Lose -Wwrite-strings because of Solarish 'struct option' initialization.
illumos doesn't cope with stack-protector for now.

*** 16,27 ****
  SOURCES = $(wildcard *.c *.h)
  CRUFT   = $(wildcard *.c~ *.h~ *.c.BAK *.h.BAK *.o *.a *.so *.dylib)
  INDENT  = $(shell (if indent --version 2>&1 | grep GNU > /dev/null; then echo indent ; elif gindent --version 2>&1 | grep GNU > /dev/null; then echo gindent; else echo true ; fi ))
  
  CFLAGS = -pedantic -Wall -Werror -Wimplicit -Wunused -Wcomment -Wchar-subscripts -Wuninitialized \
!          -Wshadow -Wcast-qual -Wcast-align -Wwrite-strings -Wstack-protector -fPIC \
!          -std=c99 -D_POSIX_C_SOURCE=200112L -fstack-protector-all -O2 -I../libcrypto-root/include/ \
           -I../api/ -I../ -Wno-deprecated-declarations -Wno-unknown-pragmas -Wformat-security \
           -D_FORTIFY_SOURCE=2
  
  INDENTOPTS = -npro -kr -i4 -ts4 -nut -sob -l180 -ss -ncs -cp1
  
--- 16,27 ----
  SOURCES = $(wildcard *.c *.h)
  CRUFT   = $(wildcard *.c~ *.h~ *.c.BAK *.h.BAK *.o *.a *.so *.dylib)
  INDENT  = $(shell (if indent --version 2>&1 | grep GNU > /dev/null; then echo indent ; elif gindent --version 2>&1 | grep GNU > /dev/null; then echo gindent; else echo true ; fi ))
  
  CFLAGS = -pedantic -Wall -Werror -Wimplicit -Wunused -Wcomment -Wchar-subscripts -Wuninitialized \
!          -Wshadow -Wcast-qual -Wcast-align -fPIC \
!          -std=c99 -D_POSIX_C_SOURCE=200112L -O2 -I../libcrypto-root/include/ \
           -I../api/ -I../ -Wno-deprecated-declarations -Wno-unknown-pragmas -Wformat-security \
           -D_FORTIFY_SOURCE=2
  
  INDENTOPTS = -npro -kr -i4 -ts4 -nut -sob -l180 -ss -ncs -cp1