Use resources dir for occt shared lib

.gitignore

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

CMakeLists.txt

@@ -33,6 +33,7 @@ option(SLIC3R_MSVC_COMPILE_PARALLEL "Compile on Visual Studio in parallel" 1)
 option(SLIC3R_MSVC_PDB          "Generate PDB files on MSVC in Release mode" 1)
 option(SLIC3R_PERL_XS           "Compile XS Perl module and enable Perl unit and integration tests" 0)
 option(SLIC3R_ASAN              "Enable ASan on Clang and GCC" 0)
+option(SLIC3R_ENABLE_FORMAT_STEP "Enable compilation of STEP file support" 1)
 # If SLIC3R_FHS is 1 -> SLIC3R_DESKTOP_INTEGRATION is always 0, othrewise variable.
 CMAKE_DEPENDENT_OPTION(SLIC3R_DESKTOP_INTEGRATION "Allow perfoming desktop integration during runtime" 1 "NOT SLIC3R_FHS" 0)
 

src/CMakeLists.txt

@@ -17,7 +17,10 @@ add_subdirectory(hints)
 add_subdirectory(qoi)
 add_subdirectory(libnest2d)
 add_subdirectory(libslic3r)
+
+if (SLIC3R_ENABLE_FORMAT_STEP)
     add_subdirectory(occt_wrapper)
+endif ()
 
 if (SLIC3R_GUI)
     add_subdirectory(imgui)

src/libslic3r/Format/STEP.cpp

@@ -3,6 +3,9 @@
 
 #include "libslic3r/Model.hpp"
 #include "libslic3r/TriangleMesh.hpp"
+#include "libslic3r/Utils.hpp"
+
+#include <boost/filesystem.hpp>
 
 #include <string>
 #include <functional>
@@ -24,8 +27,10 @@ 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";
 #ifdef _WIN32
-        HMODULE module = LoadLibraryW(L"OCCTWrapper.dll");
+        libpath /= "OCCTWrapper.dll";
+        HMODULE module = LoadLibraryW(libpath.wstring().c_str());
         if (module == NULL)
             throw Slic3r::RuntimeError("Cannot load OCCTWrapper.dll");
 
@@ -42,18 +47,17 @@ LoadStepFn get_load_step_fn()
             throw;
         }
 #else
-        void *plugin_ptr = dlopen("OCCTWrapper.so", RTLD_NOW | RTLD_GLOBAL);
+        libpath /= "OCCTWrapper.so";
+        void *plugin_ptr = dlopen(libpath.c_str(), RTLD_NOW | RTLD_GLOBAL);
 
         if (plugin_ptr) {
-            load_step_fn = reinterpret_cast<LoadStepFn>(dlsym(plugin_ptr, "load_step_internal"));
+            load_step_fn = reinterpret_cast<LoadStepFn>(dlsym(plugin_ptr, fn_name));
             if (!load_step_fn) {
                 dlclose(plugin_ptr);
-                throw Slic3r::RuntimeError("Cannot load function from OCCTWrapper.so");
+                BOOST_LOG_TRIVIAL(error) << dlerror();
             }
         } else {
-            throw Slic3r::RuntimeError(
+            BOOST_LOG_TRIVIAL(error) << dlerror();
-                std::string("Cannot load function from OCCTWrapper.dll: ") +
-                fn_name + "\n\nError code: " + dlerror());
         }
 #endif
     }

src/occt_wrapper/CMakeLists.txt

@@ -5,8 +5,8 @@ add_library(OCCTWrapper MODULE OCCTWrapper.cpp)
 
 set_target_properties(OCCTWrapper
     PROPERTIES
-    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/src"
+    LIBRARY_OUTPUT_DIRECTORY "${SLIC3R_RESOURCES_DIR}/plugins"
-    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/src"
+    RUNTIME_OUTPUT_DIRECTORY "${SLIC3R_RESOURCES_DIR}/plugins"
     PREFIX ""
 )