Build: Use C11 for wheel and CI builds.

Author: scoder

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ env:
   LIBICONV_VERSION: "1.18"
   LIBXML2_VERSION: "2.14.6"
   LIBXSLT_VERSION: "1.1.43"
-
+  LXML_CSTD: c11
 
 jobs:
   cache_libs:
@@ -313,7 +313,8 @@ jobs:
     if: false
 
     env:
-      CFLAGS: -march=core2 -O3 -flto -std=c11 -fPIC -g -Wall -Wextra
+      CFLAGS: -march=core2 -O3 -flto -fPIC -g -Wall -Wextra
+      LXML_CSTD: c11
       CCACHE_SLOPPINESS: "pch_defines,time_macros"
       CCACHE_COMPRESS: 1
       CCACHE_COMPRESSLEVEL: 5

.github/workflows/wheels.yml

@@ -43,6 +43,7 @@ env:
   LIBICONV_VERSION: "1.18"
   LIBXML2_VERSION: "2.14.6"
   LIBXSLT_VERSION: "1.1.43"
+  LXML_CSTD: "c11"
 
 
 jobs:

pyproject.toml

@@ -3,7 +3,7 @@ requires = ["Cython>=3.1.4", "setuptools"]
 
 [tool.cibuildwheel]
 build-verbosity = 1
-environment = {STATIC_DEPS="true", ZLIB_VERSION = "1.3.1", LIBICONV_VERSION = "1.18", LIBXML2_VERSION = "2.14.6", LIBXSLT_VERSION = "1.1.43"}
+environment = {STATIC_DEPS="true", ZLIB_VERSION = "1.3.1", LIBICONV_VERSION = "1.18", LIBXML2_VERSION = "2.14.6", LIBXSLT_VERSION = "1.1.43", LXML_CSTD = "c11"}
 enable = ["pypy", "cpython-prerelease", "cpython-freethreading"]
        # "pypy"
        # "cpython-prerelease"
@@ -50,7 +50,6 @@ environment.AR = "gcc-ar"
 environment.NM = "gcc-nm"
 environment.RANLIB = "gcc-ranlib"
 environment.LDFLAGS = "-fPIC -flto"
-environment.STATIC_DEPS = "true"
 
 [[tool.cibuildwheel.overrides]]
 select = "*linux_i686"

setupinfo.py

@@ -317,6 +317,8 @@ def cflags(static_cflags):
         result.append('-w')
     if OPTION_DEBUG_GCC:
         result.append('-g2')
+    if OPTION_CSTD:
+        result.append(f'/std:{OPTION_CSTD}' if sys.platform == 'win32' else f'-std={OPTION_CSTD}')
 
     if OPTION_STATIC:
         if not static_cflags:
@@ -558,6 +560,7 @@ def print_deprecated_option(name, new_name):
 OPTION_LIBICONV_VERSION = option_value('libiconv-version')
 OPTION_ZLIB_VERSION = option_value('zlib-version')
 OPTION_MULTICORE = option_value('multicore')
+OPTION_CSTD = option_value('lxml-cstd')
 OPTION_DOWNLOAD_DIR = option_value('download-dir')
 if OPTION_DOWNLOAD_DIR is None:
     OPTION_DOWNLOAD_DIR = 'libs'