I am building ghostscript version 8.70 on an HP rx2660 running HP-UX 11.31.

I have the HP C/aCC++ Developer's Bundle installed (version C.11.31.04.2).

I am getting 4 errors detected when compiling ./base/gxpcolor.h

aCC  -DHAVE_MKSTEMP -DHAVE_HYPOT    -O -Ae +DD64 -DSOCKS -I/usr/local/include
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64  -DHAVE_STDINT_H
-DGX_COLOR_INDEX_TYPE="unsigned long int" -Ae -O  -I./obj -I./base  -o
./obj/gxblend1.o -c ./base/gxblend1.c
"./base/gxpcolor.h", line 139: error #2092: identifier-list parameters may
          only be used in a function definition
  extern dev_color_proc_save_dc(gx_dc_pattern_save_dc);
         ^

"./base/gxpcolor.h", line 140: error #2092: identifier-list parameters may
          only be used in a function definition
  extern dev_color_proc_write(gx_dc_pattern_write);
         ^

"./base/gxpcolor.h", line 141: error #2092: identifier-list parameters may
          only be used in a function definition
  extern dev_color_proc_read(gx_dc_pattern_read);
         ^

"./base/gxpcolor.h", line 147: error #2092: identifier-list parameters may
          only be used in a function definition
  extern dev_color_proc_get_nonzero_comps(gx_dc_pattern_get_nonzero_comps);
         ^

"./base/gxpcolor.h", line 171: warning #2815-D: type qualifier on return type
          is meaningless
      const void (* pat_trans_fill)(int xmin, int ymin, int xmax, int ymax, int
px, int py, const gx_color_tile *ptile,
      ^

4 errors detected in the compilation of "./base/gxblend1.c".
*** Error exit code 2

Stop.