gh-120688: Build WASI with -O3 in debug mode (#120691)

vstinner · web-flow · commit 49f51deeef90 · 2024-06-18T19:35:44.000+02:00
On WASI in debug mode, Python is now built with compiler flag -O3
instead of -Og, to support more recursive calls.
diff --git a/Misc/NEWS.d/next/Build/2024-06-18-15-32-36.gh-issue-120688.tjIPLD.rst b/Misc/NEWS.d/next/Build/2024-06-18-15-32-36.gh-issue-120688.tjIPLD.rst
@@ -0,0 +1,3 @@
+On WASI in debug mode, Python is now built with compiler flag ``-O3``
+instead of ``-Og``, to support more recursive calls. Patch by Victor
+Stinner.
diff --git a/configure b/configure
diff --git a/configure.ac b/configure.ac
@@ -2289,6 +2289,11 @@ PYDEBUG_CFLAGS="-O0"
 AS_VAR_IF([ac_cv_cc_supports_og], [yes],
           [PYDEBUG_CFLAGS="-Og"])
 
+# gh-120688: WASI uses -O3 in debug mode to support more recursive calls
+if test "$ac_sys_system" = "WASI"; then
+    PYDEBUG_CFLAGS="-O3"
+fi
+
 # tweak OPT based on compiler and platform, only if the user didn't set
 # it on the command line
 AC_SUBST([OPT])

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	+On WASI in debug mode, Python is now built with compiler flag ``-O3``
	`2`	+instead of ``-Og``, to support more recursive calls. Patch by Victor
	`3`	`+Stinner.`