PublicArchive/cpython
2
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2026-05-06 04:37:33 -04:00
Code Issues Packages Projects Releases Wiki Activity

gh-136677: Introduce executable specific linker flags to configure (#137296)

Browse Source 
* introduce executable specific linker flags

Add PY_CORE_EXE_LDFLAGS and EXE_LDFLAGS which stores executable specific
LDFLAGS, replacing PY_CORE_LDFLAGS for building
executable targets.

If PY_CORE_EXE_LDFLAGS / EXE_LDFLAGS is not provided, then it defaults
to the value of PY_CORE_LDFLAGS which is the existing behaviour.

If both flags are supplied, and there is a need
to distinguish between executable and shared specific LDFLAGS,
in particular, PY_CORE_LDFLAGS should contain the shared specific LDFLAGS.

* documentation for new linker flags

* update Misc folder documentation

* Update Makefile.pre.in

Co-authored-by: Victor Stinner <vstinner@python.org>

---------

Co-authored-by: Filipe Laíns <filipe.lains@gmail.com>
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Filipe Laíns <lains@riseup.net>
This commit is contained in:
rueteh
2026-02-25 09:52:02 +11:00
committed by GitHub
parent 5e61a16c10
commit 4e45c9c309
9 changed files with 42 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Doc/using/configure.rst
+27
View File
@@ -1650,6 +1650,9 @@ Linker flags
value to be able to build extension modules using the
directories specified in the environment variables.
Please consider using ``EXE_LDFLAGS`` if the supplied linker flags are
executable specific, e.g. GCC's ``-pie`` flag.
.. envvar:: LIBS
Linker flags to pass libraries to the linker when linking the Python
@@ -1685,6 +1688,30 @@ Linker flags
.. versionadded:: 3.8
.. envvar:: EXE_LDFLAGS
Linker flags used for building executable targets such as the
interpreter. If supplied, :envvar:`PY_CORE_EXE_LDFLAGS`
will be used in replacement of :envvar:`PY_CORE_LDFLAGS`.
.. versionadded:: 3.15
.. envvar:: CONFIGURE_EXE_LDFLAGS
Value of :envvar:`EXE_LDFLAGS` variable passed to the ``./configure``
script.
.. versionadded:: 3.15
.. envvar:: PY_CORE_EXE_LDFLAGS
Linker flags used for building the interpreter and
executable targets.
Default: ``$(PY_CORE_LDFLAGS)``
.. versionadded:: 3.15
.. rubric:: Footnotes
Lib/_osx_support.py
+2 -1
View File
@@ -17,7 +17,8 @@ __all__ = [
_UNIVERSAL_CONFIG_VARS = ('CFLAGS', 'LDFLAGS', 'CPPFLAGS', 'BASECFLAGS',
'BLDSHARED', 'LDSHARED', 'CC', 'CXX',
'PY_CFLAGS', 'PY_LDFLAGS', 'PY_CPPFLAGS',
'PY_CORE_CFLAGS', 'PY_CORE_LDFLAGS')
'PY_CORE_CFLAGS', 'PY_CORE_LDFLAGS',
'PY_CORE_EXE_LDFLAGS')
# configuration variables that may contain compiler calls
_COMPILER_CONFIG_VARS = ('BLDSHARED', 'LDSHARED', 'CC', 'CXX')
Lib/test/pythoninfo.py
+1
View File
@@ -528,6 +528,7 @@ def collect_sysconfig(info_add):
'PY_CFLAGS',
'PY_CFLAGS_NODIST',
'PY_CORE_LDFLAGS',
'PY_CORE_EXE_LDFLAGS',
'PY_LDFLAGS',
'PY_LDFLAGS_NODIST',
'PY_STDMODULE_CFLAGS',
Lib/test/test__osx_support.py
+1 -1
View File
@@ -25,7 +25,7 @@ class Test_OSXSupport(unittest.TestCase):
'CFLAGS', 'LDFLAGS', 'CPPFLAGS',
'BASECFLAGS', 'BLDSHARED', 'LDSHARED', 'CC',
'CXX', 'PY_CFLAGS', 'PY_LDFLAGS', 'PY_CPPFLAGS',
'PY_CORE_CFLAGS', 'PY_CORE_LDFLAGS'
'PY_CORE_CFLAGS', 'PY_CORE_LDFLAGS', 'PY_CORE_EXE_LDFLAGS'
)
def add_expected_saved_initial_values(self, config_vars, expected_vars):
Makefile.pre.in
+6 -2
View File
@@ -123,7 +123,11 @@ PY_STDMODULE_CFLAGS= $(PY_CFLAGS) $(PY_CFLAGS_NODIST) $(PY_CPPFLAGS) $(CFLAGSFOR
PY_BUILTIN_MODULE_CFLAGS= $(PY_STDMODULE_CFLAGS) -DPy_BUILD_CORE_BUILTIN
PY_CORE_CFLAGS= $(PY_STDMODULE_CFLAGS) -DPy_BUILD_CORE
# Linker flags used for building the interpreter object files
# In particular, EXE_LDFLAGS is an extra flag to provide fine grain distinction between
# LDFLAGS used to build executables and shared targets.
PY_CORE_LDFLAGS=$(PY_LDFLAGS) $(PY_LDFLAGS_NODIST)
CONFIGURE_EXE_LDFLAGS=@EXE_LDFLAGS@
PY_CORE_EXE_LDFLAGS:= $(if $(CONFIGURE_EXE_LDFLAGS), $(CONFIGURE_EXE_LDFLAGS) $(PY_LDFLAGS_NODIST), $(PY_CORE_LDFLAGS))
# Strict or non-strict aliasing flags used to compile dtoa.c, see above
CFLAGS_ALIASING=@CFLAGS_ALIASING@
@@ -986,7 +990,7 @@ clinic-tests: check-clean-src $(srcdir)/Lib/test/clinic.test.c
# Build the interpreter
$(BUILDPYTHON): Programs/python.o $(LINK_PYTHON_DEPS)
$(LINKCC) $(PY_CORE_LDFLAGS) $(LINKFORSHARED) -o $@ Programs/python.o $(LINK_PYTHON_OBJS) $(LIBS) $(MODLIBS) $(SYSLIBS)
$(LINKCC) $(PY_CORE_EXE_LDFLAGS) $(LINKFORSHARED) -o $@ Programs/python.o $(LINK_PYTHON_OBJS) $(LIBS) $(MODLIBS) $(SYSLIBS)
platform: $(PYTHON_FOR_BUILD_DEPS) pybuilddir.txt
$(RUNSHARED) $(PYTHON_FOR_BUILD) -c 'import sys ; from sysconfig import get_platform ; print("%s-%d.%d" % (get_platform(), *sys.version_info[:2]))' >platform
@@ -1676,7 +1680,7 @@ regen-re: $(BUILDPYTHON)
$(RUNSHARED) ./$(BUILDPYTHON) $(srcdir)/Tools/build/generate_re_casefix.py $(srcdir)/Lib/re/_casefix.py
Programs/_testembed: Programs/_testembed.o $(LINK_PYTHON_DEPS)
$(LINKCC) $(PY_CORE_LDFLAGS) $(LINKFORSHARED) -o $@ Programs/_testembed.o $(LINK_PYTHON_OBJS) $(LIBS) $(MODLIBS) $(SYSLIBS)
$(LINKCC) $(PY_CORE_EXE_LDFLAGS) $(LINKFORSHARED) -o $@ Programs/_testembed.o $(LINK_PYTHON_OBJS) $(LIBS) $(MODLIBS) $(SYSLIBS)
############################################################################
# "Bootstrap Python" used to run Programs/_freeze_module.py
Misc/ACKS
+1
View File
@@ -1916,6 +1916,7 @@ Guo Ci Teo
Mikhail Terekhov
Victor Terrón
Pablo Galindo
Rue Ching Teh
Richard M. Tew
Srinivas Reddy Thatiparthy
Tobias Thelen
Misc/NEWS.d/next/Build/2025-07-21-00-33-38.gh-issue-136677.Y1_3ec.rst
+1
View File
@@ -0,0 +1 @@
Introduce executable specific linker flags to ``./configure``.
configure
Generated Vendored
+2
View File
@@ -915,6 +915,7 @@ UNIVERSAL_ARCH_FLAGS
WASM_STDLIB
WASM_ASSETS_DIR
LDFLAGS_NOLTO
EXE_LDFLAGS
LDFLAGS_NODIST
CFLAGS_NODIST
BASECFLAGS
@@ -9745,6 +9746,7 @@ esac
# The -arch flags for universal builds on macOS
UNIVERSAL_ARCH_FLAGS=
configure.ac
+1
View File
@@ -2422,6 +2422,7 @@ AS_CASE([$enable_wasm_dynamic_linking],
AC_SUBST([BASECFLAGS])
AC_SUBST([CFLAGS_NODIST])
AC_SUBST([LDFLAGS_NODIST])
AC_SUBST([EXE_LDFLAGS])
AC_SUBST([LDFLAGS_NOLTO])
AC_SUBST([WASM_ASSETS_DIR])
AC_SUBST([WASM_STDLIB])