diff --git a/source/blender/blenfont/intern/blf_dir.c b/source/blender/blenfont/intern/blf_dir.c
index 857ead0b7cd..fd874d991ea 100644
--- a/source/blender/blenfont/intern/blf_dir.c
+++ b/source/blender/blenfont/intern/blf_dir.c
@@ -51,6 +51,7 @@
 
 #include "BLF_api.h"
 #include "blf_internal_types.h"
+#include "blf_internal.h"
 
 static ListBase global_font_dir= { NULL, NULL };
 
@@ -150,6 +151,7 @@ char *blf_dir_search(const char *file)
 	return(s);
 }
 
+#if 0 // UNUSED
 int blf_dir_split(const char *str, char *file, int *size)
 {
 	int i, len;
@@ -173,6 +175,7 @@ int blf_dir_split(const char *str, char *file, int *size)
 	}
 	return(0);
 }
+#endif
 
 /* Some font have additional file with metrics information,
  * in general, the extension of the file is: .afm or .pfm
diff --git a/source/blender/blenfont/intern/blf_internal.h b/source/blender/blenfont/intern/blf_internal.h
index 34df8d72103..9271d8d5a9e 100644
--- a/source/blender/blenfont/intern/blf_internal.h
+++ b/source/blender/blenfont/intern/blf_internal.h
@@ -44,7 +44,7 @@ int blf_utf8_next(unsigned char *buf, int *iindex);
 
 char *blf_dir_search(const char *file);
 char *blf_dir_metrics_search(const char *filename);
-int blf_dir_split(const char *str, char *file, int *size);
+// int blf_dir_split(const char *str, char *file, int *size); // UNUSED
 
 int blf_font_init(void);
 void blf_font_exit(void);
diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c
index cbe0a959f15..02eb3aa540e 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -1913,9 +1913,10 @@ static void give_parvert(Object *par, int nr, float *vec)
 		if(dm) {
 			MVert *mvert= dm->getVertArray(dm);
 			int *index = (int *)dm->getVertDataArray(dm, CD_ORIGINDEX);
-			int i, count = 0, vindex, numVerts = dm->getNumVerts(dm);
+			int i, vindex, numVerts = dm->getNumVerts(dm);
 
 			/* get the average of all verts with (original index == nr) */
+			count= 0;
 			for(i = 0; i < numVerts; i++) {
 				vindex= (index)? index[i]: i;
 
diff --git a/source/blender/editors/screen/screen_ops.c b/source/blender/editors/screen/screen_ops.c
index e2d7147d21f..02fae52219b 100644
--- a/source/blender/editors/screen/screen_ops.c
+++ b/source/blender/editors/screen/screen_ops.c
@@ -110,7 +110,7 @@ int ED_operator_screenactive(bContext *C)
 }
 
 /* XXX added this to prevent anim state to change during renders */
-int ED_operator_screenactive_norender(bContext *C)
+static int ED_operator_screenactive_norender(bContext *C)
 {
 	if(G.rendering) return 0;
 	if(CTX_wm_window(C)==NULL) return 0;
diff --git a/source/blender/editors/space_nla/nla_select.c b/source/blender/editors/space_nla/nla_select.c
index d75c1aa7dd3..188042ad1d1 100644
--- a/source/blender/editors/space_nla/nla_select.c
+++ b/source/blender/editors/space_nla/nla_select.c
@@ -612,7 +612,7 @@ static int nlaedit_clickselect_invoke(bContext *C, wmOperator *op, wmEvent *even
 	bAnimContext ac;
 	Scene *scene;
 	ARegion *ar;
-	View2D *v2d;
+	// View2D *v2d; /*UNUSED*/
 	short selectmode;
 	int mval[2];
 	
@@ -623,7 +623,7 @@ static int nlaedit_clickselect_invoke(bContext *C, wmOperator *op, wmEvent *even
 	/* get useful pointers from animation context data */
 	scene= ac.scene;
 	ar= ac.ar;
-	v2d= &ar->v2d;
+	// v2d= &ar->v2d;
 	
 	/* get mouse coordinates (in region coordinates) */
 	mval[0]= (event->x - ar->winrct.xmin);
diff --git a/source/blender/editors/uvedit/uvedit_ops.c b/source/blender/editors/uvedit/uvedit_ops.c
index eee7a3d7f69..20d7ea21d5c 100644
--- a/source/blender/editors/uvedit/uvedit_ops.c
+++ b/source/blender/editors/uvedit/uvedit_ops.c
@@ -419,7 +419,7 @@ int ED_uvedit_minmax(Scene *scene, Image *ima, Object *obedit, float *min, float
 	return sel;
 }
 
-int ED_uvedit_median(Scene *scene, Image *ima, Object *obedit, float co[3])
+static int ED_uvedit_median(Scene *scene, Image *ima, Object *obedit, float co[3])
 {
 	EditMesh *em= BKE_mesh_get_editmesh((Mesh*)obedit->data);
 	EditFace *efa;
diff --git a/source/blender/imbuf/intern/cineon/cineon_dpx.c b/source/blender/imbuf/intern/cineon/cineon_dpx.c
index 504817b263f..8df2a9f6985 100644
--- a/source/blender/imbuf/intern/cineon/cineon_dpx.c
+++ b/source/blender/imbuf/intern/cineon/cineon_dpx.c
@@ -44,6 +44,7 @@
 
 #include "IMB_imbuf_types.h"
 #include "IMB_imbuf.h"
+#include "IMB_filetype.h"
 
 #include "BKE_global.h"
 
@@ -192,7 +193,7 @@ static int imb_save_dpx_cineon(ImBuf *ibuf, const char *filename, int use_cineon
 	return 1;
 }
 
-short imb_savecineon(struct ImBuf *buf, const char *myfile, int flags)
+int imb_savecineon(struct ImBuf *buf, const char *myfile, int flags)
 {
 	return imb_save_dpx_cineon(buf, myfile, 1, flags);
 }
@@ -203,14 +204,14 @@ int imb_is_cineon(unsigned char *buf)
 	return cineonIsMemFileCineon(buf);
 }
 
-ImBuf *imb_loadcineon(unsigned char *mem, int size, int flags)
+ImBuf *imb_loadcineon(unsigned char *mem, size_t size, int flags)
 {
 	if(imb_is_cineon(mem))
 		return imb_load_dpx_cineon(mem, 1, size, flags);
 	return NULL;
 }
 
-short imb_save_dpx(struct ImBuf *buf, const char *myfile, int flags)
+int imb_save_dpx(struct ImBuf *buf, const char *myfile, int flags)
 {
 	return imb_save_dpx_cineon(buf, myfile, 0, flags);
 }
@@ -220,7 +221,7 @@ int imb_is_dpx(unsigned char *buf)
 	return dpxIsMemFileCineon(buf);
 }
 
-ImBuf *imb_loaddpx(unsigned char *mem, int size, int flags)
+ImBuf *imb_loaddpx(unsigned char *mem, size_t size, int flags)
 {
 	if(imb_is_dpx(mem))
 		return imb_load_dpx_cineon(mem, 0, size, flags);
diff --git a/source/blender/imbuf/intern/cineon/cineonfile.h b/source/blender/imbuf/intern/cineon/cineonfile.h
index 31aa56f560c..896e0af65b3 100644
--- a/source/blender/imbuf/intern/cineon/cineonfile.h
+++ b/source/blender/imbuf/intern/cineon/cineonfile.h
@@ -126,19 +126,6 @@ typedef struct {
 	ASCII reserved[740];
 } CineonMPISpecificInformation;
 
-#if 0
-/* create CineonFile from data in header */
-/* return 0 for OK */
-int readCineonGenericHeader(CineonFile* cineon, CineonGenericHeader* header);
-
-/* create header from data in CineonFile */
-int initCineonGenericHeader(
-	CineonFile* cineon, CineonGenericHeader* header, const char* imagename);
-
-/* Note: dump routine assumes network byte order */
-void dumpCineonGenericHeader(CineonGenericHeader* header);
-#endif
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/blender/imbuf/intern/cineon/cineonlib.c b/source/blender/imbuf/intern/cineon/cineonlib.c
index fdcd3491af1..922cfcf9629 100644
--- a/source/blender/imbuf/intern/cineon/cineonlib.c
+++ b/source/blender/imbuf/intern/cineon/cineonlib.c
@@ -276,7 +276,7 @@ dumpCineonOriginationInfo(CineonOriginationInformation* originInfo) {
 	d_printf("Input device gamma %f\n", ntohf(originInfo->input_device_gamma));
 }
 
-int
+static int
 initCineonGenericHeader(CineonFile* cineon, CineonGenericHeader* header, const char* imagename) {
 
 	fillCineonFileInfo(cineon, &header->fileInfo, imagename);
@@ -287,7 +287,7 @@ initCineonGenericHeader(CineonFile* cineon, CineonGenericHeader* header, const c
 	return 0;
 }
 
-void
+static void
 dumpCineonGenericHeader(CineonGenericHeader* header) {
 	dumpCineonFileInfo(&header->fileInfo);
 	dumpCineonImageInfo(&header->imageInfo);
diff --git a/source/blender/imbuf/intern/cineon/logmemfile.c b/source/blender/imbuf/intern/cineon/logmemfile.c
index 6347eb5fdf9..d3a32774efd 100644
--- a/source/blender/imbuf/intern/cineon/logmemfile.c
+++ b/source/blender/imbuf/intern/cineon/logmemfile.c
@@ -27,6 +27,8 @@
 
 #include "logImageCore.h"
 
+#include "logmemfile.h" /* own include */
+
 int logimage_fseek(void* logfile, intptr_t offsett, int origin)
 {	
 	struct _Log_Image_File_t_ *file = (struct _Log_Image_File_t_*) logfile;
diff --git a/source/blender/python/intern/bpy_library.c b/source/blender/python/intern/bpy_library.c
index 4291fc824e9..b66b2109329 100644
--- a/source/blender/python/intern/bpy_library.c
+++ b/source/blender/python/intern/bpy_library.c
@@ -76,7 +76,7 @@ static void bpy_lib_dealloc(BPy_Library *self)
 }
 
 
-PyTypeObject bpy_lib_Type= {
+static PyTypeObject bpy_lib_Type= {
 	PyVarObject_HEAD_INIT(NULL, 0)
 	"bpy_lib",		/* tp_name */
 	sizeof(BPy_Library),			/* tp_basicsize */
diff --git a/source/blender/render/intern/include/shading.h b/source/blender/render/intern/include/shading.h
index 865cb056a61..07d24ea6d66 100644
--- a/source/blender/render/intern/include/shading.h
+++ b/source/blender/render/intern/include/shading.h
@@ -37,7 +37,7 @@ struct LampRen;
 struct VlakRen;
 struct StrandSegment;
 struct StrandPoint;
-struct ObjectInstanceRen obi;
+struct ObjectInstanceRen;
 struct Isect;
 
 /* shadeinput.c */
diff --git a/source/blender/render/intern/source/rayshade.c b/source/blender/render/intern/source/rayshade.c
index 74ec52c5dbf..e8f66cf18ef 100644
--- a/source/blender/render/intern/source/rayshade.c
+++ b/source/blender/render/intern/source/rayshade.c
@@ -96,7 +96,7 @@ static void RE_rayobject_config_control(RayObject *r, Render *re)
 	}
 }
 
-RayObject*  RE_rayobject_create(Render *re, int type, int size)
+static RayObject*  RE_rayobject_create(Render *re, int type, int size)
 {
 	RayObject * res = NULL;
 
@@ -1679,7 +1679,7 @@ static void ray_trace_shadow_tra(Isect *is, ShadeInput *origshi, int depth, int
 
 /* not used, test function for ambient occlusion (yaf: pathlight) */
 /* main problem; has to be called within shading loop, giving unwanted recursion */
-int ray_trace_shadow_rad(ShadeInput *ship, ShadeResult *shr)
+static int ray_trace_shadow_rad(ShadeInput *ship, ShadeResult *shr)
 {
 	static int counter=0, only_one= 0;
 	extern float hashvectf[];
diff --git a/source/blender/render/intern/source/renderdatabase.c b/source/blender/render/intern/source/renderdatabase.c
index 74c99d1a92f..afe4d5c7e35 100644
--- a/source/blender/render/intern/source/renderdatabase.c
+++ b/source/blender/render/intern/source/renderdatabase.c
@@ -782,7 +782,7 @@ void free_renderdata_vlaknodes(VlakTableNode *vlaknodes)
 	MEM_freeN(vlaknodes);
 }
 
-void free_renderdata_strandnodes(StrandTableNode *strandnodes)
+static void free_renderdata_strandnodes(StrandTableNode *strandnodes)
 {
 	int a;
 	
diff --git a/source/blender/render/intern/source/strand.c b/source/blender/render/intern/source/strand.c
index 12e85af7575..9f5c2c39472 100644
--- a/source/blender/render/intern/source/strand.c
+++ b/source/blender/render/intern/source/strand.c
@@ -210,7 +210,7 @@ static void interpolate_vec4(float *v1, float *v2, float t, float negt, float *v
 	v[3]= negt*v1[3] + t*v2[3];
 }
 
-void interpolate_shade_result(ShadeResult *shr1, ShadeResult *shr2, float t, ShadeResult *shr, int addpassflag)
+static void interpolate_shade_result(ShadeResult *shr1, ShadeResult *shr2, float t, ShadeResult *shr, int addpassflag)
 {
 	float negt= 1.0f - t;
 
@@ -252,7 +252,7 @@ void interpolate_shade_result(ShadeResult *shr1, ShadeResult *shr2, float t, Sha
 	}
 }
 
-void strand_apply_shaderesult_alpha(ShadeResult *shr, float alpha)
+static void strand_apply_shaderesult_alpha(ShadeResult *shr, float alpha)
 {
 	if(alpha < 1.0f) {
 		shr->combined[0] *= alpha;
diff --git a/source/blender/render/intern/source/sunsky.c b/source/blender/render/intern/source/sunsky.c
index 919c06d81f7..f645c29a7a5 100644
--- a/source/blender/render/intern/source/sunsky.c
+++ b/source/blender/render/intern/source/sunsky.c
@@ -113,7 +113,7 @@ static void DirectionToThetaPhi(float *toSun, float *theta, float *phi)
  * PerezFunction:
  * compute perez function value based on input paramters
  * */
-float PerezFunction(struct SunSky *sunsky, const float *lam, float theta, float gamma, float lvz)
+static float PerezFunction(struct SunSky *sunsky, const float *lam, float theta, float gamma, float lvz)
 {
 	float den, num;
 	
@@ -313,7 +313,7 @@ void GetSkyXYZRadiancef(struct SunSky* sunsky, const float varg[3], float color_
  * turbidity: is atmosphere turbidity
  * fTau: contains computed attenuated sun light
  * */
-void ComputeAttenuatedSunlight(float theta, int turbidity, float fTau[3])
+static void ComputeAttenuatedSunlight(float theta, int turbidity, float fTau[3])
 {
 	float fBeta ;
 	float fTauR, fTauA;
diff --git a/source/blender/render/intern/source/volume_precache.c b/source/blender/render/intern/source/volume_precache.c
index fc3280db771..8293143a2a6 100644
--- a/source/blender/render/intern/source/volume_precache.c
+++ b/source/blender/render/intern/source/volume_precache.c
@@ -74,7 +74,7 @@ extern struct Render R;
 
 /* Recursive test for intersections, from a point inside the mesh, to outside
  * Number of intersections (depth) determine if a point is inside or outside the mesh */
-int intersect_outside_volume(RayObject *tree, Isect *isect, float *offset, int limit, int depth)
+static int intersect_outside_volume(RayObject *tree, Isect *isect, float *offset, int limit, int depth)
 {
 	if (limit == 0) return depth;
 	
@@ -96,7 +96,7 @@ int intersect_outside_volume(RayObject *tree, Isect *isect, float *offset, int l
 }
 
 /* Uses ray tracing to check if a point is inside or outside an ObjectInstanceRen */
-int point_inside_obi(RayObject *tree, ObjectInstanceRen *UNUSED(obi), float *co)
+static int point_inside_obi(RayObject *tree, ObjectInstanceRen *UNUSED(obi), float *co)
 {
 	Isect isect= {{0}};
 	float dir[3] = {0.0f,0.0f,1.0f};
@@ -350,7 +350,7 @@ static void ms_diffuse(float *x0, float *x, float diff, int *n) //n is the unpad
 	}
 }
 
-void multiple_scattering_diffusion(Render *re, VolumePrecache *vp, Material *ma)
+static void multiple_scattering_diffusion(Render *re, VolumePrecache *vp, Material *ma)
 {
 	const float diff = ma->vol.ms_diff * 0.001f; 	/* compensate for scaling for a nicer UI range */
 	const int simframes = (int)(ma->vol.ms_spread * (float)MAX3(vp->res[0], vp->res[1], vp->res[2]));
@@ -538,7 +538,7 @@ static void *vol_precache_part(void *data)
 	
 	pa->done = 1;
 	
-	return 0;
+	return NULL;
 }
 
 
@@ -676,7 +676,7 @@ static int precache_resolution(Render *re, VolumePrecache *vp, ObjectInstanceRen
  * in camera space, aligned with the ObjectRen's bounding box.
  * Resolution is defined by the user.
  */
-void vol_precache_objectinstance_threads(Render *re, ObjectInstanceRen *obi, Material *ma)
+static void vol_precache_objectinstance_threads(Render *re, ObjectInstanceRen *obi, Material *ma)
 {
 	VolumePrecache *vp;
 	VolPrecachePart *nextpa, *pa;
@@ -709,9 +709,8 @@ void vol_precache_objectinstance_threads(Render *re, ObjectInstanceRen *obi, Mat
 	vp->data_r = MEM_callocN(sizeof(float)*vp->res[0]*vp->res[1]*vp->res[2], "volume light cache data red channel");
 	vp->data_g = MEM_callocN(sizeof(float)*vp->res[0]*vp->res[1]*vp->res[2], "volume light cache data green channel");
 	vp->data_b = MEM_callocN(sizeof(float)*vp->res[0]*vp->res[1]*vp->res[2], "volume light cache data blue channel");
-	if (vp->data_r==0 || vp->data_g==0 || vp->data_b==0) {
+	if (vp->data_r==NULL || vp->data_g==NULL || vp->data_b==NULL) {
 		MEM_freeN(vp);
-		vp = NULL;
 		return;
 	}
 
diff --git a/source/blender/render/intern/source/volumetric.c b/source/blender/render/intern/source/volumetric.c
index dde9dbb8485..09422af7c79 100644
--- a/source/blender/render/intern/source/volumetric.c
+++ b/source/blender/render/intern/source/volumetric.c
@@ -305,7 +305,7 @@ float vol_get_density(struct ShadeInput *shi, float *co)
 /* Color of light that gets scattered out by the volume */
 /* Uses same physically based scattering parameter as in transmission calculations, 
  * along with artificial reflection scale/reflection color tint */
-void vol_get_reflection_color(ShadeInput *shi, float *ref_col, float *co)
+static void vol_get_reflection_color(ShadeInput *shi, float *ref_col, float *co)
 {
 	float scatter = shi->mat->vol.scattering;
 	float reflection= shi->mat->vol.reflection;
@@ -325,7 +325,7 @@ void vol_get_reflection_color(ShadeInput *shi, float *ref_col, float *co)
 
 /* compute emission component, amount of radiance to add per segment
  * can be textured with 'emit' */
-void vol_get_emission(ShadeInput *shi, float *emission_col, float *co)
+static void vol_get_emission(ShadeInput *shi, float *emission_col, float *co)
 {
 	float emission = shi->mat->vol.emission;
 	VECCOPY(emission_col, shi->mat->vol.emission_col);
@@ -343,7 +343,7 @@ void vol_get_emission(ShadeInput *shi, float *emission_col, float *co)
  * This can possibly use a specific scattering color, 
  * and absorption multiplier factor too, but these parameters are left out for simplicity.
  * It's easy enough to get a good wide range of results with just these two parameters. */
-void vol_get_sigma_t(ShadeInput *shi, float *sigma_t, float *co)
+static void vol_get_sigma_t(ShadeInput *shi, float *sigma_t, float *co)
 {
 	/* technically absorption, but named transmission color 
 	 * since it describes the effect of the coloring *after* absorption */
@@ -361,7 +361,7 @@ void vol_get_sigma_t(ShadeInput *shi, float *sigma_t, float *co)
 /* phase function - determines in which directions the light 
  * is scattered in the volume relative to incoming direction 
  * and view direction */
-float vol_get_phasefunc(ShadeInput *UNUSED(shi), float g, float *w, float *wp)
+static float vol_get_phasefunc(ShadeInput *UNUSED(shi), float g, float *w, float *wp)
 {
 	const float normalize = 0.25f; // = 1.f/4.f = M_PI/(4.f*M_PI)
 	
@@ -408,7 +408,7 @@ float vol_get_phasefunc(ShadeInput *UNUSED(shi), float g, float *w, float *wp)
 }
 
 /* Compute transmittance = e^(-attenuation) */
-void vol_get_transmittance_seg(ShadeInput *shi, float *tr, float stepsize, float *co, float density)
+static void vol_get_transmittance_seg(ShadeInput *shi, float *tr, float stepsize, float *co, float density)
 {
 	/* input density = density at co */
 	float tau[3] = {0.f, 0.f, 0.f};
@@ -464,7 +464,7 @@ static void vol_get_transmittance(ShadeInput *shi, float *tr, float *co, float *
 	tr[2] = expf(-tau[2]);
 }
 
-void vol_shade_one_lamp(struct ShadeInput *shi, float *co, LampRen *lar, float *lacol)
+static void vol_shade_one_lamp(struct ShadeInput *shi, float *co, LampRen *lar, float *lacol)
 {
 	float visifac, lv[3], lampdist;
 	float tr[3]={1.0,1.0,1.0};