diff --git a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/err.c b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/err.c
index de6f2cc..573372c 100644
--- a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/err.c
+++ b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/err.c
@@ -82,9 +82,9 @@ char *F_err[] =
 #define MAXERR (sizeof(F_err)/sizeof(char *)+100)
 
 #ifdef KR_headers
-f__canseek(f) FILE *f; /*SYSDEP*/
+int f__canseek(f) FILE *f; /*SYSDEP*/
 #else
-f__canseek(FILE *f) /*SYSDEP*/
+int f__canseek(FILE *f) /*SYSDEP*/
 #endif
 {
 #ifdef NON_UNIX_STDIO
@@ -186,10 +186,11 @@ f_init(Void)
 	p->ufmt=1;
 	p->uwrt=1;
 }
+
 #ifdef KR_headers
-f__nowreading(x) unit *x;
+int f__nowreading(x) unit *x;
 #else
-f__nowreading(unit *x)
+int f__nowreading(unit *x)
 #endif
 {
 	long loc;
@@ -217,10 +218,11 @@ f__nowreading(unit *x)
 	x->uwrt = 0;
 	return 0;
 }
+
 #ifdef KR_headers
-f__nowwriting(x) unit *x;
+int f__nowwriting(x) unit *x;
 #else
-f__nowwriting(unit *x)
+int f__nowwriting(unit *x)
 #endif
 {
 	long loc;
diff --git a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/fmt.c b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/fmt.c
index 364210c..d0d2997 100644
--- a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/fmt.c
+++ b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/fmt.c
@@ -40,11 +40,12 @@ char *ap_end(char *s)
 	f__fatal(100, "bad string");
 	/*NOTREACHED*/ return 0;
 }
+
  static
 #ifdef KR_headers
-op_gen(a,b,c,d)
+int op_gen(a,b,c,d)
 #else
-op_gen(int a, int b, int c, int d)
+int op_gen(int a, int b, int c, int d)
 #endif
 {	struct syl *p= &f__syl[f__pc];
 	if(f__pc>=SYLMX)
@@ -57,6 +58,7 @@ op_gen(int a, int b, int c, int d)
 	p->p2.i[1]=d;
 	return(f__pc++);
 }
+
 #ifdef KR_headers
 static char *f_list();
 static char *gt_num(s,n,n1) char *s; int *n, n1;
@@ -109,9 +111,9 @@ char *f_s(char *s, int curloc)
 
  static
 #ifdef KR_headers
-ne_d(s,p) char *s,**p;
+int ne_d(s,p) char *s,**p;
 #else
-ne_d(char *s, char **p)
+int ne_d(char *s, char **p)
 #endif
 {	int n,x,sign=0;
 	struct syl *sp;
@@ -201,9 +203,9 @@ ne_d(char *s, char **p)
 
  static
 #ifdef KR_headers
-e_d(s,p) char *s,**p;
+int e_d(s,p) char *s,**p;
 #else
-e_d(char *s, char **p)
+int e_d(char *s, char **p)
 #endif
 {	int i,im,n,w,d,e,found=0,x=0;
 	char *sv=s;
@@ -318,6 +320,7 @@ e_d(char *s, char **p)
 	*p=s;
 	return(1);
 }
+
  static
 #ifdef KR_headers
 char *i_tem(s) char *s;
@@ -360,9 +363,9 @@ char *f_list(char *s)
 }
 
 #ifdef KR_headers
-pars_f(s) char *s;
+int pars_f(s) char *s;
 #else
-pars_f(char *s)
+int pars_f(char *s)
 #endif
 {
 	f__parenlvl=f__revloc=f__pc=0;
@@ -372,15 +375,16 @@ pars_f(char *s)
 	}
 	return(0);
 }
+
 #define STKSZ 10
 int f__cnt[STKSZ],f__ret[STKSZ],f__cp,f__rp;
 flag f__workdone, f__nonl;
 
  static
 #ifdef KR_headers
-type_f(n)
+int type_f(n)
 #else
-type_f(int n)
+int type_f(int n)
 #endif
 {
 	switch(n)
@@ -409,6 +413,7 @@ type_f(int n)
 		return(ED);
 	}
 }
+
 #ifdef KR_headers
 integer do_fio(number,ptr,len) ftnint *number; ftnlen len; char *ptr;
 #else
@@ -504,10 +509,12 @@ loop:	switch(type_f((p= &f__syl[f__pc])->op))
 	}
 	return(0);
 }
-en_fio(Void)
+
+int en_fio(Void)
 {	ftnint one=1;
 	return(do_fio(&one,(char *)NULL,(ftnint)0));
 }
+
  VOID
 fmt_bg(Void)
 {
diff --git a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/open.c b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/open.c
index 493aaea..9c379fe 100644
--- a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/open.c
+++ b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/open.c
@@ -271,9 +271,9 @@ integer f_open(olist *a)
 	return(0);
 }
 #ifdef KR_headers
-fk_open(seq,fmt,n) ftnint n;
+int fk_open(seq,fmt,n) ftnint n;
 #else
-fk_open(int seq, int fmt, ftnint n)
+int fk_open(int seq, int fmt, ftnint n)
 #endif
 {	char nbuf[10];
 	olist a;
diff --git a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/sfe.c b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/sfe.c
index cade56a..5ae01ae 100644
--- a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/sfe.c
+++ b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/sfe.c
@@ -10,10 +10,11 @@ integer e_rsfe(Void)
 	f__fmtbuf=NULL;
 	return(n);
 }
+
 #ifdef KR_headers
-c_sfe(a) cilist *a; /* check */
+int c_sfe(a) cilist *a; /* check */
 #else
-c_sfe(cilist *a) /* check */
+int c_sfe(cilist *a) /* check */
 #endif
 {	unit *p;
 	f__curunit = p = &f__units[a->ciunit];
@@ -23,6 +24,7 @@ c_sfe(cilist *a) /* check */
 	if(!p->ufmt) err(a->cierr,102,"sfe")
 	return(0);
 }
+
 integer e_wsfe(Void)
 {
 	int n = en_fio();
diff --git a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/wref.c b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/wref.c
index 2f3fce8..0f31e3f 100644
--- a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/wref.c
+++ b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/wref.c
@@ -16,9 +16,9 @@
 #endif
 
 #ifdef KR_headers
-wrt_E(p,w,d,e,len) ufloat *p; ftnlen len;
+int wrt_E(p,w,d,e,len) ufloat *p; ftnlen len;
 #else
-wrt_E(ufloat *p, int w, int d, int e, ftnlen len)
+int wrt_E(ufloat *p, int w, int d, int e, ftnlen len)
 #endif
 {
 	char buf[FMAX+EXPMAXDIGS+4], *s, *se;
@@ -192,9 +192,9 @@ nogood:
 	}
 
 #ifdef KR_headers
-wrt_F(p,w,d,len) ufloat *p; ftnlen len;
+int wrt_F(p,w,d,len) ufloat *p; ftnlen len;
 #else
-wrt_F(ufloat *p, int w, int d, ftnlen len)
+int wrt_F(ufloat *p, int w, int d, ftnlen len)
 #endif
 {
 	int d1, sign, n;
diff --git a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/wrtfmt.c b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/wrtfmt.c
index 92ce295..c65a6bc 100644
--- a/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/wrtfmt.c
+++ b/digikam/imageplugins/coreplugin/sharpnesseditor/clapack/wrtfmt.c
@@ -218,9 +218,9 @@ wrt_H(int a, char *s)
 	return(1);
 }
 #ifdef KR_headers
-wrt_L(n,len, sz) Uint *n; ftnlen sz;
+int wrt_L(n,len, sz) Uint *n; ftnlen sz;
 #else
-wrt_L(Uint *n, int len, ftnlen sz)
+int wrt_L(Uint *n, int len, ftnlen sz)
 #endif
 {	int i;
 	long x;
@@ -290,9 +290,9 @@ wrt_G(ufloat *p, int w, int d, int e, ftnlen len)
 	return(wrt_E(p,w,d,e,len));
 }
 #ifdef KR_headers
-w_ed(p,ptr,len) struct syl *p; char *ptr; ftnlen len;
+int w_ed(p,ptr,len) struct syl *p; char *ptr; ftnlen len;
 #else
-w_ed(struct syl *p, char *ptr, ftnlen len)
+int w_ed(struct syl *p, char *ptr, ftnlen len)
 #endif
 {
 	int i;
@@ -336,9 +336,9 @@ w_ed(struct syl *p, char *ptr, ftnlen len)
 	}
 }
 #ifdef KR_headers
-w_ned(p) struct syl *p;
+int w_ned(p) struct syl *p;
 #else
-w_ned(struct syl *p)
+int w_ned(struct syl *p)
 #endif
 {
 	switch(p->op)