Fix native builds on Windows ARM64 machines

I made the mistake of always selecting the debug CRT for compiler
checks on Windows 4 years ago:
https://github.com/mesonbuild/meson/pull/543
https://github.com/mesonbuild/meson/pull/614

The idea was to always build the tests with debugging enabled so that
the compiler doesn't optimize the tests away. But we stopped doing
that a while ago, and also the debug CRT has no relation to that.

We should select the CRT in the same way that we do for building
targets: based on the options.

On Windows ARM64, the debug CRT for ARM64 isn't always available, and
the release CRT is available only after installing the runtime
package. Without this, we will always try to pick the debug CRT even
when --buildtype=debugoptimized or release.

1 files changed, 10 insertions, 2 deletions

diff --git a/mesonbuild/compilers/mixins/clike.py b/mesonbuild/compilers/mixins/clike.py
index 47e97d261..95b959285 100644
--- a/mesonbuild/compilers/mixins/clike.py
+++ b/mesonbuild/compilers/mixins/clike.py
@@ -366,9 +366,17 @@ class CLikeCompiler:
 
     def _get_basic_compiler_args(self, env, mode: str):
         cargs, largs = [], []
-        # Select a CRT if needed since we're linking
         if mode == 'link':
-            cargs += self.get_linker_debug_crt_args()
+            # Sometimes we need to manually select the CRT to use with MSVC.
+            # One example is when trying to do a compiler check that involves
+            # linking with static libraries since MSVC won't select a CRT for
+            # us in that case and will error out asking us to pick one.
+            try:
+                crt_val = env.coredata.base_options['b_vscrt'].value
+                buildtype = env.coredata.base_options['buildtype'].value
+                cargs += self.get_crt_compile_args(crt_val, buildtype)
+            except (KeyError, AttributeError):
+                pass
 
         # Add CFLAGS/CXXFLAGS/OBJCFLAGS/OBJCXXFLAGS and CPPFLAGS from the env
         sys_args = env.coredata.get_external_args(self.for_machine, self.language)