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Don't include generator expressions in old-style link handling. 

Don't add generator expressions to variables which are used
for CMP0003, CMP0004, and the old-style _LIB_DEPENDS content. They
will not be evaluated when read anyway and would probably confuse
the code reading them.

This makes it legitimate to use target_link_libraries with generator
expressions as arguments.
This commit is contained in:
Stephen Kelly 2012-12-23 19:00:18 +01:00
parent 9822f8c931
commit 1da75022bb
2 changed files with 20 additions and 0 deletions
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13
Source/cmTarget.cxx
View File

@ -2232,6 +2232,14 @@ static std::string targetNameGenex(const char *lib)
return std::string("$<TARGET_NAME:") + lib + ">"; return std::string("$<TARGET_NAME:") + lib + ">";
} }
//----------------------------------------------------------------------------
static bool isGeneratorExpression(const std::string &lib)
{
const std::string::size_type openpos = lib.find("$<");
return (openpos != std::string::npos)
&& (lib.find(">", openpos) != std::string::npos);
}
//---------------------------------------------------------------------------- //----------------------------------------------------------------------------
void cmTarget::AddLinkLibrary(cmMakefile& mf, void cmTarget::AddLinkLibrary(cmMakefile& mf,
const char *target, const char* lib, const char *target, const char* lib,
@ -2254,6 +2262,11 @@ void cmTarget::AddLinkLibrary(cmMakefile& mf,
llt).c_str()); llt).c_str());
} }
if (isGeneratorExpression(lib))
{
return;
}
cmTarget::LibraryID tmp; cmTarget::LibraryID tmp;
tmp.first = lib; tmp.first = lib;
tmp.second = llt; tmp.second = llt;

7
Source/cmTargetLinkLibrariesCommand.h
View File

@ -13,6 +13,7 @@
#define cmTargetLinkLibrariesCommand_h #define cmTargetLinkLibrariesCommand_h
#include "cmCommand.h" #include "cmCommand.h"
#include "cmDocumentGeneratorExpressions.h"
/** \class cmTargetLinkLibrariesCommand /** \class cmTargetLinkLibrariesCommand
* \brief Specify a list of libraries to link into executables. * \brief Specify a list of libraries to link into executables.
@ -141,6 +142,12 @@ public:
"However, if two archives are really so interdependent they should " "However, if two archives are really so interdependent they should "
"probably be combined into a single archive." "probably be combined into a single archive."
")" ")"
"\n"
"Arguments to target_link_libraries may use \"generator expressions\" "
"with the syntax \"$<...>\". Note however, that generator expressions "
"will not be used in OLD handling of CMP0003 or CMP0004."
"\n"
CM_DOCUMENT_COMMAND_GENERATOR_EXPRESSIONS
; ;
} }