Use string type annotations.

Author: nascheme

Tools/configure/conf_buildopts.py

@@ -6,6 +6,8 @@
 the PROFILE_TASK used for PGO training runs and DEF_MAKE_ALL_RULE.
 """
 
+from __future__ import annotations
+
 import pyconf
 
 DISABLE_GIL = pyconf.arg_enable(

Tools/configure/conf_compiler.py

@@ -8,6 +8,8 @@
 memmove, ipa-pure-const).
 """
 
+from __future__ import annotations
+
 import os
 
 import pyconf

Tools/configure/conf_extlibs.py

@@ -6,6 +6,8 @@
 Tcl/Tk libraries and headers via pkg-config or manual search.
 """
 
+from __future__ import annotations
+
 import pyconf
 
 

Tools/configure/conf_filesystem.py

@@ -1,5 +1,7 @@
 """Filesystem related checks."""
 
+from __future__ import annotations
+
 import pyconf
 
 

Tools/configure/conf_init.py

@@ -7,6 +7,8 @@
 pkg-config probing, and the missing-stdlib-config option.
 """
 
+from __future__ import annotations
+
 import conf_modules
 import pyconf
 

Tools/configure/conf_macos.py

@@ -9,6 +9,8 @@
 universal architecture flags; and MACOSX_DEPLOYMENT_TARGET.
 """
 
+from __future__ import annotations
+
 import os
 
 import pyconf

Tools/configure/conf_math.py

@@ -8,6 +8,8 @@
 (including Solaris workarounds).
 """
 
+from __future__ import annotations
+
 import pyconf
 
 WITH_LIBM = pyconf.arg_with(

Tools/configure/conf_modules.py

@@ -7,6 +7,8 @@
 variables (LIBHACL_*, MODULE_*_LDFLAGS).
 """
 
+from __future__ import annotations
+
 import pyconf
 
 

Tools/configure/conf_net.py

@@ -10,6 +10,8 @@
 conf_syslibs, conf_probes, conf_math, and conf_checks.
 """
 
+from __future__ import annotations
+
 import pyconf
 
 WITH_LIBS = pyconf.arg_with(

Tools/configure/conf_optimization.py

@@ -7,6 +7,8 @@
 --enable-bolt (llvm-bolt, merge-fdata, BOLT_*_FLAGS).
 """
 
+from __future__ import annotations
+
 import os
 
 import pyconf