@@ -112,7 +112,7 @@ def call(command, *, quiet, **kwargs):
112112
113113def build_platform ():
114114"""The name of the build/host platform."""
115- # Can also be found via `config.guess`.`
115+ # Can also be found via `config.guess`.
116116return sysconfig .get_config_var ("BUILD_GNU_TYPE" )
117117
118118
@@ -128,6 +128,15 @@ def build_python_path():
128128return binary
129129
130130
131+ def build_python_is_pydebug ():
132+ """Find out if the build Python is a pydebug build."""
133+ test = "import sys, test.support; sys.exit(test.support.Py_DEBUG)"
134+ result = subprocess .run ([build_python_path (),"-c" ,test ],
135+ stdout = subprocess .PIPE ,
136+ stderr = subprocess .PIPE )
137+ return bool (result .returncode )
138+
139+
131140@subdir (BUILD_DIR ,clean_ok = True )
132141def configure_build_python (context ,working_dir ):
133142"""Configure the build/host Python."""
@@ -214,18 +223,15 @@ def configure_wasi_python(context, working_dir):
214223lib_dirs = list (python_build_dir .glob ("lib.*" ))
215224assert len (lib_dirs )== 1 ,f"Expected a single lib.* directory in{ python_build_dir }
216225lib_dir = os .fsdecode (lib_dirs [0 ])
217- pydebug = lib_dir .endswith ("-pydebug" )
218- python_version = lib_dir .removesuffix ("-pydebug" ).rpartition ("-" )[- 1 ]
219- sysconfig_data = f"{ wasi_build_dir } { python_version }
220- if pydebug :
221- sysconfig_data += "-pydebug"
226+ python_version = lib_dir .rpartition ("-" )[- 1 ]
227+ sysconfig_data_dir = f"{ wasi_build_dir } { python_version }
222228
223229# Use PYTHONPATH to include sysconfig data which must be anchored to the
224230# WASI guest's `/` directory.
225231args = {"GUEST_DIR" :"/" ,
226232"HOST_DIR" :CHECKOUT ,
227233"ENV_VAR_NAME" :"PYTHONPATH" ,
228- "ENV_VAR_VALUE" :f"/{ sysconfig_data } ,
234+ "ENV_VAR_VALUE" :f"/{ sysconfig_data_dir } ,
229235"PYTHON_WASM" :working_dir / "python.wasm" }
230236# Check dynamically for wasmtime in case it was specified manually via
231237# `--host-runner`.
@@ -245,7 +251,7 @@ def configure_wasi_python(context, working_dir):
245251f"--host={ context .host_triple } ,
246252f"--build={ build_platform ()} ,
247253f"--with-build-python={ build_python } ]
248- if pydebug :
254+ if build_python_is_pydebug () :
249255configure .append ("--with-pydebug" )
250256if context .args :
251257configure .extend (context .args )