yubico-pam compile-time errors

alex@openindiana:~/yubico-pam$ ./configure --without-cr --without-ldap
checking for a BSD-compatible install... /usr/gnu/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/gnu/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether make supports nested variables... (cached) yes
checking for style of include used by make... GNU
checking for gcc... gcc
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... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking whether gcc understands -c and -o together... yes
checking dependency style of gcc... gcc3
checking for ar... ar
checking the archiver (ar) interface... ar
checking build system type... i386-pc-solaris2.11
checking host system type... i386-pc-solaris2.11
checking how to print strings... print -r
checking for a sed that does not truncate output... /usr/gnu/bin/sed
checking for grep that handles long lines and -e... /usr/gnu/bin/grep
checking for egrep... /usr/gnu/bin/grep -E
checking for fgrep... /usr/gnu/bin/grep -F
checking for ld used by gcc... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... no
checking for BSD- or MS-compatible name lister (nm)... /usr/gnu/bin/nm -B
checking the name lister (/usr/gnu/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 786240
checking whether the shell understands some XSI constructs... yes
checking whether the shell understands "+="... yes
checking how to convert i386-pc-solaris2.11 file names to i386-pc-solaris2.11 format... func_convert_file_noop
checking how to convert i386-pc-solaris2.11 file names to toolchain format... func_convert_file_noop
checking for /usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... dlltool
checking how to associate runtime and link libraries... print -r --
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/gnu/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for mt... mt
checking if mt is a manifest tool... no
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... no
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/usr/bin/ld) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... solaris2.11 ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... no
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... no
checking security/pam_appl.h usability... yes
checking security/pam_appl.h presence... yes
checking for security/pam_appl.h... yes
checking for security/pam_modules.h... yes
checking for security/_pam_macros.h... no
checking for security/pam_modutil.h... no
checking for pam_start in -lpam... yes
checking for library containing pam_modutil_drop_priv... no
checking for ld used by GCC... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... no
checking for shared library run path origin... done
checking for 64-bit host... no
checking for libykclient... yes
checking how to link with libykclient... /usr/local/lib/libykclient.so -lcurl -R/usr/local/lib
checking for libyubikey... yes
checking how to link with libyubikey... /usr/local/lib/libyubikey.so -R/usr/local/lib
configure: PAM installation path $(exec_prefix)/lib/security
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating tests/Makefile
config.status: executing depfiles commands
config.status: executing libtool commands
configure: Summary of build options:

  Version:            2.24
  Host type:          i386-pc-solaris2.11
  Install prefix:     /usr/local
  Compiler:           gcc
  Library types:      Shared=yes, Static=no
  LDAP:               no
  Challenge-Response: no

alex@openindiana:~/yubico-pam$ gmake
Making all in .
gmake[1]: Entering directory '/home/alex/yubico-pam'
  CC       drop_privs.lo
  CC       util.lo
  CCLD     libpam_util.la
  CC       pam_yubico.lo
pam_yubico.c: In function 'authorize_user_token':
pam_yubico.c:167:15: error: too many arguments to function 'getpwnam_r'
       pwres = getpwnam_r (username, &pass, buf, buflen, &p);
               ^
In file included from util.h:39:0,
                 from pam_yubico.c:44:
/usr/include/pwd.h:167:23: note: declared here
 extern struct passwd *getpwnam_r(const char *, struct passwd *, char *, int);
                       ^
pam_yubico.c:167:13: warning: assignment makes integer from pointer without a cast
       pwres = getpwnam_r (username, &pass, buf, buflen, &p);
             ^
pam_yubico.c: In function 'pam_sm_authenticate':
pam_yubico.c:855:32: warning: passing argument 2 of 'pam_get_user' from incompatible pointer type
   retval = pam_get_user (pamh, &user, NULL);
                                ^
In file included from drop_privs.h:40:0,
                 from pam_yubico.c:45:
/usr/include/security/pam_appl.h:225:1: note: expected 'char **' but argument is of type 'const char **'
 pam_get_user(
 ^
pam_yubico.c:875:49: warning: passing argument 3 of 'pam_get_item' from incompatible pointer type
       retval = pam_get_item (pamh, PAM_AUTHTOK, (const void **) &password);
                                                 ^
In file included from drop_privs.h:40:0,
                 from pam_yubico.c:45:
/usr/include/security/pam_appl.h:186:1: note: expected 'void **' but argument is of type 'const void **'
 pam_get_item(
 ^
pam_yubico.c:968:46: warning: passing argument 3 of 'pam_get_item' from incompatible pointer type
       retval = pam_get_item (pamh, PAM_CONV, (const void **) &conv);
                                              ^
In file included from drop_privs.h:40:0,
                 from pam_yubico.c:45:
/usr/include/security/pam_appl.h:186:1: note: expected 'void **' but argument is of type 'const void **'
 pam_get_item(
 ^
pam_yubico.c:997:35: warning: passing argument 2 of 'conv->conv' from incompatible pointer type
       retval = conv->conv (nargs, pmsg, &resp, conv->appdata_ptr);
                                   ^
pam_yubico.c:997:35: note: expected 'struct pam_message **' but argument is of type 'const struct pam_message **'
gmake[1]: *** [Makefile:670: pam_yubico.lo] Error 1
gmake[1]: Leaving directory '/home/alex/yubico-pam'
gmake: *** [Makefile:774: all-recursive] Error 1

alex@openindiana:~/yubico-pam$ uname -a
SunOS openindiana 5.11 illumos-2f7f7a6 i86pc i386 i86pc Solaris