Use prusa-slicer executable dir to search for occt shared lib

.gitignore

@@ -18,4 +18,3 @@ local-lib
 build-linux/*
 deps/build-linux/*
 **/.DS_Store
-resources/plugins

src/libslic3r/Format/STEP.cpp

@@ -6,6 +6,7 @@
 #include "libslic3r/Utils.hpp"
 
 #include <boost/filesystem.hpp>
+#include <boost/dll/runtime_symbol_info.hpp>
 
 #include <string>
 #include <functional>
@@ -27,7 +28,7 @@ LoadStepFn get_load_step_fn()
     constexpr const char* fn_name = "load_step_internal";
 
     if (!load_step_fn) {
-        auto libpath = boost::filesystem::path(resources_dir()) / "plugins";
+        auto libpath = boost::dll::program_location().parent_path();
 #ifdef _WIN32
         libpath /= "OCCTWrapper.dll";
         HMODULE module = LoadLibraryW(libpath.wstring().c_str());

src/occt_wrapper/CMakeLists.txt

@@ -5,8 +5,8 @@ add_library(OCCTWrapper MODULE OCCTWrapper.cpp)
 
 set_target_properties(OCCTWrapper
     PROPERTIES
-    LIBRARY_OUTPUT_DIRECTORY "${SLIC3R_RESOURCES_DIR}/plugins"
-    RUNTIME_OUTPUT_DIRECTORY "${SLIC3R_RESOURCES_DIR}/plugins"
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/src"
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/src"
     PREFIX ""
 )
 
@@ -49,3 +49,5 @@ target_include_directories(OCCTWrapper PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
 target_include_directories(OCCTWrapper PUBLIC ${OpenCASCADE_INCLUDE_DIR})
 target_link_libraries(OCCTWrapper ${OCCT_LIBS})
 
+install(TARGETS OCCTWrapper DESTINATION "${CMAKE_INSTALL_BINDIR}")
+