progs/redbook: Silence compiler warnings.

1 files changed, 4 insertions, 4 deletions

diff --git a/progs/redbook/lines.c b/progs/redbook/lines.c
index b34d4c418c6..9f12da9acfe 100644
--- a/progs/redbook/lines.c
+++ b/progs/redbook/lines.c
@@ -46,13 +46,13 @@
 #define drawOneLine(x1,y1,x2,y2)  glBegin(GL_LINES);  \
    glVertex2f ((x1),(y1)); glVertex2f ((x2),(y2)); glEnd();
 
-void init(void) 
+static void init(void) 
 {
    glClearColor (0.0, 0.0, 0.0, 0.0);
    glShadeModel (GL_FLAT);
 }
 
-void display(void)
+static void display(void)
 {
    int i;
 
@@ -104,7 +104,7 @@ void display(void)
    glFlush ();
 }
 
-void reshape (int w, int h)
+static void reshape (int w, int h)
 {
    glViewport (0, 0, (GLsizei) w, (GLsizei) h);
    glMatrixMode (GL_PROJECTION);
@@ -113,7 +113,7 @@ void reshape (int w, int h)
 }
 
 /* ARGSUSED1 */
-void keyboard(unsigned char key, int x, int y)
+static void keyboard(unsigned char key, int x, int y)
 {
    switch (key) {
       case 27: