-# UnixWare 2.0x fails destest with -O
-"unixware-2.0","cc:-DFILIO_H::-Kthread::-lsocket -lnsl -lx:${x86_gcc_des} ${x86_gcc_opts}:::",
-"unixware-2.0-pentium","cc:-DFILIO_H -Kpentium::-Kthread::-lsocket -lnsl -lx:MD2_CHAR RC4_INDEX ${x86_gcc_des}::",
-
-# UnixWare 2.1
-"unixware-2.1","cc:-O -DFILIO_H::-Kthread::-lsocket -lnsl -lx:${x86_gcc_des} ${x86_gcc_opts}:::",
-"unixware-2.1-pentium","cc:-O -DFILIO_H -Kpentium::-Kthread::-lsocket -lnsl -lx:MD2_CHAR RC4_INDEX ${x86_gcc_des}::",
-"unixware-2.1-p6","cc:-O -DFILIO_H -Kp6::-Kthread::-lsocket -lnsl -lx:MD2_CHAR RC4_INDEX ${x86_gcc_des}::",
-
-# UnixWare 7
-"unixware-7","cc:-O -DFILIO_H -Kalloca::-Kthread::-lsocket -lnsl:BN_LLONG MD2_CHAR RC4_INDEX ${x86_gcc_des}::::::::::dlfcn:svr5-shared:-Kpic::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
-"unixware-7-pentium","cc:-O -DFILIO_H -Kalloca -Kpentium::-Kthread::-lsocket -lnsl:BN_LLONG MD2_CHAR RC4_INDEX ${x86_gcc_des}::::::::::dlfcn:svr5-shared:-Kpic::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
-"unixware-7-pentium_pro","cc:-O -DFILIO_H -Kalloca -Kpentium_pro::-Kthread::-lsocket -lnsl:BN_LLONG MD2_CHAR RC4_INDEX ${x86_gcc_des}::::::::::dlfcn:svr5-shared:-Kpic::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
-"unixware-7-gcc","gcc:-DL_ENDIAN -DFILIO_H -O3 -fomit-frame-pointer -m486 -Wall::-D_REENTRANT::-lsocket -lnsl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}::::::::::dlfcn:gnu-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+# SCO/Caldera targets.
+#
+# Originally we had like unixware-*, unixware-*-pentium, unixware-*-p6, etc.
+# Now we only have blended unixware-* as it's the only one used by ./config.
+# If you want to optimize for particular microarchitecture, bypass ./config
+# and './Configure unixware-7 -Kpentium_pro' or whatever appropriate.
+# Note that not all targets include assembler support. Mostly because of
+# lack of motivation to support out-of-date platforms with out-of-date
+# compiler drivers and assemblers. Tim Rice <tim@multitalents.net> has
+# patiently assisted to debug most of it.
+#
+# UnixWare 2.0x fails destest with -O.
+"unixware-2.0","cc:-DFILIO_H -DNO_STRINGS_H::-Kthread::-lsocket -lnsl -lresolv -lx:${x86_gcc_des} ${x86_gcc_opts}:::",
+"unixware-2.1","cc:-O -DFILIO_H::-Kthread::-lsocket -lnsl -lresolv -lx:${x86_gcc_des} ${x86_gcc_opts}:::",
+"unixware-7","cc:-O -DFILIO_H -Kalloca::-Kthread::-lsocket -lnsl:BN_LLONG MD2_CHAR RC4_INDEX ${x86_gcc_des}:${x86_elf_asm}:dlfcn:svr5-shared:-Kpic::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+"unixware-7-gcc","gcc:-DL_ENDIAN -DFILIO_H -O3 -fomit-frame-pointer -m486 -Wall::-D_REENTRANT::-lsocket -lnsl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}:dlfcn:gnu-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+"OpenUNIX-8","cc:-O -DFILIO_H -Kalloca::-Kthread::-lsocket -lnsl:BN_LLONG MD2_CHAR RC4_INDEX ${x86_gcc_des}:${x86_elf_asm}:dlfcn:svr5-shared:-Kpic::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+"OpenUNIX-8-gcc","gcc:-O -DFILIO_H -fomit-frame-pointer::-pthread::-lsocket -lnsl:BN_LLONG MD2_CHAR RC4_INDEX ${x86_gcc_des}:${x86_elf_asm}:dlfcn:svr5-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+"sco3-gcc", "gcc:-O3 -fomit-frame-pointer -Dssize_t=int -DNO_SYS_UN_H::(unknown)::-lsocket:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:::", # the SCO assembler doesn't seem to like our assembler files ...
+# SCO 5 - Ben Laurie <ben@algroup.co.uk> says the -O breaks the SCO cc.
+"sco5-cc", "cc:-belf::(unknown)::-lsocket -lnsl:${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}:dlfcn:svr3-shared:-Kpic::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
+"sco5-gcc", "gcc:-O3 -fomit-frame-pointer::(unknown)::-lsocket -lnsl:BN_LLONG ${x86_gcc_des} ${x86_gcc_opts}:${x86_elf_asm}:dlfcn:svr3-shared:-fPIC::.so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",