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-rw-r--r--Help/command/project.rst2
-rw-r--r--Source/cmProjectCommand.cxx20
-rw-r--r--Tests/RunCMake/project/ProjectTwice.cmake26
-rw-r--r--Tests/RunCMake/project/RunCMakeTest.cmake1
4 files changed, 37 insertions, 12 deletions
diff --git a/Help/command/project.rst b/Help/command/project.rst
index c1de057..bd8b4ef 100644
--- a/Help/command/project.rst
+++ b/Help/command/project.rst
@@ -44,6 +44,7 @@ Variables corresponding to unspecified versions are set to the empty string
If the optional ``DESCRIPTION`` is given, then :variable:`PROJECT_DESCRIPTION`
and :variable:`<PROJECT-NAME>_DESCRIPTION` will be set to its argument.
+These variables will be cleared if ``DESCRIPTION`` is not given.
The description is expected to be a relatively short string, usually no more
than a few words.
@@ -51,6 +52,7 @@ The optional ``HOMEPAGE_URL`` sets the analogous variables
:variable:`PROJECT_HOMEPAGE_URL` and :variable:`<PROJECT-NAME>_HOMEPAGE_URL`.
When this option is given, the URL provided should be the canonical home for
the project.
+These variables will be cleared if ``HOMEPAGE_URL`` is not given.
Note that the description and homepage URL may be used as defaults for
things like packaging meta-data, documentation, etc.
diff --git a/Source/cmProjectCommand.cxx b/Source/cmProjectCommand.cxx
index 305c7a6..8f565c8 100644
--- a/Source/cmProjectCommand.cxx
+++ b/Source/cmProjectCommand.cxx
@@ -300,19 +300,15 @@ bool cmProjectCommand::InitialPass(std::vector<std::string> const& args,
}
}
- if (haveDescription) {
- this->Makefile->AddDefinition("PROJECT_DESCRIPTION", description.c_str());
- this->Makefile->AddDefinition(projectName + "_DESCRIPTION",
- description.c_str());
- TopLevelCMakeVarCondSet("CMAKE_PROJECT_DESCRIPTION", description.c_str());
- }
+ this->Makefile->AddDefinition("PROJECT_DESCRIPTION", description.c_str());
+ this->Makefile->AddDefinition(projectName + "_DESCRIPTION",
+ description.c_str());
+ TopLevelCMakeVarCondSet("CMAKE_PROJECT_DESCRIPTION", description.c_str());
- if (haveHomepage) {
- this->Makefile->AddDefinition("PROJECT_HOMEPAGE_URL", homepage.c_str());
- this->Makefile->AddDefinition(projectName + "_HOMEPAGE_URL",
- homepage.c_str());
- TopLevelCMakeVarCondSet("CMAKE_PROJECT_HOMEPAGE_URL", homepage.c_str());
- }
+ this->Makefile->AddDefinition("PROJECT_HOMEPAGE_URL", homepage.c_str());
+ this->Makefile->AddDefinition(projectName + "_HOMEPAGE_URL",
+ homepage.c_str());
+ TopLevelCMakeVarCondSet("CMAKE_PROJECT_HOMEPAGE_URL", homepage.c_str());
if (languages.empty()) {
// if no language is specified do c and c++
diff --git a/Tests/RunCMake/project/ProjectTwice.cmake b/Tests/RunCMake/project/ProjectTwice.cmake
new file mode 100644
index 0000000..d053834
--- /dev/null
+++ b/Tests/RunCMake/project/ProjectTwice.cmake
@@ -0,0 +1,26 @@
+cmake_policy(SET CMP0048 NEW)
+project(ProjectTwiceTestFirst
+ VERSION 1.2.3.4
+ DESCRIPTION "Test Project"
+ HOMEPAGE_URL "http://example.com"
+ LANGUAGES NONE
+)
+
+project(ProjectTwiceTestSecond LANGUAGES NONE)
+
+foreach(var
+ PROJECT_VERSION
+ PROJECT_VERSION_MAJOR
+ PROJECT_VERSION_MINOR
+ PROJECT_VERSION_PATCH
+ PROJECT_VERSION_TWEAK
+ PROJECT_DESCRIPTION
+ PROJECT_HOMEPAGE_URL
+)
+ if(${var})
+ message(SEND_ERROR "${var} set but should be empty")
+ endif()
+ if(CMAKE_${var})
+ message(SEND_ERROR "CMAKE_${var} set but should be empty")
+ endif()
+endforeach()
diff --git a/Tests/RunCMake/project/RunCMakeTest.cmake b/Tests/RunCMake/project/RunCMakeTest.cmake
index e9fb929..3a8ad4b 100644
--- a/Tests/RunCMake/project/RunCMakeTest.cmake
+++ b/Tests/RunCMake/project/RunCMakeTest.cmake
@@ -15,6 +15,7 @@ run_cmake(ProjectDescriptionNoArg2)
run_cmake(ProjectHomepage)
run_cmake(ProjectHomepage2)
run_cmake(ProjectHomepageNoArg)
+run_cmake(ProjectTwice)
run_cmake(VersionAndLanguagesEmpty)
run_cmake(VersionEmpty)
run_cmake(VersionInvalid)