Modules/DetermineCompiler: avoid the cache for ABI compilations

Modules/CMakeDetermineCompilerABI.cmake

@@ -86,6 +86,7 @@ function(CMAKE_DETERMINE_COMPILER_ABI lang src)
                   # Ignore unused flags when we are just determining the ABI.
                   "--no-warn-unused-cli"
       COMPILE_DEFINITIONS ${COMPILE_DEFINITIONS}
+      NO_CACHE
       OUTPUT_VARIABLE OUTPUT
       COPY_FILE "${BIN}"
       COPY_FILE_ERROR _copy_error
@@ -97,9 +98,6 @@ function(CMAKE_DETERMINE_COMPILER_ABI lang src)
     set(ENV{LC_MESSAGES} ${_orig_lc_messages})
     set(ENV{LANG}        ${_orig_lang})
 
-    # Move result from cache to normal variable.
-    set(CMAKE_${lang}_ABI_COMPILED ${CMAKE_${lang}_ABI_COMPILED})
-    unset(CMAKE_${lang}_ABI_COMPILED CACHE)
     if(CMAKE_${lang}_ABI_COMPILED AND _copy_error)
       set(CMAKE_${lang}_ABI_COMPILED 0)
     endif()

Tests/RunCMake/try_compile/ConfigureLog-config.txt

@@ -29,7 +29,7 @@ events:(
 ]*)+
     buildResult:
       variable: "CMAKE_C_ABI_COMPILED"
-      cached: true
+      cached: false
       stdout: \|.*
       exitCode: 0(
 +  -

Tests/RunCMake/try_compile/Inspect-config.txt

@@ -29,7 +29,7 @@ events:(
 ]*)+
     buildResult:
       variable: "CMAKE_C_ABI_COMPILED"
-      cached: true
+      cached: false
       stdout: \|.*
       exitCode: 0(
 +  -
@@ -60,7 +60,7 @@ events:(
 ]*)+
     buildResult:
       variable: "CMAKE_CXX_ABI_COMPILED"
-      cached: true
+      cached: false
       stdout: \|.*
       exitCode: 0(
 +  -

Tests/RunCMake/try_compile/TopIncludes-config.txt

@@ -29,7 +29,7 @@ events:(
 ]*)+
     buildResult:
       variable: "CMAKE_C_ABI_COMPILED"
-      cached: true
+      cached: false
       stdout: \|.*
       exitCode: 0(
 +  -

Tests/RunCMake/try_run/ConfigureLog-config.txt

@@ -28,7 +28,7 @@ events:(
 ]*)+
     buildResult:
       variable: "CMAKE_C_ABI_COMPILED"
-      cached: true
+      cached: false
       stdout: \|.*
       exitCode: 0(
 +  -