diff --git a/.lgtm.yml b/.lgtm.yml
new file mode 100644
index 0000000..6bd850c
--- /dev/null
+++ b/.lgtm.yml
@@ -0,0 +1,12 @@
+extraction:
+  cpp:
+    prepare:
+      packages:
+      - "build-essential"
+      - "libxmu-dev"
+      - "libxi-dev"
+      - "libgl-dev"
+    index:
+      build_command:
+        - "cd auto; make all -j8; cd .."
+        - "make all -j8"
diff --git a/auto/src/glew_head.c b/auto/src/glew_head.c
index dbd18f2..832ded7 100644
--- a/auto/src/glew_head.c
+++ b/auto/src/glew_head.c
@@ -28,7 +28,7 @@
 #if defined(GLEW_EGL)
 #elif defined(GLEW_REGAL)
 
-/* In GLEW_REGAL mode we call direcly into the linked
+/* In GLEW_REGAL mode we call directly into the linked
    libRegal.so glGetProcAddressREGAL for looking up
    the GL function pointers. */
 
diff --git a/auto/src/glew_head.h b/auto/src/glew_head.h
index ad48840..cfa4007 100644
--- a/auto/src/glew_head.h
+++ b/auto/src/glew_head.h
@@ -2,7 +2,7 @@
 #define __glew_h__
 #define __GLEW_H__
 
-#if defined(__gl_h_) || defined(__GL_H__) || defined(_GL_H) || defined(__X_GL_H)
+#if defined(__gl_h_) || defined(__GL_H__) || defined(_GL_H) || defined(__gl_gl_h_) || defined(__X_GL_H)
 #error gl.h included before glew.h
 #endif
 #if defined(__gl2_h_)
@@ -25,6 +25,7 @@
 #define __gl2_h_
 #define __GL_H__
 #define _GL_H
+#define __gl_gl_h_
 #define __gltypes_h_
 #define __REGAL_H__
 #define __X_GL_H
diff --git a/auto/src/glew_init_egl.c b/auto/src/glew_init_egl.c
index 784285f..1502ef6 100644
--- a/auto/src/glew_init_egl.c
+++ b/auto/src/glew_init_egl.c
@@ -25,7 +25,7 @@ GLenum eglewInit (EGLDisplay display)
   if (!initialize || !queryString)
     return 1;
 
-  /* query EGK version */
+  /* query EGL version */
   if (initialize(display, &major, &minor) != EGL_TRUE)
     return 1;