Specify link dependencies for static build

For static linking we need to specify the link dependencies via the
pkg-config and FindLibSolv.cmake files as well, so statically linked
application can refer to them.

Author: bzeller

CMakeLists.txt

@@ -57,7 +57,6 @@ ENDIF (NOT PKGCONFIG_INSTALL_DIR)
 
 # where to look first for cmake modules, before ${CMAKE_ROOT}/Modules/ is checked
 SET (CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules)
-INSTALL( FILES ${CMAKE_MODULE_PATH}/FindLibSolv.cmake DESTINATION ${CMAKE_INSTALL_PREFIX}/share/cmake/Modules )
 
 # for shared libraries on windows (DLLs), we just export all symbols for now
 SET(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
@@ -434,6 +433,32 @@ ENDIF (ENABLE_RPMDB)
 IF (ENABLE_HAIKU)
 SET (SYSTEM_LIBRARIES ${HAIKU_SYSTEM_LIBRARIES} ${SYSTEM_LIBRARIES})
 ENDIF (ENABLE_HAIKU)
+
+# For static libs we need to remember the link dependencies as well
+IF (ENABLE_STATIC)
+  foreach( _lib_dep_path ${SYSTEM_LIBRARIES})
+    get_filename_component( _lib_dep_dir ${_lib_dep_path} PATH )
+    get_filename_component( _lib_dep ${_lib_dep_path} NAME_WE )
+
+    string( REGEX REPLACE "^lib" "" _lib_dep ${_lib_dep} )
+
+    set( _newDirEntry  "-L${_lib_dep_dir}")
+    set( _newFileEntry "-l${_lib_dep}" )
+
+    list (FIND SOLVEXT_LIB_DEPENDENCIES_LIST ${_newDirEntry} _index)
+    if (${_index} LESS_EQUAL -1)
+      list( APPEND SOLVEXT_LIB_DEPENDENCIES_LIST ${_newDirEntry} )
+    endif()
+
+    list (FIND SOLVEXT_LIB_DEPENDENCIES_LIST ${_newFileEntry} _index)
+    if (${_index} LESS_EQUAL -1)
+      list( APPEND SOLVEXT_LIB_DEPENDENCIES_LIST ${_newFileEntry} )
+    endif()
+
+  endforeach()
+  list(JOIN SOLVEXT_LIB_DEPENDENCIES_LIST " " SOLVEXT_LIB_DEPENDENCIES )
+ENDIF()
+
 IF (HAVE_LINKER_AS_NEEDED)
 SET (SYSTEM_LIBRARIES "-Wl,--as-needed" ${SYSTEM_LIBRARIES})
 ENDIF (HAVE_LINKER_AS_NEEDED)
@@ -449,6 +474,11 @@ ADD_SUBDIRECTORY (doc)
 
 MESSAGE (STATUS "Version: ${VERSION}")
 
+# FindLibsolv
+SET( LIBSOLV_EXT_DEPS "set(LIBSOLV_EXT_LIBRARY_DEPS ${SOLVEXT_LIB_DEPENDENCIES} )" )
+CONFIGURE_FILE (${CMAKE_MODULE_PATH}/FindLibSolv.cmake.in ${CMAKE_BINARY_DIR}/cmake/modules/FindLibSolv.cmake @ONLY)
+INSTALL( FILES ${CMAKE_BINARY_DIR}/cmake/modules/FindLibSolv.cmake DESTINATION ${CMAKE_INSTALL_PREFIX}/share/cmake/Modules )
+
 ####################################################################
 # RPM SPEC                                                         #
 ####################################################################

cmake/modules/FindLibSolv.cmake cmake/modules/FindLibSolv.cmake.incmake/modules/FindLibSolv.cmake renamed to cmake/modules/FindLibSolv.cmake.in

@@ -66,6 +66,10 @@ MARK_AS_ADVANCED(
     LibSolv_INCLUDE_DIRS
 )
 
+IF(LibSolv_USE_STATIC_LIBS)
+  @LIBSOLV_EXT_DEPS@
+ENDIF()
+
 # Look for components
 FOREACH(COMPONENT ${LibSolv_FIND_COMPONENTS})
     STRING(TOUPPER ${COMPONENT} _UPPERCOMPONENT)
@@ -79,7 +83,7 @@ FOREACH(COMPONENT ${LibSolv_FIND_COMPONENTS})
 	LIBSOLV_${_UPPERCOMPONENT}_LIBRARY
     )
     IF(LIBSOLV_${_UPPERCOMPONENT}_FOUND)
-	SET(LibSolv_LIBRARIES ${LibSolv_LIBRARIES} ${LIBSOLV_${_UPPERCOMPONENT}_LIBRARY})
+        SET(LibSolv_LIBRARIES ${LibSolv_LIBRARIES} ${LIBSOLV_${_UPPERCOMPONENT}_LIBRARY} ${LIBSOLV_${_UPPERCOMPONENT}_LIBRARY_DEPS})
     ELSE()
 	SET(LibSolv_FOUND FALSE)
     ENDIF()

libsolvext.pc.in

@@ -5,5 +5,5 @@ Name: libsolvext
 Description: Library for reading repositories
 Version: @VERSION@
 Requires: libsolv
-Libs: -L${libdir} -lsolvext
+Libs: -L${libdir} -lsolvext @SOLVEXT_LIB_DEPENDENCIES@
 Cflags: -I${includedir}

package/libsolv.spec.in

@@ -160,6 +160,26 @@ Group:          Development/Libraries/C and C++
 %if %{with shared}
 Requires:       %{libname} = %version
 %endif
+
+%if %{with static}
+Requires:  libxml2-devel
+Requires:  zlib-devel
+%if %{with bz2}
+%if 0%{?suse_version}
+Requires:  libbz2-devel
+%else
+Requires:  bzip2-devel
+%endif
+
+%endif
+%if %{with xz}
+Requires:  xz-devel
+%endif
+
+%if %{with zstd}
+Requires:  libzstd-devel
+%endif
+%endif
 Requires:       rpm-devel
 Conflicts:      libsatsolver-devel