- attempt to cleanup a few warnings

- attempt to get git rev info each compile (not just when running cmake)

source/shared_lib/include/streflop/libm/headers/features.h

@@ -287,11 +287,17 @@
 #endif
 
 /* We do support the IEC 559 math functionality, real and complex.  */
+#if !defined(__STDC_IEC_559__)
 #define __STDC_IEC_559__		1
+#endif
+#if !defined(__STDC_IEC_559_COMPLEX__)
 #define __STDC_IEC_559_COMPLEX__	1
+#endif
 
 /* wchar_t uses ISO 10646-1 (2nd ed., published 2000-09-15) / Unicode 3.1.  */
+#if !defined(__STDC_ISO_10646__)
 #define __STDC_ISO_10646__		200009L
+#endif
 
 /* This macro indicates that the installed library is the GNU C Library.
    For historic reasons the value now is 6 and this will stay from now

source/shared_lib/sources/streflop/libm/flt-32/e_gammaf_r.cpp

@@ -46,7 +46,7 @@ __ieee754_gammaf_r (Simple x, int *signgamp)
       *signgamp = 0;
       return (x - x) / (x - x);
     }
-  if (hx == 0xff800000)
+  if ((u_int32_t)hx == 0xff800000)
     {
       /* x == -Inf.  According to ISO this is NaN.  */
       *signgamp = 0;

source/shared_lib/sources/streflop/libm/flt-32/e_lgammaf_r.cpp

@@ -163,6 +163,7 @@ static Simple zero=  0.0000000000e+00f;
 	GET_FLOAT_WORD(hx,x);
 
     /* purge off +-inf, NaN, +-0, and negative arguments */
+        nadj = 0;
 	*signgamp = 1;
 	ix = hx&0x7fffffff;
 	if(ix>=0x7f800000) return x*x;