port to NetBSD

The NetBSD port will only work after
epezent/implot#565 is merged and Dolphin updates
to a version with the fix. In the meantime, you can apply the fix
yourself to a Dolphin checkout.

Author: guijan

CMakeLists.txt

@@ -375,7 +375,6 @@ if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
   find_library(FOUNDATION_LIBRARY Foundation)
   find_library(IOB_LIBRARY IOBluetooth)
   find_library(IOK_LIBRARY IOKit)
-  find_library(OPENGL_LIBRARY OpenGL)
 endif()
 
 if(ENABLE_LTO)
@@ -518,9 +517,26 @@ if(ENABLE_X11)
   endif()
 endif()
 
+set(OpenGL_GL_PREFERENCE GLVND CACHE STRING "Linux-only: if GLVND, use the vendor-neutral GL libraries (default). If LEGACY, use the legacy ones (might be necessary to have optirun/primusrun work)")
+set_property(CACHE OpenGL_GL_PREFERENCE PROPERTY STRINGS GLVND LEGACY)
+find_package(OpenGL)
+if(OPENGL_GL_FOUND)
+  add_definitions(-DHAS_OPENGL)
+endif()
 if(ENABLE_EGL)
-  find_package(EGL)
+  # `find_package(OpenGL OPTIONAL_COMPONENTS EGL)` is broken, the package fails
+  # to find OpenGL and all the components if we specify any components; it
+  # also breaks anyone who depends on a previously successful
+  # `find_package(OpenGL)` call, so we don't use it.
+
+  pkg_check_modules(EGL egl IMPORTED_TARGET)
   if(EGL_FOUND)
+    add_library(EGL::EGL ALIAS PkgConfig::EGL)
+  else()
+    # https://code.qt.io/cgit/qt/qtbase.git/tree/cmake/3rdparty/extra-cmake-modules/find-modules/FindEGL.cmake?h=6.7.0
+    find_package(EGL)
+  endif()
+  if(TARGET EGL::EGL)
     add_definitions(-DHAVE_EGL=1)
     message(STATUS "EGL OpenGL interface enabled")
   else()
@@ -653,11 +669,6 @@ if(ENABLE_VULKAN)
   endif()
 endif()
 
-if(NOT WIN32 OR (NOT (CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64")))
-  # OpenGL is available on all platforms except windows-arm64
-  add_definitions(-DHAS_OPENGL)
-endif()
-
 dolphin_find_optional_system_library(pugixml Externals/pugixml)
 
 dolphin_find_optional_system_library_pkgconfig(ENET libenet>=1.3.18 enet::enet Externals/enet)
@@ -703,7 +714,9 @@ include_directories(Externals/soundtouch)
 dolphin_find_optional_system_library(CUBEB Externals/cubeb)
 
 if(NOT ANDROID)
-  dolphin_find_optional_system_library(LibUSB Externals/libusb)
+  dolphin_find_optional_system_library_pkgconfig(
+    LibUSB libusb-1.0 LibUSB::LibUSB Externals/libusb
+  )
   add_definitions(-D__LIBUSB__)
 endif()
 

Externals/hidapi/CMakeLists.txt

@@ -15,7 +15,7 @@ else()
     target_link_libraries(hidapi PRIVATE udev)
   else()
     target_sources(hidapi PRIVATE hidapi-src/libusb/hid.c)
-    target_link_libraries(hidapi PRIVATE ${LIBUSB_LIBRARIES})
+    target_link_libraries(hidapi PRIVATE LibUSB::LibUSB)
   endif()
 endif()
 

Source/Core/Common/CMakeLists.txt

@@ -262,7 +262,7 @@ target_sources(common PRIVATE
   GL/GLExtensions/GLExtensions.h
 )
 
-if(ENABLE_EGL AND EGL_FOUND)
+if(EGL_FOUND)
   target_sources(common PRIVATE
     GL/GLInterface/EGL.cpp
     GL/GLInterface/EGL.h
@@ -272,14 +272,13 @@ if(ENABLE_EGL AND EGL_FOUND)
       GL/GLInterface/EGLAndroid.cpp
       GL/GLInterface/EGLAndroid.h
     )
-  elseif(ENABLE_X11 AND X11_FOUND)
+  elseif(X11_FOUND)
     target_sources(common PRIVATE
       GL/GLInterface/EGLX11.cpp
       GL/GLInterface/EGLX11.h
     )
   endif()
-  target_include_directories(common PRIVATE ${EGL_INCLUDE_DIRS})
-  target_link_libraries(common PUBLIC ${EGL_LIBRARIES})
+  target_link_libraries(common PUBLIC OpenGL::GL EGL::EGL)
 endif()
 
 if(WIN32)
@@ -299,7 +298,7 @@ elseif(HAIKU)
     GL/GLInterface/BGL.h
     GL/GLInterface/BGL.cpp
   )
-elseif(ENABLE_X11 AND X11_FOUND)
+elseif(X11_FOUND)
   target_sources(common PRIVATE
     GL/GLX11Window.cpp
     GL/GLX11Window.h
@@ -309,7 +308,7 @@ elseif(ENABLE_X11 AND X11_FOUND)
 
   # GLX has a hard dependency on libGL.
   # Make sure to link to it if using GLX.
-  target_link_libraries(common PUBLIC ${OPENGL_LIBRARIES})
+  target_link_libraries(common PUBLIC OpenGL::GL)
 endif()
 
 if(CMAKE_SYSTEM_NAME STREQUAL "Linux")

Source/Core/Common/StringUtil.cpp

@@ -35,9 +35,6 @@
 constexpr u32 CODEPAGE_SHIFT_JIS = 932;
 constexpr u32 CODEPAGE_WINDOWS_1252 = 1252;
 #else
-#if defined(__NetBSD__)
-#define LIBICONV_PLUG
-#endif
 #include <errno.h>
 #include <iconv.h>
 #include <locale.h>
@@ -528,13 +525,8 @@ std::string CodeTo(const char* tocode, const char* fromcode, std::basic_string_v
     while (src_bytes != 0)
     {
       size_t const iconv_result =
-#if defined(__NetBSD__)
-          iconv(conv_desc, reinterpret_cast<const char**>(&src_buffer), &src_bytes, &dst_buffer,
-                &dst_bytes);
-#else
           iconv(conv_desc, const_cast<char**>(reinterpret_cast<const char**>(&src_buffer)),
                 &src_bytes, &dst_buffer, &dst_bytes);
-#endif
       if ((size_t)-1 == iconv_result)
       {
         if (EILSEQ == errno || EINVAL == errno)

Source/Core/Core/PowerPC/Expression.cpp

@@ -11,6 +11,16 @@
 #include <string_view>
 #include <utility>
 
+// https://github.com/zserge/expr/ is a C program and sorta valid C++.
+// When included in a C++ program, it's treated as a C++ code, and it may cause
+// issues: <cmath> may already be included, if so, including <math.h> may
+// not do anything. <math.h> is obligated to put its functions in the global
+// namespace, while <cmath> may or may not. The C code we're interpreting as
+// C++ won't call functions by their qualified names. The code may work anyway
+// if <cmath> puts its functions in the global namespace, or if the functions
+// are actually macros that expand inline, both of which are common.
+// NetBSD 10.0 i386 is an exception, and we need `using` there.
+using std::isnan; using std::isinf;
 #include <expr.h>
 
 #include "Common/BitUtils.h"