Add export symbol support to CMake

1 files changed, 41 insertions, 0 deletions

diff --git a/cmake_export_symbol.cmake b/cmake_export_symbol.cmake
new file mode 100644
index 0000000..7dde938
--- /dev/null
+++ b/cmake_export_symbol.cmake
@@ -0,0 +1,41 @@
+macro(export_symbol TARGET FILENAME)
+
+        set(FLAG "")
+
+        if(WIN32)
+                string(REPLACE ".sym" ".def" DEF_FILENAME ${FILENAME})
+                target_sources(${TARGET} PRIVATE ${DEF_FILENAME})
+
+        elseif(APPLE)
+                set(FLAG "-exported_symbols_list ${FILENAME}")
+                set_target_properties(${TARGET} PROPERTIES LINK_FLAGS ${FLAG})
+
+        elseif(CMAKE_SYSTEM_NAME MATCHES "HP-UX")
+                file(READ ${FILENAME} SYMBOLS)
+                string(REGEX REPLACE "\n$" "" SYMBOLS ${SYMBOLS})
+                string(REPLACE "\n" "\n+e " SYMBOLS ${SYMBOLS})
+                string(REPLACE ".sym" ".opt" OPT_FILENAME ${FILENAME})
+                file(WRITE ${OPT_FILENAME} "+e ${SYMBOLS}")
+                set(FLAG "-Wl,-c,${OPT_FILENAME}")
+                set_target_properties(${TARGET} PROPERTIES LINK_FLAGS ${FLAG})
+
+        elseif(CMAKE_SYSTEM_NAME MATCHES "SunOS")
+                file(READ ${FILENAME} SYMBOLS)
+                string(REPLACE "\n" ";\n" SYMBOLS ${SYMBOLS})
+                string(REPLACE ".sym" ".ver" VER_FILENAME ${FILENAME})
+                file(WRITE ${VER_FILENAME}
+                        "{\nglobal:\n${SYMBOLS}\nlocal:\n*;\n};\n")
+                set(FLAG "-Wl,-M${VER_FILENAME}")
+                set_target_properties(${TARGET} PROPERTIES LINK_FLAGS ${FLAG})
+
+        elseif(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
+                file(READ ${FILENAME} SYMBOLS)
+                string(REPLACE "\n" ";\n" SYMBOLS ${SYMBOLS})
+                string(REPLACE ".sym" ".ver" VER_FILENAME ${FILENAME})
+                file(WRITE ${VER_FILENAME}
+                        "{\nglobal:\n${SYMBOLS}\nlocal:\n*;\n};\n")
+                set(FLAG "-Wl,--version-script,\"${VER_FILENAME}\"")
+                set_target_properties(${TARGET} PROPERTIES LINK_FLAGS ${FLAG})
+        endif()
+
+endmacro()