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- bug fix where paths weren't being output when LIB_OUT_PATH *isn't* used 

- test case for above mentioned bug
- more comments. Comments are good.
This commit is contained in:
Amitha Perera 2002-05-03 00:27:34 -04:00
parent 0838265fdc
commit 4bff970413
4 changed files with 98 additions and 39 deletions
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13
Source/CMakeLists.txt
View File

@ -163,11 +163,18 @@ IF(BUILD_TESTING)
${CMake_BINARY_DIR}/Tests/Wrapping/bin
TestDriverTest subdir/test3)
ADD_TEST(dependency ${CMake_BINARY_DIR}/Source/cmaketest
ADD_TEST(dependency_w_libout ${CMake_BINARY_DIR}/Source/cmaketest
${CMake_SOURCE_DIR}/Tests/Dependency
${CMake_BINARY_DIR}/Tests/Dependency
${CMake_BINARY_DIR}/Tests/Dependency/WithLibOut
exec
${CMake_BINARY_DIR}/Tests/Dependency/Exec
${CMake_BINARY_DIR}/Tests/Dependency/WithLibOut/Exec
Dependency CMAKE_ARGS -DLIBRARY_OUTPUT_PATH:PATH=${CMake_BINARY_DIR}/Tests/Dependency/WithLibOut/Lib)
ADD_TEST(dependency_wo_lib_out ${CMake_BINARY_DIR}/Source/cmaketest
${CMake_SOURCE_DIR}/Tests/Dependency
${CMake_BINARY_DIR}/Tests/Dependency/WOLibOut
exec
${CMake_BINARY_DIR}/Tests/Dependency/WOLibOut/Exec
Dependency)
ENDIF (DART_ROOT)

80
Source/cmTarget.cxx
View File

@ -139,6 +139,32 @@ bool cmTarget::HasCxx() const
void
cmTarget::AnalyzeLibDependencies( const cmMakefile& mf )
{
// There are two key parts of the dependency analysis: (1)
// determining the libraries in the link line, and (2) constructing
// the dependency graph for those libraries.
//
// The latter is done using the cache entries that record the
// dependencies of each library.
//
// The former is a more thorny issue, since it is not clear how to
// determine if two libraries listed on the link line refer to the a
// single library or not. For example, consider the link "libraries"
// /usr/lib/libtiff.so -ltiff
// Is this one library or two? The solution implemented here is the
// simplest (and probably the only practical) one: two libraries are
// the same if their "link strings" are identical. Thus, the two
// libraries above are considered distinct. This also means that for
// dependency analysis to be effective, the CMake user must specify
// libraries build by his project without using any linker flags or
// file extensions. That is,
// LINK_LIBRARIES( One Two )
// instead of
// LINK_LIBRARIES( -lOne ${binarypath}/libTwo.a )
// The former is probably what most users would do, but it never
// hurts to document the assumptions. :-) Therefore, in the analysis
// code, the "canonical name" of a library is simply its name as
// given to a LINK_LIBRARIES command.
typedef std::vector< std::string > LinkLine;
// Maps the canonical names to the full objects of m_LinkLibraries.
@ -146,7 +172,8 @@ cmTarget::AnalyzeLibDependencies( const cmMakefile& mf )
// The unique list of libraries on the orginal link line. They
// correspond to lib_map keys. However, lib_map will also get
// further populated by the dependency analysis.
// further populated by the dependency analysis, while this will be
// unchanged.
LinkLine orig_libs;
// The list canonical names in the order they were orginally
@ -156,6 +183,10 @@ cmTarget::AnalyzeLibDependencies( const cmMakefile& mf )
// The dependency maps.
DependencyMap dep_map, dep_map_implicit;
// 1. Determine the list of unique libraries in the original link
// line.
LinkLibraries::iterator lib;
for(lib = m_LinkLibraries.begin(); lib != m_LinkLibraries.end(); ++lib)
{
@ -163,7 +194,7 @@ cmTarget::AnalyzeLibDependencies( const cmMakefile& mf )
// if a variable expands to nothing.
if (lib->first.size() == 0) continue;
std::string cname = lib->first;
const std::string& cname = lib->first;
lib_order.push_back( cname );
if( lib_map.end() == lib_map.find( cname ) )
{
@ -172,11 +203,18 @@ cmTarget::AnalyzeLibDependencies( const cmMakefile& mf )
}
}
// 2. Gather the dependencies.
// If LIBRARY_OUTPUT_PATH is not set, then we must add search paths
// for all the new libraries added by the dependency analysis.
const char* libOutPath = mf.GetDefinition("LIBRARY_OUTPUT_PATH");
bool addLibDirs = (libOutPath==0 || strcmp(libOutPath,"")==0);
// First, get the explicit dependencies for those libraries that
// have specified them
// have specified them.
for( LinkLine::iterator i = orig_libs.begin(); i != orig_libs.end(); ++i )
{
this->GatherDependencies( mf, *i, dep_map, lib_map );
this->GatherDependencies( mf, *i, dep_map, lib_map, addLibDirs );
}
// For the rest, get implicit dependencies. A library x depends
@ -216,7 +254,10 @@ cmTarget::AnalyzeLibDependencies( const cmMakefile& mf )
dep_map[ i->first ] = i->second;
}
// Create a new link line order.
// 3. Create a new link line, trying as much as possible to keep the
// original link line order.
// Get the link line as canonical names.
std::set<std::string> done, visited;
std::vector<std::string> link_line;
for( LinkLine::iterator i = orig_libs.begin(); i != orig_libs.end(); ++i )
@ -224,19 +265,14 @@ cmTarget::AnalyzeLibDependencies( const cmMakefile& mf )
Emit( *i, dep_map, done, visited, link_line );
}
// If LIBRARY_OUTPUT_PATH is not set, then we must add search paths
// for all the new libraries added by the dependency analysis.
const char* libOutPath = mf.GetDefinition("LIBRARY_OUTPUT_PATH");
bool addLibDirs = (libOutPath==0 || strcmp(libOutPath,"")==0);
// Translate the canonical names into internal objects.
m_LinkLibraries.clear();
for( std::vector<std::string>::reverse_iterator i = link_line.rbegin();
i != link_line.rend(); ++i )
{
// Some of the libraries in the new link line may not have been in
// the orginal link line, but were added by the dependency
// analysis. For these libraries, we assume the GENERAL type and
// add the name of the library.
// analysis.
if( lib_map.find(*i) == lib_map.end() )
{
if( addLibDirs )
@ -317,7 +353,8 @@ void cmTarget::Emit( const std::string& lib,
void cmTarget::GatherDependencies( const cmMakefile& mf,
const std::string& lib,
DependencyMap& dep_map,
LibTypeMap& lib_map ) const
LibTypeMap& lib_map,
bool addLibDirs )
{
// If the library is already in the dependency map, then it has
// already been fully processed.
@ -343,7 +380,20 @@ void cmTarget::GatherDependencies( const cmMakefile& mf,
std::string l = depline.substr( start, end-start );
if( l.size() != 0 )
{
const std::string cname = l;
if( addLibDirs )
{
const char* libpath = mf.GetDefinition( l.c_str() );
if( libpath )
{
// Don't add a link directory that is already present.
if(std::find(m_LinkDirectories.begin(),
m_LinkDirectories.end(), libpath) == m_LinkDirectories.end())
{
m_LinkDirectories.push_back(libpath);
}
}
}
const std::string& cname = l;
std::string linkType = l;
linkType += "_LINK_TYPE";
cmTarget::LinkLibraryType llt = cmTarget::GENERAL;
@ -361,7 +411,7 @@ void cmTarget::GatherDependencies( const cmMakefile& mf,
}
lib_map[ cname ] = std::make_pair(l,llt);
dep_map[ lib ].insert( cname );
GatherDependencies( mf, cname, dep_map, lib_map );
GatherDependencies( mf, cname, dep_map, lib_map, addLibDirs );
}
start = end+1; // skip the ;
end = depline.find( ";", start );

10
Source/cmTarget.h
View File

@ -121,7 +121,7 @@ private:
typedef std::map< std::string, std::set< std::string > > DependencyMap;
/**
* Maps a canonical library name to it's proper type
* Maps a library name to its internal structure
*/
typedef std::map< std::string, std::pair<std::string,LinkLibraryType> > LibTypeMap;
@ -141,11 +141,15 @@ private:
/**
* Finds the explicit dependencies for \param lib, if they have been
* specified, and inserts them into \param dep_map.
* specified, and inserts them into \param dep_map. It also adds the
* maps from the library names to internal structures for any
* libraries introduced by the analysis. \param addLibDirs is true
* if paths to newly found libraries should be added to the search
* path.
*/
void GatherDependencies( const cmMakefile& mf, const std::string& lib,
DependencyMap& dep_map,
LibTypeMap& lib_map ) const;
LibTypeMap& lib_map, bool addLibDirs );
/**
* Returns true if lib1 depends on lib2 according to \param

34
Tests/Dependency/CMakeLists.txt
View File

@ -1,27 +1,25 @@
PROJECT( Dependency )
SET( LIBRARY_OUTPUT_PATH ${Dependency_BINARY_DIR}/Lib )
SET( CMAKE_ANALYZE_LIB_DEPENDS "ON" )
# There is one executable that depends on eight libraries. The
# system has the following dependency graph:
#
# +----------- NoDepC <---- EXECUTABLE
# | | |
# V | |
# | |
# NoDepA <----- NoDepB <-------+ |
# |
# ^ |
# +----------- NoDepC <---- EXECUTABLE ---+
# | | | |
# V | | |
# | | |
# NoDepA <----- NoDepB <-------+ | |
# | |
# ^ | V
# | |
# One <------ Four -----> Two <----- Five <---+
# |
# ^ ^ ^ | ^ ^ ^
# | | +-----+ | | | +----+
# | | | | | | |
# +--------- Three <------+ +------- SixA SixB
# | |
# +-----------------------+
# One <------ Four -----> Two <----- Five <---|----- SixB
# | | |
# ^ ^ ^ | ^ ^ | |
# | | +-----+ | \ | | |
# | | | | \ | | |
# +--------- Three <------+ --- SixA <----+ |
# | |
# | |
# +---------------------------------+
# NoDepA:
# NoDepB: NoDepA
# NoDepC: NoDepA