only export olm functions to avoid colliding with other libraries

1b797362 · Hubert Chathi · d47c2a92 · 1b797362 · 1b797362
Commit 1b797362 authored Jun 16, 2021 by Hubert Chathi
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,6 +48,10 @@ add_library(olm
    lib/curve25519-donna/curve25519-donna.c)
 add_library(Olm::Olm ALIAS olm)

+# restrict the exported symbols
+set(CMAKE_SHARED_LINKER_FLAGS ${CMAKE_SHARED_LINKER_FLAGS} -Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/libolm.version)
+set_target_properties(olm PROPERTIES LINK_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/libolm.version)
+
 target_include_directories(olm
    PUBLIC
        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>

--- a/libolm.version
+++ b/libolm.version
+{
+  global: olm*; _olm*; megolm*; _ZN3olm*;
+  local: *;
+};