Bug: https://bugs.gentoo.org/600380

--- a/bardecode/code25i.hh
+++ b/bardecode/code25i.hh
@@ -21,6 +21,12 @@
 
 #include "scanner_utils.hh"
 
+#if __cplusplus >= 201103L
+#define STATIC_CONST_DOUBLE static constexpr double
+#else
+#define STATIC_CONST_DOUBLE static const double
+#endif
+
 namespace BarDecode
 {
     struct code25i_t
@@ -31,11 +37,11 @@
         static const int END_SEQUENCE = 0xD;
         static const char no_entry = 0;
 
-        static const double n_lq = 15;
-        static const double n_hq = 5.3;
-        static const double w_lq = 5.2;
-        static const double w_hq = 1.5;
-        static const double tol = 0.2;
+        STATIC_CONST_DOUBLE n_lq = 15;
+        STATIC_CONST_DOUBLE n_hq = 5.3;
+        STATIC_CONST_DOUBLE w_lq = 5.2;
+        STATIC_CONST_DOUBLE w_hq = 1.5;
+        STATIC_CONST_DOUBLE tol = 0.2;
 
         static const usize_t min_quiet_usize = 5;
         //static const usize_t min_quiet_usize = 10;
--- a/codecs/dcraw.h
+++ b/codecs/dcraw.h
@@ -3958,22 +3958,22 @@
     -2,+0,+0,-1,0,0x06, -2,+0,+0,+0,1,0x02, -2,+0,+0,+1,0,0x03,
     -2,+1,-1,+0,0,0x04, -2,+1,+0,-1,1,0x04, -2,+1,+0,+0,0,0x06,
     -2,+1,+0,+1,0,0x02, -2,+2,+0,+0,1,0x04, -2,+2,+0,+1,0,0x04,
-    -1,-2,-1,+0,0,0x80, -1,-2,+0,-1,0,0x01, -1,-2,+1,-1,0,0x01,
-    -1,-2,+1,+0,1,0x01, -1,-1,-1,+1,0,0x88, -1,-1,+1,-2,0,0x40,
+    -1,-2,-1,+0,0,(signed char) 0x80, -1,-2,+0,-1,0,0x01, -1,-2,+1,-1,0,0x01,
+    -1,-2,+1,+0,1,0x01, -1,-1,-1,+1,0,(signed char) 0x88, -1,-1,+1,-2,0,0x40,
     -1,-1,+1,-1,0,0x22, -1,-1,+1,+0,0,0x33, -1,-1,+1,+1,1,0x11,
     -1,+0,-1,+2,0,0x08, -1,+0,+0,-1,0,0x44, -1,+0,+0,+1,0,0x11,
     -1,+0,+1,-2,1,0x40, -1,+0,+1,-1,0,0x66, -1,+0,+1,+0,1,0x22,
     -1,+0,+1,+1,0,0x33, -1,+0,+1,+2,1,0x10, -1,+1,+1,-1,1,0x44,
     -1,+1,+1,+0,0,0x66, -1,+1,+1,+1,0,0x22, -1,+1,+1,+2,0,0x10,
     -1,+2,+0,+1,0,0x04, -1,+2,+1,+0,1,0x04, -1,+2,+1,+1,0,0x04,
-    +0,-2,+0,+0,1,0x80, +0,-1,+0,+1,1,0x88, +0,-1,+1,-2,0,0x40,
+    +0,-2,+0,+0,1,(signed char) 0x80, +0,-1,+0,+1,1,(signed char) 0x88, +0,-1,+1,-2,0,0x40,
     +0,-1,+1,+0,0,0x11, +0,-1,+2,-2,0,0x40, +0,-1,+2,-1,0,0x20,
     +0,-1,+2,+0,0,0x30, +0,-1,+2,+1,1,0x10, +0,+0,+0,+2,1,0x08,
     +0,+0,+2,-2,1,0x40, +0,+0,+2,-1,0,0x60, +0,+0,+2,+0,1,0x20,
     +0,+0,+2,+1,0,0x30, +0,+0,+2,+2,1,0x10, +0,+1,+1,+0,0,0x44,
     +0,+1,+1,+2,0,0x10, +0,+1,+2,-1,1,0x40, +0,+1,+2,+0,0,0x60,
-    +0,+1,+2,+1,0,0x20, +0,+1,+2,+2,0,0x10, +1,-2,+1,+0,0,0x80,
-    +1,-1,+1,+1,0,0x88, +1,+0,+1,+2,0,0x08, +1,+0,+2,-1,0,0x40,
+    +0,+1,+2,+1,0,0x20, +0,+1,+2,+2,0,0x10, +1,-2,+1,+0,0,(signed char) 0x80,
+    +1,-1,+1,+1,0,(signed char) 0x88, +1,+0,+1,+2,0,0x08, +1,+0,+2,-1,0,0x40,
     +1,+0,+2,+1,0,0x10
   }, chood[] = { -1,-1, -1,0, -1,+1, 0,+1, +1,+1, +1,0, +1,-1, 0,-1 };
   ushort (*brow[5])[4], *pix;