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Optionally allow IMPORTED targets to be globally visible

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Consider the case motivating commit e01cce28 (Allow add_dependencies()
on imported targets, 2010-11-19).  An imported target references a file
generated at build time by a custom target on which it depends.  Had the
file been built directly using add_library or add_executable its target
name would have been visible globally.  Therefore the imported target
representing the file should be globally visible also.

Teach the IMPORTED signature of add_(executable|library) to accept a new
"GLOBAL" option to make the imported target visible globally.
This commit is contained in:
Brad King
2012-01-25 13:39:26 -05:00
parent 731f996ce0
commit ca39c5cdd1
8 changed files with 45 additions and 13 deletions
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5
Source/cmAddLibraryCommand.h
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@@ -96,12 +96,13 @@ public:
"\n"
"The add_library command can also create IMPORTED library "
"targets using this signature:\n"
" add_library(<name> <SHARED|STATIC|MODULE|UNKNOWN> IMPORTED)\n"
" add_library(<name> <SHARED|STATIC|MODULE|UNKNOWN> IMPORTED\n"
" [GLOBAL])\n"
"An IMPORTED library target references a library file located "
"outside the project. "
"No rules are generated to build it. "
"The target name has scope in the directory in which it is created "
"and below. "
"and below, but the GLOBAL option extends visibility. "
"It may be referenced like any target built within the project. "
"IMPORTED libraries are useful for convenient reference from "
"commands like target_link_libraries. "