If one is trying to compile openboot on Solaris using the Solaris C compiler the source code Makefiles' DFLAG settings will need to have "-Xs" added.
The code uses the word "restrict" in a prototype which is an ANSI C99 keyword.
I was checking the options and trying to understand why an error was occuring on a valid prototype line and tried adding -Xt and eventually -Xs to the compiler options. It looks like it may be a C89/C90 versus C99 issue.
The compiler default appears to be ANSI C99 mode based upon this from the -flags output
-Xa Compile assuming ANSI C conformance, allow K & R extensions (default mode)
-Xc Compile assuming strict ANSI C conformance
-Xs Compile assuming (pre-ANSI) K & R C style code
-Xt Compile assuming K & R conformance, allow ANSI C
and in ./trunk/tools/fscope/fscope.h at line 120 this
search_t *build_searchlist(extract_t *info, search_t *root, int restrict);
appeared to be causing the error. When I added -Xs this warning was generated
"./fscope.h", line 120: warning: restrict is a keyword in ISO C99
instead of this error
"./fscope.h", line 120: Non-pointer types cannot be restrict qualified
The word argument "restrict" in the prototype appears to be culprit. I appear to have gotten a clean build Sun C 5.3.