Fix find_soname when lld is the system linker

Signed-off-by: Tobias Kortkamp <tobik@FreeBSD.org>

1 files changed, 95 insertions, 1 deletions

diff --git a/cmake/scripts/freebsd/Macros.cmake b/cmake/scripts/freebsd/Macros.cmake
index 2fdbb255f9..69edc9115d 120000..100644
--- a/cmake/scripts/freebsd/Macros.cmake
+++ b/cmake/scripts/freebsd/Macros.cmake
@@ -1 +1,95 @@
-../linux/Macros.cmake
\ No newline at end of file
+function(core_link_library lib wraplib)
+  set(export -Wl,--unresolved-symbols=ignore-all
+             `cat ${CMAKE_BINARY_DIR}/${CORE_BUILD_DIR}/cores/dll-loader/exports/wrapper.def`
+             ${CMAKE_BINARY_DIR}/${CORE_BUILD_DIR}/cores/dll-loader/exports/CMakeFiles/wrapper.dir/wrapper.c.o)
+  set(check_arg "")
+  if(TARGET ${lib})
+    set(target ${lib})
+    set(link_lib $<TARGET_FILE:${lib}>)
+    set(check_arg ${ARGV2})
+    set(data_arg  ${ARGV3})
+  else()
+    set(target ${ARGV2})
+    set(link_lib ${lib})
+    set(check_arg ${ARGV3})
+    set(data_arg ${ARGV4})
+  endif()
+
+  # wrapper has to be adapted in order to support coverage.
+  if(CMAKE_BUILD_TYPE STREQUAL Coverage)
+    set(export "")
+  endif()
+
+  if(check_arg STREQUAL export)
+    set(export ${export}
+        -Wl,--version-script=${ARGV3})
+  elseif(check_arg STREQUAL extras)
+    foreach(arg ${data_arg})
+      list(APPEND export ${arg})
+    endforeach()
+  elseif(check_arg STREQUAL archives)
+    set(extra_libs ${data_arg})
+  endif()
+
+  string(REGEX REPLACE "[ ]+" ";" _flags "${CMAKE_SHARED_LINKER_FLAGS}")
+  get_filename_component(dir ${wraplib} DIRECTORY)
+  add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/${wraplib}-${ARCH}${CMAKE_SHARED_MODULE_SUFFIX}
+                     COMMAND ${CMAKE_COMMAND} -E make_directory ${dir}
+                     COMMAND ${CMAKE_C_COMPILER}
+                     ARGS    ${_flags} -Wl,--whole-archive
+                             "${link_lib}" ${extra_libs}
+                             -Wl,--no-whole-archive -lm
+                             -Wl,-soname,${wraplib}-${ARCH}${CMAKE_SHARED_MODULE_SUFFIX}
+                             -shared -o ${CMAKE_BINARY_DIR}/${wraplib}-${ARCH}${CMAKE_SHARED_MODULE_SUFFIX}
+                             ${export}
+                     DEPENDS ${target} wrapper.def wrapper)
+
+  get_filename_component(libname ${wraplib} NAME_WE)
+  add_custom_target(wrap_${libname} ALL DEPENDS ${CMAKE_BINARY_DIR}/${wraplib}-${ARCH}${CMAKE_SHARED_MODULE_SUFFIX})
+  set_target_properties(wrap_${libname} PROPERTIES FOLDER lib/wrapped)
+  add_dependencies(${APP_NAME_LC}-libraries wrap_${libname})
+
+  set(LIBRARY_FILES ${LIBRARY_FILES} ${CMAKE_BINARY_DIR}/${wraplib}-${ARCH}${CMAKE_SHARED_MODULE_SUFFIX} CACHE STRING "" FORCE)
+endfunction()
+
+function(find_soname lib)
+  cmake_parse_arguments(arg "REQUIRED" "" "" ${ARGN})
+
+  string(TOLOWER ${lib} liblow)
+  if(${lib}_LDFLAGS)
+    set(link_lib "${${lib}_LDFLAGS}")
+  else()
+    if(IS_ABSOLUTE "${${lib}_LIBRARIES}")
+      set(link_lib "${${lib}_LIBRARIES}")
+    else()
+      set(link_lib -l${${lib}_LIBRARIES})
+    endif()
+  endif()
+  execute_process(COMMAND ${CMAKE_C_COMPILER} -nostdlib -o /dev/null -Wl,-M ${link_lib} 
+                  COMMAND grep LOAD.*${liblow}
+                  ERROR_QUIET
+                  OUTPUT_VARIABLE ${lib}_FILENAME)
+  string(REPLACE "LOAD " "" ${lib}_FILENAME "${${lib}_FILENAME}")
+  string(STRIP "${${lib}_FILENAME}" ${lib}_FILENAME)
+  if(NOT ${lib}_FILENAME)
+    execute_process(COMMAND ${CMAKE_C_COMPILER} -nostdlib -o /dev/null -Wl,-t ${link_lib}
+                    ERROR_QUIET
+                    OUTPUT_VARIABLE _TMP_FILENAME)
+    string(REGEX MATCH ".*lib${liblow}.so" ${lib}_FILENAME ${_TMP_FILENAME})
+  endif()
+  if(${lib}_FILENAME)
+    execute_process(COMMAND ${CMAKE_OBJDUMP} -p ${${lib}_FILENAME}
+                    COMMAND grep SONAME.*${liblow}
+                    ERROR_QUIET
+                    OUTPUT_VARIABLE ${lib}_SONAME)
+    string(REPLACE "SONAME " "" ${lib}_SONAME ${${lib}_SONAME})
+    string(STRIP ${${lib}_SONAME} ${lib}_SONAME)
+    if(VERBOSE)
+      message(STATUS "${lib} soname: ${${lib}_SONAME}")
+    endif()
+    set(${lib}_SONAME ${${lib}_SONAME} PARENT_SCOPE)
+  endif()
+  if(arg_REQUIRED AND NOT ${lib}_SONAME)
+    message(FATAL_ERROR "Could not find dynamically loadable library ${lib}")
+  endif()
+endfunction()