diff options
author | Boris Kolpackov <boris@codesynthesis.com> | 2016-08-24 15:41:54 +0200 |
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committer | Boris Kolpackov <boris@codesynthesis.com> | 2016-08-24 15:41:54 +0200 |
commit | 3a8972b42f75e10e9a833bba58d65009e7bed7f3 (patch) | |
tree | cb350e533b967b828ece6a59ced5bb2caa932de7 /build2/cc/link | |
parent | feb55ebfdc536c32de2c173d108df5ee0004da44 (diff) |
Handle *.export.libs, distinguish interface and implementation dependencies
A library dependency on another libraries is either "interface" or
"implementation". If it is interface, then everyone who links to this library
should also link to the interface dependency, explicitly. A good example of
an interface dependency is a library API that is called in inline functions.
Interface dependencies of a library should be explicitly listed in the
*.export.libs (where we can also list target names). So the typical usage
will be along these lines:
import int_libs = libfoo%lib{foo}
import int_libs += ...
import imp_libs = libbar%lib{bar}
import imp_libs += ...
lib{baz}: ... $int_libs $imp_libs
lib{baz}: cxx.export.libs = $int_libs
Diffstat (limited to 'build2/cc/link')
-rw-r--r-- | build2/cc/link | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/build2/cc/link b/build2/cc/link index f6a16c0..aaf1cd7 100644 --- a/build2/cc/link +++ b/build2/cc/link @@ -39,6 +39,15 @@ namespace build2 private: friend class compile; + void + append_libraries (strings&, file&, bool) const; + + void + hash_libraries (sha256&, file&, bool) const; + + file& + resolve_library (name, scope&, lorder, optional<dir_paths>&) const; + // Extract system library search paths from GCC or compatible (Clang, // Intel) using the -print-search-dirs option. // @@ -58,15 +67,26 @@ namespace build2 bin::liba* msvc_search_static (const process_path&, const dir_path&, - prerequisite&) const; + const prerequisite_key&) const; bin::libs* msvc_search_shared (const process_path&, const dir_path&, - prerequisite&) const; + const prerequisite_key&) const; target* - search_library (optional<dir_paths>&, prerequisite&) const; + search_library (optional<dir_paths>& spc, prerequisite& p) const + { + if (p.target == nullptr) // First check the cache. + p.target = search_library (spc, p.key ()); + + return p.target; + } + + // Note that pk's scope should not be NULL (even if dir is absolute). + // + target* + search_library (optional<dir_paths>&, const prerequisite_key&) const; // Windows-specific (windows-manifest.cxx). // |