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-rw-r--r--Source/cmDocumentGeneratorExpressions.h3
-rw-r--r--Source/cmGeneratorExpressionEvaluator.cxx35
-rw-r--r--Tests/GeneratorExpression/CMakeLists.txt5
-rw-r--r--Tests/GeneratorExpression/check-part3.cmake8
4 files changed, 51 insertions, 0 deletions
diff --git a/Source/cmDocumentGeneratorExpressions.h b/Source/cmDocumentGeneratorExpressions.h
index 46cd77e..7bab741 100644
--- a/Source/cmDocumentGeneratorExpressions.h
+++ b/Source/cmDocumentGeneratorExpressions.h
@@ -40,6 +40,9 @@
"is exported using export(), or when the target is used by another " \
"target in the same buildsystem. Expands to the empty string " \
"otherwise.\n" \
+ " $<PLATFORM_ID> = The CMake-id of the platform " \
+ " $<PLATFORM_ID:comp> = '1' if the The CMake-id of the " \
+ "platform matches comp, otherwise '0'.\n" \
" $<C_COMPILER_ID> = The CMake-id of the C compiler " \
"used.\n" \
" $<C_COMPILER_ID:comp> = '1' if the CMake-id of the C " \
diff --git a/Source/cmGeneratorExpressionEvaluator.cxx b/Source/cmGeneratorExpressionEvaluator.cxx
index abe4e70..7fd0fdc 100644
--- a/Source/cmGeneratorExpressionEvaluator.cxx
+++ b/Source/cmGeneratorExpressionEvaluator.cxx
@@ -438,6 +438,39 @@ static const struct CxxCompilerVersionNode : public CompilerVersionNode
//----------------------------------------------------------------------------
+struct PlatformIdNode : public cmGeneratorExpressionNode
+{
+ PlatformIdNode() {}
+
+ virtual int NumExpectedParameters() const { return ZeroOrMoreParameters; }
+
+ std::string Evaluate(const std::vector<std::string> &parameters,
+ cmGeneratorExpressionContext *context,
+ const GeneratorExpressionContent *,
+ cmGeneratorExpressionDAGChecker *) const
+ {
+ const char *platformId = context->Makefile ?
+ context->Makefile->GetSafeDefinition(
+ "CMAKE_SYSTEM_NAME") : "";
+ if (parameters.size() == 0)
+ {
+ return platformId ? platformId : "";
+ }
+
+ if (!platformId)
+ {
+ return parameters.front().empty() ? "1" : "0";
+ }
+
+ if (cmsysString_strcasecmp(parameters.begin()->c_str(), platformId) == 0)
+ {
+ return "1";
+ }
+ return "0";
+ }
+} platformIdNode;
+
+//----------------------------------------------------------------------------
static const struct VersionGreaterNode : public cmGeneratorExpressionNode
{
VersionGreaterNode() {}
@@ -1356,6 +1389,8 @@ cmGeneratorExpressionNode* GetNode(const std::string &identifier)
return &cCompilerVersionNode;
else if (identifier == "CXX_COMPILER_VERSION")
return &cxxCompilerVersionNode;
+ else if (identifier == "PLATFORM_ID")
+ return &platformIdNode;
else if (identifier == "CONFIGURATION")
return &configurationNode;
else if (identifier == "CONFIG")
diff --git a/Tests/GeneratorExpression/CMakeLists.txt b/Tests/GeneratorExpression/CMakeLists.txt
index 4d8d7ed..47e7882 100644
--- a/Tests/GeneratorExpression/CMakeLists.txt
+++ b/Tests/GeneratorExpression/CMakeLists.txt
@@ -186,6 +186,11 @@ add_custom_target(check-part3 ALL
-Dtest_alias_target_name=$<STREQUAL:$<TARGET_PROPERTY:Alias::SomeLib,NAME>,$<TARGET_PROPERTY:empty1,NAME>>
-Dtest_early_termination_1=$<$<1:>:
-Dtest_early_termination_2=$<$<1:>:,
+ -Dsystem_name=${CMAKE_HOST_SYSTEM_NAME}
+ -Dtest_platform_id=$<PLATFORM_ID>
+ -Dtest_platform_id_Linux=$<PLATFORM_ID:Linux>
+ -Dtest_platform_id_Windows=$<PLATFORM_ID:Windows>
+ -Dtest_platform_id_Darwin=$<PLATFORM_ID:Darwin>
-P ${CMAKE_CURRENT_SOURCE_DIR}/check-part3.cmake
COMMAND ${CMAKE_COMMAND} -E echo "check done (part 3 of 3)"
VERBATIM
diff --git a/Tests/GeneratorExpression/check-part3.cmake b/Tests/GeneratorExpression/check-part3.cmake
index 74a596c..93ea487 100644
--- a/Tests/GeneratorExpression/check-part3.cmake
+++ b/Tests/GeneratorExpression/check-part3.cmake
@@ -26,3 +26,11 @@ check(test_alias_file_lib "1")
check(test_alias_target_name "1")
check(test_early_termination_1 "$<:")
check(test_early_termination_2 "$<:,")
+check(test_platform_id "${system_name}")
+foreach(system Linux Windows Darwin)
+ if(system_name STREQUAL system)
+ check(test_platform_id_${system} 1)
+ else()
+ check(test_platform_id_${system} 0)
+ endif()
+endforeach()