python · savannahostrowski · Jul 31, 2025 · Jul 31, 2025 · Aug 1, 2025 · Aug 1, 2025
@@ -3106,17 +3106,32 @@ config.status:	$(srcdir)/configure
 Python/asm_trampoline.o: $(srcdir)/Python/asm_trampoline.S
 	$(CC) -c $(PY_CORE_CFLAGS) -o $@ $<
 
-
 JIT_DEPS = \
 		$(srcdir)/Tools/jit/*.c \
 		$(srcdir)/Tools/jit/*.py \
 		$(srcdir)/Python/executor_cases.c.h \
 		pyconfig.h
-
-jit_stencils.h: $(JIT_DEPS)
+
+ifneq ($(filter aarch64-apple-darwin%,$(HOST_GNU_TYPE)),)
+JIT_STENCIL_HEADER := jit_stencils-aarch64-apple-darwin.h
+else ifneq ($(filter x86_64-apple-darwin%,$(HOST_GNU_TYPE)),)
+JIT_STENCIL_HEADER := jit_stencils-x86_64-apple-darwin.h
+else ifeq ($(HOST_GNU_TYPE), aarch64-pc-windows-msvc)
+JIT_STENCIL_HEADER := jit_stencils-aarch64-pc-windows-msvc.h
+else ifeq ($(HOST_GNU_TYPE), i686-pc-windows-msvc)
+JIT_STENCIL_HEADER := jit_stencils-i686-pc-windows-msvc.h
+else ifeq ($(HOST_GNU_TYPE), x86_64-pc-windows-msvc)
+JIT_STENCIL_HEADER := jit_stencils-x86_64-pc-windows-msvc.h
+else ifneq ($(filter aarch64-%-linux-gnu,$(HOST_GNU_TYPE)),)
+JIT_STENCIL_HEADER := jit_stencils-$(HOST_GNU_TYPE).h
+else ifneq ($(filter x86_64-%-linux-gnu,$(HOST_GNU_TYPE)),)
+JIT_STENCIL_HEADER := jit_stencils-$(HOST_GNU_TYPE).h
+endif
+
+jit_stencils.h $(JIT_STENCIL_HEADER): $(JIT_DEPS)
 	@REGEN_JIT_COMMAND@
 
-Python/jit.o: $(srcdir)/Python/jit.c @JIT_STENCILS_H@
+Python/jit.o: $(srcdir)/Python/jit.c jit_stencils.h $(JIT_STENCIL_HEADER)
 	$(CC) -c $(PY_CORE_CFLAGS) -o $@ $<
 
 .PHONY: regen-jit
@@ -3214,7 +3229,7 @@ clean-retain-profile: pycremoval
 	-rm -rf Python/deepfreeze
 	-rm -f Python/frozen_modules/*.h
 	-rm -f Python/frozen_modules/MANIFEST
-	-rm -f jit_stencils.h
+	-rm -f jit_stencils*.h
 	-find build -type f -a ! -name '*.gc??' -exec rm -f {} ';'
 	-rm -f Include/pydtrace_probes.h
 	-rm -f profile-gen-stamp

@@ -557,38 +557,45 @@ def get_target(host: str) -> _COFF32 | _COFF64 | _ELF | _MachO:
     optimizer: type[_optimizers.Optimizer]
     target: _COFF32 | _COFF64 | _ELF | _MachO
     if re.fullmatch(r"aarch64-apple-darwin.*", host):
+        host = "aarch64-apple-darwin"
         condition = "defined(__aarch64__) && defined(__APPLE__)"
         optimizer = _optimizers.OptimizerAArch64
         target = _MachO(host, condition, optimizer=optimizer)
     elif re.fullmatch(r"aarch64-pc-windows-msvc", host):
-        args = ["-fms-runtime-lib=dll", "-fplt"]
+        host = "aarch64-pc-windows-msvc"
         condition = "defined(_M_ARM64)"
+        args = ["-fms-runtime-lib=dll", "-fplt"]
         optimizer = _optimizers.OptimizerAArch64
         target = _COFF64(host, condition, args=args, optimizer=optimizer)
     elif re.fullmatch(r"aarch64-.*-linux-gnu", host):
+        host = "aarch64-unknown-linux-gnu"
+        condition = "defined(__aarch64__) && defined(__linux__)"
         # -mno-outline-atomics: Keep intrinsics from being emitted.
         args = ["-fpic", "-mno-outline-atomics"]
-        condition = "defined(__aarch64__) && defined(__linux__)"
         optimizer = _optimizers.OptimizerAArch64
         target = _ELF(host, condition, args=args, optimizer=optimizer)
     elif re.fullmatch(r"i686-pc-windows-msvc", host):
+        host = "i686-pc-windows-msvc"
+        condition = "defined(_M_IX86)"
         # -Wno-ignored-attributes: __attribute__((preserve_none)) is not supported here.
         args = ["-DPy_NO_ENABLE_SHARED", "-Wno-ignored-attributes"]
         optimizer = _optimizers.OptimizerX86
-        condition = "defined(_M_IX86)"
         target = _COFF32(host, condition, args=args, optimizer=optimizer)
     elif re.fullmatch(r"x86_64-apple-darwin.*", host):
+        host = "x86_64-apple-darwin"
         condition = "defined(__x86_64__) && defined(__APPLE__)"
         optimizer = _optimizers.OptimizerX86
         target = _MachO(host, condition, optimizer=optimizer)
     elif re.fullmatch(r"x86_64-pc-windows-msvc", host):
-        args = ["-fms-runtime-lib=dll"]
+        host = "x86_64-pc-windows-msvc"
         condition = "defined(_M_X64)"
+        args = ["-fms-runtime-lib=dll"]
         optimizer = _optimizers.OptimizerX86
         target = _COFF64(host, condition, args=args, optimizer=optimizer)
     elif re.fullmatch(r"x86_64-.*-linux-gnu", host):
-        args = ["-fno-pic", "-mcmodel=medium", "-mlarge-data-threshold=0"]
+        host = "x86_64-unknown-linux-gnu"
         condition = "defined(__x86_64__) && defined(__linux__)"
+        args = ["-fno-pic", "-mcmodel=medium", "-mlarge-data-threshold=0"]
         optimizer = _optimizers.OptimizerX86
         target = _ELF(host, condition, args=args, optimizer=optimizer)
     else:

@@ -2780,13 +2780,11 @@ AS_VAR_IF([jit_flags],
           [AS_VAR_APPEND([CFLAGS_NODIST], [" $jit_flags"])
            AS_VAR_SET([REGEN_JIT_COMMAND],
                       ["\$(PYTHON_FOR_REGEN) \$(srcdir)/Tools/jit/build.py ${ARCH_TRIPLES:-$host} --output-dir . --pyconfig-dir . --cflags=\"$CFLAGS_JIT\""])
-           AS_VAR_SET([JIT_STENCILS_H], ["jit_stencils.h"])
            AS_VAR_IF([Py_DEBUG],
                      [true],
                      [AS_VAR_APPEND([REGEN_JIT_COMMAND], [" --debug"])],
                      [])])
 AC_SUBST([REGEN_JIT_COMMAND])
-AC_SUBST([JIT_STENCILS_H])
 AC_MSG_RESULT([$tier2_flags $jit_flags])
 
 if test "$disable_gil" = "yes" -a "$enable_experimental_jit" != "no"; then