quiet -Wmissing-prototypes warnings, and enable this warning by default for C with gcc.

helps for finding unused functions and making functions static, also did some minor code cleanup.

1 files changed, 2 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_math_color.h b/source/blender/blenlib/BLI_math_color.h
index 7520f09fe95..6fe5d48d06e 100644
--- a/source/blender/blenlib/BLI_math_color.h
+++ b/source/blender/blenlib/BLI_math_color.h
@@ -67,6 +67,8 @@ void rgb_to_yuv(float r, float g, float b, float *ly, float *lu, float *lv);
 void rgb_to_ycc(float r, float g, float b, float *ly, float *lcb, float *lcr, int colorspace);
 void rgb_to_hsv(float r, float g, float b, float *lh, float *ls, float *lv);
 void rgb_to_hsv_v(const float rgb[3], float r_hsv[3]);
+void rgb_to_hsl(float r, float g, float b, float *lh, float *ls, float *ll);
+void rgb_to_hsl_v(const float rgb[3], float r_hsl[3]);
 void rgb_to_hsv_compat(float r, float g, float b, float *lh, float *ls, float *lv);
 void rgb_to_hsv_compat_v(const float rgb[3], float r_hsv[3]);
 void rgb_to_lab(float r, float g, float b, float *ll, float *la, float *lb);