python: fix Clang's -Wmissing-prototypes warnings.

This is a temporary change until a PR fixing this on pybind11 side is
merged (and a new version released).

src/python/corrade/containers.cpp

@@ -634,6 +634,9 @@ void containers(py::module& m) {
 }
 
 #ifndef CORRADE_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_containers();
 PYBIND11_MODULE(containers, m) {
     corrade::containers(m);
 }

src/python/magnum/gl.cpp

@@ -475,6 +475,9 @@ void gl(py::module& m) {
 }
 
 #ifndef MAGNUM_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_gl();
 PYBIND11_MODULE(gl, m) {
     magnum::gl(m);
 }

src/python/magnum/magnum.cpp

@@ -214,6 +214,9 @@ void magnum(py::module& m) {
 
 }}
 
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit__magnum();
 PYBIND11_MODULE(_magnum, m) {
     /* We need ArrayView for images */
     py::module::import("corrade.containers");

src/python/magnum/meshtools.cpp

@@ -62,6 +62,9 @@ void meshtools(py::module& m) {
 }
 
 #ifndef MAGNUM_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_meshtools();
 PYBIND11_MODULE(meshtools, m) {
     magnum::meshtools(m);
 }

src/python/magnum/platform/egl.cpp

@@ -58,6 +58,9 @@ void egl(py::module& m) {
 }}
 
 #ifndef MAGNUM_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_egl();
 PYBIND11_MODULE(egl, m) {
     magnum::platform::egl(m);
 }

src/python/magnum/platform/glfw.cpp

@@ -110,6 +110,9 @@ void glfw(py::module& m) {
 }}
 
 #ifndef MAGNUM_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_glfw();
 PYBIND11_MODULE(glfw, m) {
     magnum::platform::glfw(m);
 }

src/python/magnum/platform/glx.cpp

@@ -58,6 +58,9 @@ void glx(py::module& m) {
 }}
 
 #ifndef MAGNUM_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_glx();
 PYBIND11_MODULE(glx, m) {
     magnum::platform::glx(m);
 }

src/python/magnum/platform/sdl2.cpp

@@ -118,6 +118,9 @@ void sdl2(py::module& m) {
 }}
 
 #ifndef MAGNUM_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_sdl2();
 PYBIND11_MODULE(sdl2, m) {
     magnum::platform::sdl2(m);
 }

src/python/magnum/primitives.cpp

@@ -58,6 +58,9 @@ void primitives(py::module& m) {
 }
 
 #ifndef MAGNUM_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_primitives();
 PYBIND11_MODULE(primitives, m) {
     magnum::primitives(m);
 }

src/python/magnum/scenegraph.cpp

@@ -176,6 +176,9 @@ void scenegraph(py::module& m) {
 }
 
 #ifndef MAGNUM_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_scenegraph();
 PYBIND11_MODULE(scenegraph, m) {
     magnum::scenegraph(m);
 }

src/python/magnum/shaders.cpp

@@ -153,6 +153,9 @@ void shaders(py::module& m) {
 }
 
 #ifndef MAGNUM_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_shaders();
 PYBIND11_MODULE(shaders, m) {
     magnum::shaders(m);
 }

src/python/magnum/trade.cpp

@@ -53,6 +53,9 @@ void trade(py::module& m) {
 }
 
 #ifndef MAGNUM_BUILD_STATIC
+/* TODO: remove declaration when https://github.com/pybind/pybind11/pull/1863
+   is released */
+extern "C" PyObject* PyInit_trade();
 PYBIND11_MODULE(trade, m) {
     magnum::trade(m);
 }