diff --git a/examples/mini_calculator.v b/examples/mini_calculator.v
index bb97763d71..a9576cdb8d 100644
--- a/examples/mini_calculator.v
+++ b/examples/mini_calculator.v
@@ -131,4 +131,4 @@ fn main() {
 		}
 		println(res)
 	}
-}
\ No newline at end of file
+}
diff --git a/examples/tetris/tetris.v b/examples/tetris/tetris.v
index 11866ec203..8f3ba73f79 100644
--- a/examples/tetris/tetris.v
+++ b/examples/tetris/tetris.v
@@ -26,12 +26,12 @@ const (
 
 const (
 	text_cfg = gx.TextCfg{
-		align:gx.ALIGN_LEFT
+		align:gx.align_left
 		size:TextSize
 		color:gx.rgb(0, 0, 0)
 	}
 	over_cfg = gx.TextCfg{
-		align:gx.ALIGN_LEFT
+		align:gx.align_left
 		size:TextSize
 		color:gx.White
 	}
diff --git a/vlib/freetype/freetype.v b/vlib/freetype/freetype.v
index a6ec8f9081..11d137d52b 100644
--- a/vlib/freetype/freetype.v
+++ b/vlib/freetype/freetype.v
@@ -110,16 +110,16 @@ struct C.FT_Glyph_Metrics {
 }
 
 struct C.Glyph {
-	bitmap Bitmap
+	bitmap C.Bitmap
 	bitmap_left int
 	bitmap_top int
 	advance Advance
-	metrics FT_Glyph_Metrics
+	metrics C.FT_Glyph_Metrics
 }
 
 [typedef]
 struct C.FT_Face {
-	glyph &Glyph
+	glyph &C.Glyph
 	family_name charptr
 	style_name charptr
 }
@@ -193,7 +193,7 @@ pub fn new_context(cfg gg.Cfg) &FreeType {
 	projection := glm.ortho(0, width, 0, height)// 0 at BOT
 	shader.set_mat4('projection', projection)
 	// FREETYPE
-	ft := FT_Library{0}
+	ft := C.FT_Library{0}
 	// All functions return a value different than 0 whenever
 	// an error occurred
 	mut ret := C.FT_Init_FreeType(&ft)
@@ -386,7 +386,7 @@ pub fn (ctx mut FreeType) draw_text_def(x, y int, text string) {
 	cfg := gx.TextCfg {
 		color: gx.Black
 		size: default_font_size
-		align: gx.ALIGN_LEFT
+		align: gx.align_left
 	}
 	ctx.draw_text(x, y, text, cfg)
 }
@@ -451,9 +451,12 @@ pub fn (ctx mut FreeType) text_size(s string) (int, int) {
 	return scaled_x, scaled_y
 }
 
+/*
 pub fn (f FT_Face) str() string {
 	return 'FT_Face{ style_name: ${ptr_str(f.style_name)} family_name: ${ptr_str(f.family_name)} }'
 }
+*/
+
 pub fn (ac []Character) str() string {
 	mut res := []string
 	for c in ac {
diff --git a/vlib/gg2/gg.v b/vlib/gg2/gg.v
index 34347fdfa9..8190aa9fcc 100644
--- a/vlib/gg2/gg.v
+++ b/vlib/gg2/gg.v
@@ -120,7 +120,7 @@ pub fn (ctx &GG) draw_text_def(x, y int, text string) {
 	cfg := gx.TextCfg {
 		color: gx.Black
 		size: default_font_size
-		align: gx.ALIGN_LEFT
+		align: gx.align_left
 	}
 	ctx.draw_text(x, y, text, cfg)
 }
diff --git a/vlib/gl/gl.v b/vlib/gl/gl.v
index 395b58b8c9..a97be08071 100644
--- a/vlib/gl/gl.v
+++ b/vlib/gl/gl.v
@@ -11,6 +11,46 @@ module gl
 // joe-c: fix & remove
 pub enum TmpGlImportHack{ non_empty }
 
+fn C.glDisable()
+fn C.glEnable()
+fn C.glScissor()
+fn C.glVertexAttribPointer()
+fn C.glGenBuffers()
+fn C.glEnableVertexAttribArray()
+fn C.glGenVertexArrays()
+fn C.glDrawElements()
+fn C.glUseProgram()
+fn C.glDrawArrays()
+fn C.glBufferData()
+fn C.glGenerateMipmap()
+fn C.glTexParameteri()
+fn C.glDeleteTextures()
+fn C.glBindTexture()
+fn C.glActiveTexture()
+fn C.glGenTextures()
+fn C.glBindBuffer()
+fn C.glBindVertexArray()
+fn C.glGetProgramInfoLog()
+fn C.glGetShaderInfoLog()
+fn C.glDeleteShader()
+fn C.glGetProgramiv()
+fn C.glLinkProgram()
+fn C.glAttachShader()
+fn C.glGetShaderiv()
+fn C.glCompileShader()
+fn C.glShaderSource()
+fn C.glCreateProgram()
+fn C.glClear()
+fn C.glCreateShader()
+fn C.glClearColor()
+fn C.glViewport()
+fn C.gladLoadGL()
+fn C.glTexImage2D()
+fn C.glPixelStorei()
+fn C.glBlendFunc()
+
+
+
 pub fn init_glad() {
 	ok := C.gladLoadGL()
 	if isnil(ok) {
diff --git a/vlib/glfw/glfw.v b/vlib/glfw/glfw.v
index 1cf3f70d7a..6e3816ea96 100644
--- a/vlib/glfw/glfw.v
+++ b/vlib/glfw/glfw.v
@@ -51,6 +51,25 @@ pub const (
 	KeyDown  = 264
 )
 
+fn C.glfwGetWindowUserPointer() voidptr
+fn C.glfwGetPrimaryMonitor() voidptr
+fn C.glfwSetWindowUserPointer()
+fn C.glfwSetCursor()
+fn C.glfwGetCursorPos()
+fn C.glfwSetClipboardString()
+fn C.glfwGetWindowContentScale()
+fn C.glfwGetClipboardString()
+fn C.glfwGetKey()
+fn C.glfwGetTime()
+fn C.glfwSetCharModsCallback()
+fn C.glfwSetKeyCallback()
+fn C.glfwPostEmptyEvent()
+fn C.glfwSetScrollCallback()
+fn C.glfwSetWindowSizeCallback()
+fn C.glfwSetMouseButtonCallback()
+fn C.glfwSetCursorPosCallback()
+fn C.glfwSwapBuffers()
+
 // joe-c: fix & remove
 struct TmpGlImportHack {
 	hack gl.TmpGlImportHack
@@ -341,3 +360,4 @@ pub fn (size Size) str() string {
 pub fn get_window_user_pointer(gwnd voidptr) voidptr {
 	return C.glfwGetWindowUserPointer(gwnd)
 }
+
diff --git a/vlib/glm/glm.v b/vlib/glm/glm.v
index ac6dcc835f..86cab45c78 100644
--- a/vlib/glm/glm.v
+++ b/vlib/glm/glm.v
@@ -262,7 +262,7 @@ pub fn identity2(res mut &f32) {
 }
 
 pub fn identity3() []f32 {
-	res := [1.0, 0, 0, 0,
+	res := [f32(1.0), 0, 0, 0,
 	0, 1, 0, 0,
 	0, 0, 1, 0,
 	0, 0, 0, 1,
diff --git a/vlib/gx/gx.v b/vlib/gx/gx.v
index a28532d902..f770fadbe2 100644
--- a/vlib/gx/gx.v
+++ b/vlib/gx/gx.v
@@ -48,7 +48,7 @@ pub const (
 )
 
 pub const (
-	ALIGN_LEFT  = 1
+	align_left  = 1
 	ALIGN_RIGHT = 4
 )
 
diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 8ac086051d..721fbc31f4 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -11,7 +11,7 @@ import (
 )
 
 const (
-	max_nr_errors = 100
+	max_nr_errors = 300
 )
 
 pub struct Checker {
diff --git a/vlib/v/gen/cgen.v b/vlib/v/gen/cgen.v
index 20612056b0..88e75e2290 100644
--- a/vlib/v/gen/cgen.v
+++ b/vlib/v/gen/cgen.v
@@ -790,9 +790,9 @@ fn (g mut Gen) gen_fn_decl(it ast.FnDecl) {
 				g.writeln('free(_const_os__args.data); // empty, inited in _vinit()')
 			}
 			$if windows {
-				g.writeln('_const_os__args = os__init_os_args(argc, (byteptr*)argv);')
-			}	$else {
 				g.writeln('_const_os__args = os__init_os_args_wide(argc, (byteptr*)argv);')
+			}	$else {
+				g.writeln('_const_os__args = os__init_os_args(argc, (byteptr*)argv);')
 			}
 		}
 	}