From 2124b2de4bba05063218501dcccfc4cffe648cda Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Mon, 9 Jan 2023 07:43:29 -0700 Subject: Set _WIN32_WINNT in common.m4 configure check GCC recently added support for the Windows thread model, enabling libstdc++ to support Windows natively. However, this supporrt requires a version of Windows later than the minimum version that is supported by GDB. PR build/29966 points out that the GDB configure test for std::thread does not work in this situation, because _WIN32_WINNT is not defined in test program, and so seems to be fine. This patch is an attempt to fix the problem, by using the same setting for _WIN32_WINNT at configure time as is used at build time. I don't have access to one of the older systems so I don't think I can truly test this. I did do a mingw cross build, though. I'm going to ask the bug reporter to test it. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29966 --- gdbsupport/common-defs.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'gdbsupport/common-defs.h') diff --git a/gdbsupport/common-defs.h b/gdbsupport/common-defs.h index bcebd71..5e529f6 100644 --- a/gdbsupport/common-defs.h +++ b/gdbsupport/common-defs.h @@ -70,7 +70,9 @@ /* We don't support Windows versions before XP, so we define _WIN32_WINNT correspondingly to ensure the Windows API headers - expose the required symbols. */ + expose the required symbols. + + NOTE: this must be kept in sync with common.m4. */ #if defined (__MINGW32__) || defined (__CYGWIN__) # ifdef _WIN32_WINNT # if _WIN32_WINNT < 0x0501 -- cgit v1.1