Eliminate bsd.stand.mk and -fPIC 32-bit intel builds

OK. We don't really need a bsd.stand.mk, and it was causing a -fPIC
for the toolchain to be added (bogusly) when building on amd64. Pull
all relevant defs back into defs.mk and delete bsd.stand.mk.

This saves about 15-20k on i386 loader and zfsloader which when
combined with Lua give us a lot more stack space in those constrained
environments.

share/mk/bsd.stand.mk

@@ -1,29 +0,0 @@
-# $FreeBSD$
-#
-# Common definitons for programs building in the stand-alone environment
-# and/or using libstand.
-#
-
-CFLAGS+= -ffreestanding -Wformat
-CFLAGS+= ${CFLAGS_NO_SIMD} -D_STANDALONE
-.if ${MACHINE_CPUARCH} == "riscv"
-CFLAGS+=	-march=rv64imac -mabi=lp64
-.elif ${MACHINE_CPUARCH} != "aarch64"
-CFLAGS+=	-msoft-float
-.endif
-
-.if ${MACHINE_CPUARCH} == "i386"
-CFLAGS.gcc+=	-mpreferred-stack-boundary=2
-.endif
-.if ${MACHINE_CPUARCH} == "amd64"
-CFLAGS+=	-fPIC -mno-red-zone
-.endif
-.if ${MACHINE_CPUARCH} == "aarch64"
-CFLAGS+=	-fPIC -mgeneral-regs-only
-.endif
-.if ${MACHINE_CPUARCH} == "arm"
-CFLAGS+=	-fPIC
-.endif
-.if ${MACHINE_CPUARCH} == "mips"
-CFLAGS+=	-G0 -fno-pic -mno-abicalls
-.endif

stand/defs.mk

@@ -101,8 +101,10 @@ SSP_CFLAGS=
 # currently has no /boot/loader, but may soon.
 CFLAGS+=	-ffreestanding ${CFLAGS_NO_SIMD}
 .if ${MACHINE_CPUARCH} == "aarch64"
-CFLAGS+=	-mgeneral-regs-only
-.elif ${MACHINE_CPUARCH} != "riscv"
+CFLAGS+=	-mgeneral-regs-only -fPIC
+.elif ${MACHINE_CPUARCH} == "riscv"
+CFLAGS+=	-march=rv64imac -mabi=lp64
+.else
 CFLAGS+=	-msoft-float
 .endif
 
@@ -110,7 +112,9 @@ CFLAGS+=	-msoft-float
 CFLAGS+=	-march=i386
 CFLAGS.gcc+=	-mpreferred-stack-boundary=2
 .endif
-
+.if ${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 0
+CFLAGS+=	-fPIC -mno-red-zone
+.endif
 
 .if ${MACHINE_CPUARCH} == "arm"
 # Do not generate movt/movw, because the relocation fixup for them does not
@@ -122,6 +126,7 @@ CFLAGS.clang+=	-mllvm -arm-use-movt=0
 CFLAGS.clang+=	-mno-movt
 .endif
 CFLAGS.clang+=  -mfpu=none
+CFLAGS+=	-fPIC
 .endif
 
 # The boot loader build uses dd status=none, where possible, for reproducible
@@ -131,6 +136,10 @@ CFLAGS.clang+=  -mfpu=none
 DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
 DD=dd ${DD_NOSTATUS}
 
+.if ${MACHINE_CPUARCH} == "mips"
+CFLAGS+=	-G0 -fno-pic -mno-abicalls
+.endif
+
 .if ${MK_LOADER_FORCE_LE} != "no"
 .if ${MACHINE_ARCH} == "powerpc64"
 CFLAGS+=	-mlittle-endian

stand/fdt/Makefile

@@ -17,5 +17,4 @@ CFLAGS+=	-I${SYSDIR}/contrib/libfdt/ -I${LDRSRC}
 
 CFLAGS+=	-Wformat -Wall
 
-.include <bsd.stand.mk>
 .include <bsd.lib.mk>

stand/ficl/Makefile

@@ -12,7 +12,6 @@ BASE_SRCS=	dict.c ficl.c fileaccess.c float.c loader.c math64.c \
 SRCS=		${BASE_SRCS} sysdep.c softcore.c
 CLEANFILES+=	softcore.c testmain testmain.o
 
-.include <bsd.stand.mk>
 .ifmake testmain
 CFLAGS+=	-DTESTMAIN -D_TESTMAIN
 SRCS+=		testmain.c

stand/geli/Makefile

@@ -34,5 +34,4 @@ SRCS+=		geliboot_crypto.c g_eli_hmac.c g_eli_key.c g_eli_key_cache.c pkcs5v2.c
 .PATH:		${SYSDIR}/opencrypto
 SRCS+=		xform_aes_xts.c
 
-.include <bsd.stand.mk>
 .include <bsd.lib.mk>

stand/libsa/Makefile

@@ -151,5 +151,4 @@ CFLAGS.bzipfs.c+= -I${SRCTOP}/contrib/bzip2
 .PATH: ${SYSDIR}/libkern
 SRCS+=  explicit_bzero.c
 
-.include <bsd.stand.mk>
 .include <bsd.lib.mk>

stand/mips/uboot/Makefile

@@ -53,5 +53,4 @@ ubldr: ${OBJS} ldscript.abs ${.CURDIR}/ldscript.${MACHINE_CPUARCH} ${DPADD}
 
 CLEANFILES+=	ldscript.abs ldscript.pie ubldr ubldr.pie ubldr.bin
 
-.include <bsd.stand.mk>
 .include <bsd.prog.mk>

stand/uboot/fdt/Makefile

@@ -18,5 +18,4 @@ CFLAGS+=	-I${FDTSRC}
 # Pick up the bootstrap header for some interface items
 CFLAGS+=	-I${LDRSRC}
 
-.include <bsd.stand.mk>
 .include <bsd.lib.mk>

stand/uboot/lib/Makefile

@@ -24,5 +24,4 @@ CFLAGS+=	-I${LDRSRC}
 CFLAGS+= -DDISK_DEBUG
 .endif
 
-.include <bsd.stand.mk>
 .include <bsd.lib.mk>

stand/zfs/Makefile

@@ -17,5 +17,4 @@ CFLAGS+=	-I${SYSDIR}/crypto/skein
 
 CFLAGS+=	-Wformat -Wall
 
-.include <bsd.stand.mk>
 .include <bsd.lib.mk>