Rcpp build error on Solaris Studio 12.3

Rcpp-errors.out

> install.packages("Rcpp")
Installing package into '/export/home/jeroen/R/i386-pc-solaris2.11-library/3.2'
(as 'lib' is unspecified)
trying URL 'http://cran.rstudio.com/src/contrib/Rcpp_0.11.3.tar.gz'
Content type 'application/x-gzip' length 2169583 bytes (2.1 MB)
opened URL
==================================================
downloaded 2.1 MB

* installing *source* package 'Rcpp' ...
** package 'Rcpp' successfully unpacked and MD5 sums checked
** libs
CC -library=stlport4 -I/opt/R-devel/lib/R/include -DNDEBUG -I../inst/include/ -I/opt/csw/include    -KPIC  -O  -c Date.cpp -o Date.o
"../inst/include/Rcpp/Interrupt.h", line 60: Warning (Anachronism): Formal argument fun of type extern "C" void(*)(void*) in call to R_ToplevelExec(extern "C" void(*)(void*), void*) is being passed void(*)(void*).
"../inst/include/Rcpp/api/meat/proxy.h", line 32: Error: Could not find a match for Rcpp::AttributeProxyPolicy<Rcpp::CLASS>::AttributeProxy::operator=(const Rcpp::T&).
"../inst/include/Rcpp/api/meat/proxy.h", line 63: Error: Could not find a match for Rcpp::NamesProxyPolicy<Rcpp::CLASS>::NamesProxy::operator=(const Rcpp::T&).
"../inst/include/Rcpp/api/meat/proxy.h", line 84: Error: Could not find a match for Rcpp::SlotProxyPolicy<Rcpp::CLASS>::SlotProxy::operator=(const Rcpp::T&).
"../inst/include/Rcpp/api/meat/proxy.h", line 99: Error: Could not find a match for Rcpp::TagProxyPolicy<Rcpp::XPtrClass>::TagProxy::operator=<Rcpp::TagProxyPolicy<Rcpp::XPtrClass>::TagProxy::U>(const Rcpp::T&).
"../inst/include/Rcpp/api/meat/proxy.h", line 130: Error: Could not find a match for Rcpp::BindingPolicy<Rcpp::EnvironmentClass>::Binding::operator=(const Rcpp::T&).
"../inst/include/Rcpp/api/meat/proxy.h", line 151: Error: Could not find a match for Rcpp::DottedPairProxyPolicy<Rcpp::CLASS>::DottedPairProxy::operator=(const Rcpp::T&).
"../inst/include/Rcpp/api/meat/proxy.h", line 159: Error: Could not find a match for Rcpp::DottedPairProxyPolicy<Rcpp::CLASS>::DottedPairProxy::operator=(const Rcpp::traits::named_object<Rcpp::DottedPairProxyPolicy<Rcpp::CLASS>::DottedPairProxy::T>&).
"../inst/include/Rcpp/api/meat/proxy.h", line 186: Error: Could not find a match for Rcpp::FieldProxyPolicy<Rcpp::CLASS>::FieldProxy::operator=(const Rcpp::T&).
8 Error(s) and 1 Warning(s) detected.
/opt/R-devel/lib/R/etc/Makeconf:141: recipe for target 'Date.o' failed
gmake: *** [Date.o] Error 2
ERROR: compilation failed for package 'Rcpp'
* removing '/export/home/jeroen/R/i386-pc-solaris2.11-library/3.2/Rcpp'

RJSONIO-errors.out

> install.packages("RJSONIO")
Installing package into '/export/home/jeroen/R/i386-pc-solaris2.11-library/3.2'
(as 'lib' is unspecified)
--- Please select a CRAN mirror for use in this session ---
trying URL 'http://cran.rstudio.com/src/contrib/RJSONIO_1.3-0.tar.gz'
Content type 'application/x-gzip' length 1148375 bytes (1.1 MB)
opened URL
==================================================
downloaded 1.1 MB

* installing *source* package 'RJSONIO' ...
** package 'RJSONIO' successfully unpacked and MD5 sums checked
Trying to find libjson.h header file
checking for gcc... no
checking for cc... cc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... no
checking whether cc accepts -g... yes
checking for cc option to accept ISO C89... none needed
USE_LOCAL = ""
Minor Version: 6
Using local libjson code. Copying files from src/libjson/Source
/tmp/RtmpHkaW1f/R.INSTALLbae59121453/RJSONIO
JSONAllocator.cpp
JSONChildren.cpp
JSONDebug.cpp
JSONIterators.cpp
JSONMemory.cpp
JSONNode.cpp
JSONNode_Mutex.cpp
JSONPreparse.cpp
JSONStream.cpp
JSONValidator.cpp
JSONWorker.cpp
JSONWriter.cpp
internalJSONNode.cpp
libjson.cpp
configure: creating ./config.status
config.status: creating src/Makevars
config.status: creating cleanup
** libs
cc -xc99 -I/opt/R-devel/lib/R/include -DNDEBUG -I. -Ilibjson -Ilibjson/Source -DNEW_JSON_NEW_STREAM -DNDEBUG=1 -DJSON_STREAM=1 -DJSON_VALIDATE -DJSON_READ_PRIORITY=1 -DJSON_LIBRARY=1  -DJSON_ISO_STRICT -I/opt/csw/include    -KPIC  -I/opt/csw/include -O -xlibmieee  -c ConvertUTF.c -o ConvertUTF.o
CC -library=stlport4 -I/opt/R-devel/lib/R/include -DNDEBUG -I. -Ilibjson -Ilibjson/Source -DNEW_JSON_NEW_STREAM -DNDEBUG=1 -DJSON_STREAM=1 -DJSON_VALIDATE -DJSON_READ_PRIORITY=1 -DJSON_LIBRARY=1  -DJSON_ISO_STRICT -I/opt/csw/include    -KPIC  -O  -c JSONAllocator.cpp -o JSONAllocator.o
CC -library=stlport4 -I/opt/R-devel/lib/R/include -DNDEBUG -I. -Ilibjson -Ilibjson/Source -DNEW_JSON_NEW_STREAM -DNDEBUG=1 -DJSON_STREAM=1 -DJSON_VALIDATE -DJSON_READ_PRIORITY=1 -DJSON_LIBRARY=1  -DJSON_ISO_STRICT -I/opt/csw/include    -KPIC  -O  -c JSONChildren.cpp -o JSONChildren.o
"libjson/Source/JSONChildren.h", line 41: Error: "}" expected instead of ";".
"libjson/Source/JSONChildren.h", line 43: Error: No direct declarator preceding "(".
"libjson/Source/JSONChildren.h", line 54: Error: Illegal number of arguments for ~file level().
"libjson/Source/JSONChildren.h", line 55: Error: array is not defined.
"libjson/Source/JSONChildren.h", line 56: Error: The function "deleteAll" must have a prototype.
"libjson/Source/JSONChildren.h", line 57: Error: array is not defined.
"libjson/Source/JSONChildren.h", line 60: Warning: "~file level()" is expected to return a value.
"libjson/Source/JSONChildren.h", line 70: Error: array is not defined.
"libjson/Source/JSONChildren.h", line 70: Error: The operation "++ jsonChildren" is illegal.
"libjson/Source/JSONChildren.h", line 77: Error: array is not defined.
"libjson/Source/JSONChildren.h", line 77: Error: array is not defined.
"libjson/Source/JSONChildren.h", line 77: Error: The operation "++ jsonChildren" is illegal.
"libjson/Source/JSONChildren.h", line 78: Error: array is not defined.
"libjson/Source/JSONChildren.h", line 82: Error: operator[](unsigned) const must be a member function.
"libjson/Source/JSONChildren.h", line 82: Error: The function "operator[](unsigned) const" cannot be declared const.
"libjson/Source/JSONChildren.h", line 87: Error: array is not defined.
"libjson/Source/JSONChildren.h", line 91: Error: The function "capacity() const" cannot be declared const.
"libjson/Source/JSONChildren.h", line 93: Error: Cannot return jsonChildren from a function that should return unsigned.
"libjson/Source/JSONChildren.h", line 97: Error: The function "size() const" cannot be declared const.
"libjson/Source/JSONChildren.h", line 99: Error: Cannot return jsonChildren from a function that should return unsigned.
"libjson/Source/JSONChildren.h", line 103: Error: The function "empty() const" cannot be declared const.
"libjson/Source/JSONChildren.h", line 105: Error: The operation "jsonChildren == int" is illegal.
"libjson/Source/JSONChildren.h", line 111: Error: array is not defined.
"libjson/Source/JSONChildren.h", line 113: Error: The function "deleteAll" must have a prototype.
"libjson/Source/JSONChildren.h", line 114: Warning (Anachronism): Assigning int to jsonChildren.
"libjson/Source/JSONChildren.h", line 114: Error: Cannot cast from int to jsonChildren.
"libjson/Source/JSONChildren.h", line 120: Error: The function "begin() const" cannot be declared const.
Compilation aborted, too many Error messages.
*** Error code 2
make: Fatal error: Command failed for target `JSONChildren.o'
ERROR: compilation failed for package 'RJSONIO'
* removing '/export/home/jeroen/R/i386-pc-solaris2.11-library/3.2/RJSONIO'

The downloaded source packages are in
	'/tmp/RtmpL8aq1f/downloaded_packages'
Warning message:
In install.packages("RJSONIO") :
  installation of package 'RJSONIO' had non-zero exit status