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authorBrad King <brad.king@kitware.com>2018-04-02 13:59:50 (GMT)
committerKitware Robot <kwrobot@kitware.com>2018-04-02 14:00:20 (GMT)
commit5d5e1e691772ecfd9224be0afe33802f8aee3fc3 (patch)
treebbe53ba8fa22719befa53c357d33f9e7261f45d0 /Modules/Compiler
parenta0b5dade9a494783e7b130e27e1dbc12fa1772c6 (diff)
parenta53cf69022e57d859864d59b9c03238f180cb400 (diff)
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Merge topic 'features-msvc-c'
a53cf69022 Features: Record C features for MSVC e62dfeccb1 Features: Do not assume c_restrict support in CompileFeatures test c22cdf78d7 Features: Fix CompileFeatures test checks for C Acked-by: Kitware Robot <kwrobot@kitware.com> Acked-by: Harry Mallon <hjmallon@gmail.com> Merge-request: !1897
Diffstat (limited to 'Modules/Compiler')
-rw-r--r--Modules/Compiler/MSVC-C-FeatureTests.cmake8
-rw-r--r--Modules/Compiler/MSVC-C.cmake25
2 files changed, 33 insertions, 0 deletions
diff --git a/Modules/Compiler/MSVC-C-FeatureTests.cmake b/Modules/Compiler/MSVC-C-FeatureTests.cmake
new file mode 100644
index 0000000..3f09be2
--- /dev/null
+++ b/Modules/Compiler/MSVC-C-FeatureTests.cmake
@@ -0,0 +1,8 @@
+set(_cmake_oldestSupported "_MSC_VER >= 1600")
+
+# Not yet supported:
+#set(_cmake_feature_test_c_static_assert "")
+#set(_cmake_feature_test_c_restrict "")
+
+set(_cmake_feature_test_c_variadic_macros "${_cmake_oldestSupported}")
+set(_cmake_feature_test_c_function_prototypes "${_cmake_oldestSupported}")
diff --git a/Modules/Compiler/MSVC-C.cmake b/Modules/Compiler/MSVC-C.cmake
new file mode 100644
index 0000000..22c34f8
--- /dev/null
+++ b/Modules/Compiler/MSVC-C.cmake
@@ -0,0 +1,25 @@
+# MSVC has no specific options to set C language standards, but set them as
+# empty strings anyways so the feature test infrastructure can at least check
+# to see if they are defined.
+set(CMAKE_C90_STANDARD_COMPILE_OPTION "")
+set(CMAKE_C90_EXTENSION_COMPILE_OPTION "")
+set(CMAKE_C99_STANDARD_COMPILE_OPTION "")
+set(CMAKE_C99_EXTENSION_COMPILE_OPTION "")
+set(CMAKE_C11_STANDARD_COMPILE_OPTION "")
+set(CMAKE_C11_EXTENSION_COMPILE_OPTION "")
+
+# There is no meaningful default for this
+set(CMAKE_C_STANDARD_DEFAULT "")
+
+# There are no C compiler modes so we only need to test features once.
+# Override the default macro for this special case. Pretend that
+# all language standards are available so that at least compilation
+# can be attempted.
+macro(cmake_record_c_compile_features)
+ list(APPEND CMAKE_C_COMPILE_FEATURES
+ c_std_90
+ c_std_99
+ c_std_11
+ )
+ _record_compiler_features(C "" CMAKE_C_COMPILE_FEATURES)
+endmacro()