build: fix the mingw cross compilation.

build/autotools/m4/lol-conf.m4

@@ -1,7 +1,7 @@
 dnl
 dnl  Lol Engine
 dnl
-dnl  Copyright © 2010—2017 Sam Hocevar <sam@hocevar.net>
+dnl  Copyright © 2010—2019 Sam Hocevar <sam@hocevar.net>
 dnl
 dnl  Lol Engine is free software. It comes without any warranty, to
 dnl  the extent permitted by applicable law. You can redistribute it
@@ -64,7 +64,6 @@ dnl
 dnl  Activate some header-only libraries
 dnl
 
-LOL_CFLAGS="$LOL_CFLAGS -I\$(lol_srcdir)/src/3rdparty/mingw-std-threads"
 LOL_CFLAGS="$LOL_CFLAGS -I\$(lol_srcdir)/src/3rdparty/pegtl/include"
 LOL_CFLAGS="$LOL_CFLAGS -I\$(lol_srcdir)/src/3rdparty/imgui"
 
@@ -168,6 +167,8 @@ AM_CONDITIONAL(LOL_USE_GDIPLUS, test "${ac_cv_my_have_gdiplus}" = "yes")
 dnl  Are we building using MinGW?
 LOL_TRY_CXXFLAGS(-mwindows -mwin32,
  [AM_CXXFLAGS="${AM_CXXFLAGS} -mwindows -mwin32"
+  LOL_CFLAGS="${LOL_CFLAGS} -I\$(lol_srcdir)/src/3rdparty/mingw-std-threads"
+  LOL_CFLAGS="${LOL_CFLAGS} -D__STDC_FORMAT_MACROS"
   LOL_LIBS="${LOL_LIBS} -uWinMain -u_WinMain@16"])
 
 

build/autotools/m4/lol-ffmpeg.m4

@@ -31,6 +31,7 @@ PKG_CHECK_MODULES([LIBAVCODEC], [libavcodec], [:], [ac_cv_my_have_ffmpeg=no])
 PKG_CHECK_MODULES([LIBAVUTIL], [libavutil], [:], [ac_cv_my_have_ffmpeg=no])
 PKG_CHECK_MODULES([LIBAVFORMAT], [libavformat], [:], [ac_cv_my_have_ffmpeg=no])
 PKG_CHECK_MODULES([LIBSWSCALE], [libswscale], [:], [ac_cv_my_have_ffmpeg=no])
+LOL_FFMPEG_EXTRA_LIBS=""
 if test "${ac_cv_my_have_ffmpeg}" != "yes"; then
   ac_cv_my_have_ffmpeg="yes"
   AC_CHECK_HEADERS(libavcodec/avcodec.h, [:], [ac_cv_my_have_ffmpeg=no])
@@ -41,13 +42,21 @@ if test "${ac_cv_my_have_ffmpeg}" != "yes"; then
     LIBAVUTIL_LIBS="-lavutil"
     LIBAVFORMAT_LIBS="-lavformat"
     LIBSWSCALE_LIBS="-lswscale"
-    AC_CHECK_LIB(ws2_32, main, LOL_LIBS="${LOL_LIBS} -lws2_32")
+    LIBSWRESAMPLE_LIBS="-lswresample"
+    dnl  Required by avformat/network.c
+    AC_CHECK_LIB(ws2_32, main, LOL_FFMPEG_EXTRA_LIBS="${LOL_FFMPEG_EXTRA_LIBS} -lws2_32")
+    dnl  Required by avformat/tls_schannel.c
+    AC_CHECK_LIB(secur32, main, LOL_FFMPEG_EXTRA_LIBS="${LOL_FFMPEG_EXTRA_LIBS} -lsecur32")
+    dnl  Required by avutil/random_seed.c
+    AC_CHECK_LIB(bcrypt, main, LOL_FFMPEG_EXTRA_LIBS="${LOL_FFMPEG_EXTRA_LIBS} -lbcrypt")
+    dnl  Required by avcodec/dxva2.c
+    AC_CHECK_LIB(ole32, main, LOL_FFMPEG_EXTRA_LIBS="${LOL_FFMPEG_EXTRA_LIBS} -lole32")
   fi
 fi
 if test "${ac_cv_my_have_ffmpeg}" = "yes"; then
   AC_DEFINE(LOL_USE_FFMPEG, 1, Define to 1 to use FFmpeg)
   LOL_CFLAGS="${LOL_CFLAGS} ${LIBAVFORMAT_CFLAGS} ${LIBAVUTIL_CFLAGS} ${LIBAVCODEC_CFLAGS} ${LIBSWSCALE_CFLAGS}"
-  LOL_LIBS="${LOL_LIBS} ${LIBAVFORMAT_LIBS} ${LIBAVUTIL_LIBS} ${LIBAVCODEC_LIBS} ${LIBSWSCALE_LIBS}"
+  LOL_LIBS="${LOL_LIBS} ${LIBAVFORMAT_LIBS} ${LIBAVCODEC_LIBS} ${LIBAVUTIL_LIBS} ${LIBSWSCALE_LIBS} ${LIBSWRESAMPLE_LIBS} ${LOL_FFMPEG_EXTRA_LIBS}"
 fi
 
 ]) # LOL_AC_CHECK_FFMPEG_INNER

build/lol-build

@@ -245,7 +245,7 @@ configure()
             CPPFLAGS="$CPPFLAGS -I$PWD/external/sdl-image-2.0.4/include"
             CPPFLAGS="$CPPFLAGS -I$PWD/external/sdl-mixer-2.0.4/include"
             CPPFLAGS="$CPPFLAGS -I$PWD/external/ffmpeg-20190130/include"
-            CPPFLAGS="$CPPFLAGS -I$PWD/external/glew-2.1.0/include/GL -DGLEW_STATIC"
+            CPPFLAGS="$CPPFLAGS -I$PWD/external/glew-2.1.0/include -DGLEW_STATIC"
             CPPFLAGS="$CPPFLAGS -I$PWD/external/gtk-2.22.1/lib/glib-2.0/include"
             CPPFLAGS="$CPPFLAGS -I$PWD/external/gtk-2.22.1/lib/gtk-2.0/include"
             CPPFLAGS="$CPPFLAGS -I$PWD/external/gtk-2.22.1/include/glib-2.0"

doc/samples/sandbox/sample.cpp

@@ -18,7 +18,7 @@
 
 using namespace lol;
 
-int main()
+int main(int, char **)
 {
     timer t;
 
@@ -38,5 +38,7 @@ int main()
     printf("%d %d\n", (int)x, (int)y);
 
     printf("Time: %f s\n", t.get());
+
+    return EXIT_SUCCESS;
 }
 

src/lol/base/features.h

@@ -177,6 +177,17 @@ namespace lol
 }
 
 
+//
+// Ensure CreateFile2() is available on Mingw
+//
+
+#if defined _WIN32 && !defined _MSC_VER && \
+              (!defined _WIN32_WINNT || _WIN32_WINNT < 0x0602)
+#   undef _WIN32_WINNT
+#   define _WIN32_WINNT 0x0602
+#endif
+
+
 /* XXX: workaround for X11 headers that try to #define these */
 #undef Always
 #define Always Always