Oh well

.github/workflows/MSYS2.yml

@@ -52,6 +52,7 @@ jobs:
             qt6-webchannel:p
             qt6-websockets:p
             x264:p
+            cc:p
 
       - name: Configure and build RetroArch
         shell: msys2 {0}

Makefile.common

@@ -2648,16 +2648,16 @@ ifeq ($(HAVE_ODROIDGO2), 1)
          gfx/drivers/oga_gfx.o
 endif
 
-
 ifneq ($(findstring Win32,$(OS)),)
-# This block executes only if $(OS) contains "Win32"
-NT_VERSION := $(shell echo "#include <windows.h>" > temp.c; \
-               echo "#ifdef _WIN32_WINNT" >> temp.c; \
-               echo "#define GET_MACRO_VALUE(x) #x" >> temp.c; \
-               echo "#define EXPAND_MACRO_VALUE(x) GET_MACRO_VALUE(x)" >> temp.c; \
-               echo "#pragma message (\"_WIN32_WINNT=\" EXPAND_MACRO_VALUE(_WIN32_WINNT))" >> temp.c; \
-               echo "#endif" >> temp.c; \
-               $(CC) -c temp.c 2>&1 | sed -n 's/^.*_WIN32_WINNT=\(0x[0-9A-Fa-f]\+\).*/\1/p'; \
+ifneq ($(shell sh -c 'command -v sh'),)  # Check if we have a Unix shell
+# This block executes only if $(OS) contains "Win32" and we're in a Unix shell
+NT_VERSION := $(shell echo "#include <windows.h>" > temp.c && \
+               echo "#ifdef _WIN32_WINNT" >> temp.c && \
+               echo "#define GET_MACRO_VALUE(x) #x" >> temp.c && \
+               echo "#define EXPAND_MACRO_VALUE(x) GET_MACRO_VALUE(x)" >> temp.c && \
+               echo "#pragma message (\"_WIN32_WINNT=\" EXPAND_MACRO_VALUE(_WIN32_WINNT))" >> temp.c && \
+               echo "#endif" >> temp.c && \
+               $(CC) -c temp.c 2>&1 | sed -n 's/^.*_WIN32_WINNT=\(0x[0-9A-Fa-f]\+\).*/\1/p' && \
                rm -f temp.c temp.o)
 
 # Check if NT_VERSION is greater than 0x602
@@ -2669,5 +2669,5 @@ else
 $(warning Windows NT version macro (_WIN32_WINNT) is not defined.)
 endif
 endif
-
+endif
 ##################################