Add CMake and Windows support

CMakeLists.txt

@@ -0,0 +1,44 @@
+cmake_minimum_required(VERSION 3.22)
+
+project(simple-whep-client VERSION 1.0 LANGUAGES C)
+
+find_package(PkgConfig REQUIRED)
+
+pkg_check_modules(
+    GSTREAMER
+    REQUIRED
+    IMPORTED_TARGET
+    gstreamer-1.0>=1.16
+    gstreamer-webrtc-1.0>=1.16
+    gstreamer-sdp-1.0>=1.16
+    gstreamer-video-1.0
+)
+
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(SOUP REQUIRED IMPORTED_TARGET libsoup-3.0)
+
+add_executable(whep-client src/whep-client.c)
+
+target_compile_features(whep-client PRIVATE c_std_99)
+target_compile_options(
+    whep-client
+    PRIVATE
+        -Wall
+        -Wstrict-prototypes
+        -Wmissing-prototypes
+        -Wmissing-declarations
+        -Wunused
+)
+
+target_link_libraries(
+    whep-client
+    PRIVATE PkgConfig::GSTREAMER PkgConfig::GLIB PkgConfig::SOUP
+)
+
+if(WIN32)
+    target_compile_definitions(whep-client PRIVATE _WIN32_WINNT=0x0601)
+    target_link_libraries(whep-client PRIVATE ws2_32)
+endif()
+
+include(GNUInstallDirs)
+install(TARGETS whep-client RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})

src/debug.h

@@ -68,6 +68,14 @@ static const char *whep_name_prefix[] = {
 	ANSI_COLOR_CYAN"[WHEP]"ANSI_COLOR_RESET" "
 };
 
+#if defined(_WIN32)
+static inline struct tm *
+localtime_r(const time_t *restrict t, struct tm *restrict r)
+{
+	return (localtime_s(r, t) == 0) ? r : NULL;
+}
+#endif
+
 /* Simple wrapper to g_print/printf */
 #define WHEP_PRINT g_print
 /* Logger based on different levels, which can either be displayed