ENH: Make add_custom_command interpret relative OUTPUT locations with respect to the build tre instead of the source tree. This can greatly simplify user code since generating a file will not need to reference CMAKE_CURRENT_BINARY_DIR. The new behavior is what users expect 99% of the time.

This commit is contained in:
Brad King 2008-01-30 11:22:10 -05:00
parent d5db5a275a
commit e9503a174e
2 changed files with 14 additions and 1 deletions

View File

@ -152,7 +152,17 @@ bool cmAddCustomCommandCommand
case doing_outputs: case doing_outputs:
if (!cmSystemTools::FileIsFullPath(copy.c_str())) if (!cmSystemTools::FileIsFullPath(copy.c_str()))
{ {
filename = this->Makefile->GetStartDirectory(); // This is an output to be generated, so it should be
// under the build tree. CMake 2.4 placed this under the
// source tree. However the only case that this change
// will break is when someone writes
//
// add_custom_command(OUTPUT out.txt ...)
//
// and later references "${CMAKE_CURRENT_SOURCE_DIR}/out.txt".
// This is fairly obscure so we can wait for someone to
// complain.
filename = this->Makefile->GetCurrentOutputDirectory();
filename += "/"; filename += "/";
} }
filename += copy; filename += copy;

View File

@ -78,6 +78,9 @@ public:
"This defines a new command that can be executed during the build " "This defines a new command that can be executed during the build "
"process. The outputs named should be listed as source files in the " "process. The outputs named should be listed as source files in the "
"target for which they are to be generated. " "target for which they are to be generated. "
"If an output name is a relative path it will be interpreted "
"relative to the build tree directory corresponding to the current "
"source directory. "
"Note that MAIN_DEPENDENCY is completely optional and is " "Note that MAIN_DEPENDENCY is completely optional and is "
"used as a suggestion to visual studio about where to hang the " "used as a suggestion to visual studio about where to hang the "
"custom command. In makefile terms this creates a new target in the " "custom command. In makefile terms this creates a new target in the "