IRIX Fixes for Dropbear 2020.81

diff -urnp dropbear-2020.81/libtomcrypt/makefile_include.mk dropbear-2020.81-patched/libtomcrypt/makefile_include.mk
*** dropbear-2020.81/libtomcrypt/makefile_include.mk    Thu Oct 29 09:35:50 2020
--- dropbear-2020.81-patched/libtomcrypt/makefile_include.mk    Wed Apr 14 13:27:29 2021
*************** LTC_CFLAGS += -W
*** 83,89 ****
  # older GCCs can't handle the "rotate with immediate" ROLc/RORc/etc macros
  # define this to help
  LTC_CFLAGS += -DLTC_NO_ROLC
! else
  LTC_CFLAGS += -Wextra
  # additional warnings
  LTC_CFLAGS += -Wsystem-headers -Wbad-function-cast -Wcast-align
--- 83,91 ----
  # older GCCs can't handle the "rotate with immediate" ROLc/RORc/etc macros
  # define this to help
  LTC_CFLAGS += -DLTC_NO_ROLC
! endif
!
! ifdef GNUC
  LTC_CFLAGS += -Wextra
  # additional warnings
  LTC_CFLAGS += -Wsystem-headers -Wbad-function-cast -Wcast-align
diff -urnp dropbear-2020.81/libtommath/Makefile.in dropbear-2020.81-patched/libtommath/Makefile.in
*** dropbear-2020.81/libtommath/Makefile.in     Thu Oct 29 09:35:50 2020
--- dropbear-2020.81-patched/libtommath/Makefile.in     Wed Apr 14 13:39:24 2021
*************** srcdir=@srcdir@
*** 7,13 ****

  # So that libtommath can include Dropbear headers for options and m_burn()
  CFLAGS += -I$(srcdir) -I../libtomcrypt/src/headers/ -I$(srcdir)/../libtomcrypt/src/headers/ -I../ -I$(srcdir)/../
- CFLAGS += -Wno-deprecated

  V = 1

--- 7,12 ----
diff -urnp dropbear-2020.81/libtommath/makefile_include.mk dropbear-2020.81-patched/libtommath/makefile_include.mk
*** dropbear-2020.81/libtommath/makefile_include.mk     Thu Oct 29 09:35:50 2020
--- dropbear-2020.81-patched/libtommath/makefile_include.mk     Wed Apr 14 13:40:00 2021
*************** else
*** 48,54 ****
  endif
  endif

- LTM_CFLAGS += -I./ -Wall -Wsign-compare -Wextra -Wshadow

  # renamed for Dropbear to avoid clash with oss-fuzz $SANITIZER var
  ifdef LTM_SANITIZER
--- 48,53 ----
*************** ifdef LTM_SANITIZER
*** 55,61 ****
  LTM_CFLAGS += -fsanitize=undefined -fno-sanitize-recover=all -fno-sanitize=float-divide-by-zero
  endif

! ifndef NO_ADDTL_WARNINGS
  # additional warnings
  LTM_CFLAGS += -Wdeclaration-after-statement -Wbad-function-cast -Wcast-align
  LTM_CFLAGS += -Wstrict-prototypes -Wpointer-arith
--- 54,63 ----
  LTM_CFLAGS += -fsanitize=undefined -fno-sanitize-recover=all -fno-sanitize=float-divide-by-zero
  endif

! ifdef GNUC
! LTM_CFLAGS += -I./ -Wall -Wsign-compare -Wextra -Wshadow -Wno-deprecated
! else ifdef NO_ADDTL_WARNINGS
! LTM_CFLAGS += -I./ -Wall -Wsign-compare -Wextra -Wshadow -Wno-deprecated
  # additional warnings
  LTM_CFLAGS += -Wdeclaration-after-statement -Wbad-function-cast -Wcast-align
  LTM_CFLAGS += -Wstrict-prototypes -Wpointer-arith
*************** LTM_CFLAGS += -std=c89 -Wconversion -Wsi
*** 66,72 ****
  ifeq ($(CONV_WARNINGS), strict)
  LTM_CFLAGS += -DMP_USE_ENUMS -Wc++-compat
  endif
! else
  LTM_CFLAGS += -Wsystem-headers
  endif

--- 68,74 ----
  ifeq ($(CONV_WARNINGS), strict)
  LTM_CFLAGS += -DMP_USE_ENUMS -Wc++-compat
  endif
! else ifdef GNUC
  LTM_CFLAGS += -Wsystem-headers
  endif