STYLE: Added note about singular versus plural name for XXX_INCLUDE_DIRS. Added XXX_LIBRARY_DIRS and XXX_YY_INCLUDE_DIR conventions.

This commit is contained in:
Brad King 2006-07-18 13:16:38 -04:00
parent 475c37b6a5
commit 48571e9d80

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@ -4,11 +4,12 @@ We would like all FindXXX.cmake files to produce consistent variable names.
Please use the following consistent variable names for general use.
XXX_INCLUDE_DIR Where to find xxx.h, etc. If for some reason, you really need two paths, then that shouldn't be a problem - however, consider if you really should have two different FindXXX.cmake files. (XXX_INCLUDE_PATH was considered bad because a path includes an actual filename.)
XXX_LIBRARIES The libraries to link against to use XXX. These should include full paths.
XXX_INCLUDE_DIRS The final set of include directories listed in one variable for use by client code. This should not be a cache entry.
XXX_LIBRARIES The libraries to link against to use XXX. These should include full paths. This should not be a cache entry.
XXX_DEFINITIONS Definitions to use when compiling code that uses XXX. This really shouldn't include options such as (-DHAS_JPEG)that a client source-code file uses to decide whether to #include <jpeg.h>
XXX_EXECUTABLE Where to find the XXX tool.
XXX_YYY_EXECUTABLE Where to find the YYY tool that comes with XXX.
XXX_LIBRARY_DIRS Optionally, the final set of library directories listed in one variable for use by client code. This should not be a cache entry.
XXX_ROOT_DIR Where to find the base directory of XXX.
XXX_VERSION_YY Expect Version YY if true. Make sure at most one of these is ever true.
XXX_WRAP_YY If False, do not try to use the relevent CMake wrapping command.
@ -21,6 +22,8 @@ The following names should not usually be used in CMakeLists.txt files, but they
XXX_LIBRARY Name of XXX Library. A User may set this and XXX_INCLUDE_DIR to ignore to force non-use of XXX.
XXX_YY_LIBRARY Name of YY library that is part of the XXX system. It may or may not be required to use XXX.
XXX_INCLUDE_DIR Where to find xxx.h, etc. (XXX_INCLUDE_PATH was considered bad because a path includes an actual filename.)
XXX_YY_INCLUDE_DIR Where to find xxx_yy.h, etc.
For tidiness's sake, try to keep as many options as possible out of the cache, leaving at least one option which can be used to disable use of the module, or locate a not-found library (e.g. XXX_ROOT_DIR). For the same reason, mark most cache options as advanced.