r16-7089-gfbde291af66e02 had a stray change to the Makefile.in but
actually we probably should change that directory to use C++20, now that
it's the default. So this updates the Makefile.am, and the Makefile.in
doesn't need to be regenerated now.
libstdc++-v3/ChangeLog:
* src/experimental/Makefile.am: Change AM_CXXFLAGS to use C++20
by default.
---
Pushed to trunk.
This doesn't make any practical difference to the library build, because
there's only one file in src/experimental and Makefile.am has explicit
rules for that, using -std=gnu++26 -fcontracts
But we might as well use gnu++20 as the default for any other files we
add in here in future.
libstdc++-v3/src/experimental/Makefile.am | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libstdc++-v3/src/experimental/Makefile.am
b/libstdc++-v3/src/experimental/Makefile.am
index e428aef23c04..bad10b40e21d 100644
--- a/libstdc++-v3/src/experimental/Makefile.am
+++ b/libstdc++-v3/src/experimental/Makefile.am
@@ -67,7 +67,7 @@ libstdc__exp_la_DEPENDENCIES = \
# OPTIMIZE_CXXFLAGS on the compile line so that -O2 can be overridden
# as the occasion calls for it.
AM_CXXFLAGS = \
- -std=gnu++17 -nostdinc++ \
+ -std=gnu++20 -nostdinc++ \
$(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \
$(XTEMPLATE_FLAGS) $(VTV_CXXFLAGS) \
$(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS) \
--
2.52.0
