Unbound 1.10.0 compile error on Solaris 11.4

[Jaco Lesch]

Guys

Getting the following error when compiling Unbound 1.10.0 on Solaris 
11.4 with Studio 12.6, looks like the issue is in the 
"unbound-checkconf.c" code. The compiler spits out the following:
------------------------------------------------------------------------
libtool: compile: 
/opt/SunStudio/OracleDeveloperStudio12.6-solaris-sparc-bin/developerstudio12.6/bin/cc 
-I. -I/opt/local/include -I/opt/local/include -DSRCDIR=. -m64 -fast 
-Qoption cg -xregs=no%appl -W2,-xwrap_int -xlinkopt -mt -D_REENTRANT -c 
smallapp/unbound-checkconf.c  -KPIC -DPIC -o .libs/unbound-checkconf.o
"./util/log.h", line 75: warning:  attribute "format" is unknown, ignored
"./util/log.h", line 149: warning:  attribute "format" is unknown, ignored
"./util/log.h", line 156: warning:  attribute "format" is unknown, ignored
"./util/log.h", line 163: warning:  attribute "format" is unknown, ignored
"./util/log.h", line 179: warning:  attribute "format" is unknown, ignored
"./util/log.h", line 186: warning:  attribute "format" is unknown, ignored
"./util/log.h", line 202: warning:  attribute "format" is unknown, ignored
"./util/config_file.h", line 1206: warning:  attribute "format" is 
unknown, ignored
"./sldns/sbuffer.h", line 142: warning:  attribute "unused" is unknown, 
ignored
"./sldns/sbuffer.h", line 730: warning:  attribute "format" is unknown, 
ignored
"smallapp/unbound-checkconf.c", line 704: invalid token: 0i
"smallapp/unbound-checkconf.c", line 704: syntax error before or at: ,
"smallapp/unbound-checkconf.c", line 707: warning: function prototype 
parameters must have types
"smallapp/unbound-checkconf.c", line 707: warning: old-style declaration 
or incorrect type for: auth_zones_delete
"smallapp/unbound-checkconf.c", line 707: identifier redeclared: 
auth_zones_delete
         current : function() returning int
         previous: function(pointer to struct auth_zones {struct 
_pthread_rwlock {..} lock, struct rbtree_type {..} ztree, struct 
rbtree_type {..} xtree, int have_downstream, unsigned long num_query_up, 
unsigned long num_query_down, pointer to struct rpz {..} rpz_first, 
struct _pthread_rwlock {..} rpz_lock}) returning void : 
"./services/authzone.h", line 494
"smallapp/unbound-checkconf.c", line 708: syntax error before or at: }
cc: acomp failed for smallapp/unbound-checkconf.c
gmake: *** [Makefile:291: unbound-checkconf.lo] Error 1
------------------------------------------------------------------------


Although when I compile wit GCC 9.2.0 the code is compiling fine. Any 
assistance, or insight will be appreciated.

Regards

-- 
---
Jaco Lesch
SAIX HLS
Email:jacol at saix.net

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