable is empty, later patches will
- use it.
- * Makefile.pre.in passes the DISABLED_EXTENSIONS value down to the
- variables passed in the environment when calling the setup.py
- script that actually builds and installs those extensions.
- * setup.py is modified so that the existing "disabled_module_list" is
- filled with those pre-disabled extensions listed in
- DISABLED_EXTENSIONS.
- Patch ported to python2.7 by Maxime Ripard <ripard@archos.com>, and
- then extended by Thomas Petazzoni
- <thomas.petazzoni@free-electrons.com>.
- Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
- ---
- Makefile.pre.in | 4 ++++
- configure.ac | 2 ++
- setup.py | 5 ++++-
- 3 files changed, 10 insertions(+), 1 deletion(-)
- Index: b/Makefile.pre.in
- ===================================================================
- --- a/Makefile.pre.in
- +++ b/Makefile.pre.in
- @@ -180,6 +180,8 @@
- # configure script arguments
- CONFIG_ARGS= @CONFIG_ARGS@
-
- +# disabled extensions
- +DISABLED_EXTENSIONS= @DISABLED_EXTENSIONS@
-
- # Subdirectories with code
- SRCDIRS= @SRCDIRS@
- @@ -577,6 +579,7 @@
- esac; \
- $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' \
- _TCLTK_INCLUDES='$(TCLTK_INCLUDES)' _TCLTK_LIBS='$(TCLTK_LIBS)' \
- + DISABLED_EXTENSIONS="$(DISABLED_EXTENSIONS)" \
- $(PYTHON_FOR_BUILD) $(srcdir)/setup.py $$quiet build
-
- # Build static library
- @@ -1387,7 +1390,8 @@
- # Install the dynamically loadable modules
- # This goes into $(exec_prefix)
- sharedinstall: sharedmods
- - $(RUNSHARED) $(PYTHON_FOR_BUILD) $(srcdir)/setup.py install \
- + $(RUNSHARED) DISABLED_EXTENSIONS="$(DISABLED_EXTENSIONS)" \
- + $(PYTHON_FOR_BUILD) $(srcdir)/setup.py install \
- --prefix=$(prefix) \
- --install-scripts=$(BINDIR) \
- --install-platlib=$(DESTSHARED) \
- Index: b/configure.ac
- ===================================================================
- --- a/configure.ac
- +++ b/configure.ac
- @@ -2369,6 +2369,8 @@
-
- PKG_PROG_PKG_CONFIG
-
- +AC_SUBST(DISABLED_EXTENSIONS)
- +
- # Check for use of the system expat library
- AC_MSG_CHECKING(for --with-system-expat)
- AC_ARG_WITH(system_expat,
- Index: b/setup.py
- ===================================================================
- --- a/setup.py
- +++ b/setup.py
- @@ -39,7 +39,10 @@
- COMPILED_WITH_PYDEBUG = ('--with-pydebug' in sysconfig.get_config_var("CONFIG_ARGS"))
-
- # This global variable is used to hold the list of modules to be disabled.
- -disabled_module_list = []
- +try:
- + disabled_module_list = sysconfig.get_config_var("DISABLED_EXTENSIONS").split(" ")
- +except KeyError:
- + disabled_module_list = list()
-
- def add_dir_to_list(dirlist, dir):
- """Add the directory 'dir' to the list 'dirlist' (after any relative
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