Enji Cooper ca8478f6a9 self_reloc.c: Pass -Wno-error=maybe-uninitialized to gcc versions greater than 4.2.1
self_reloc.c doesn't initialize `rel` in all cases in the C code, however, the value
might be initialized properly on the stack in the assembly code.

For right now (because this doesn't seem to be breaking anything and my initializing
the stack value could break something since it's called from assembly code) disable
the warning for self_reloc.c. More investigation should be done to determine the
appropriate response to this warning (either intialize the value or find a smarter
way to deal with the warning).

A long MFC timeout is being set for this change to allow a better solution for the
issue to be developed in that time period.

MFC after:	2 months
Reported by:	Jenkins (FreeBSD-head-amd64-gcc job)
Tested with:	amd64-gcc-6.3.0 (devel/amd64-xtoolchain-gcc)
Sponsored by:	Dell EMC Isilon
2017-03-28 23:56:02 +00:00

162 lines
4.0 KiB
Makefile

# $FreeBSD$
.include <src.opts.mk>
FILES= ubldr ubldr.bin
NEWVERSWHAT= "U-Boot loader" ${MACHINE_ARCH}
BINDIR?= /boot
INSTALLFLAGS= -b
WARNS?= 1
# Address at which ubldr will be loaded.
# This varies for different boards and SOCs.
UBLDR_LOADADDR?= 0x1000000
# Architecture-specific loader code
SRCS= start.S conf.c self_reloc.c vers.c
.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} > 40201
CWARNFLAGS.self_reloc.c+= -Wno-error=maybe-uninitialized
.endif
.if !defined(LOADER_NO_DISK_SUPPORT)
LOADER_DISK_SUPPORT?= yes
.else
LOADER_DISK_SUPPORT= no
.endif
LOADER_UFS_SUPPORT?= yes
LOADER_CD9660_SUPPORT?= no
LOADER_EXT2FS_SUPPORT?= no
.if ${MK_NAND} != "no"
LOADER_NANDFS_SUPPORT?= yes
.else
LOADER_NANDFS_SUPPORT?= no
.endif
LOADER_NET_SUPPORT?= yes
LOADER_NFS_SUPPORT?= yes
LOADER_TFTP_SUPPORT?= no
LOADER_GZIP_SUPPORT?= no
LOADER_BZIP2_SUPPORT?= no
.if ${MK_FDT} != "no"
LOADER_FDT_SUPPORT= yes
.else
LOADER_FDT_SUPPORT= no
.endif
.if ${LOADER_DISK_SUPPORT} == "yes"
CFLAGS+= -DLOADER_DISK_SUPPORT
.endif
.if ${LOADER_UFS_SUPPORT} == "yes"
CFLAGS+= -DLOADER_UFS_SUPPORT
.endif
.if ${LOADER_CD9660_SUPPORT} == "yes"
CFLAGS+= -DLOADER_CD9660_SUPPORT
.endif
.if ${LOADER_EXT2FS_SUPPORT} == "yes"
CFLAGS+= -DLOADER_EXT2FS_SUPPORT
.endif
.if ${LOADER_NANDFS_SUPPORT} == "yes"
CFLAGS+= -DLOADER_NANDFS_SUPPORT
.endif
.if ${LOADER_GZIP_SUPPORT} == "yes"
CFLAGS+= -DLOADER_GZIP_SUPPORT
.endif
.if ${LOADER_BZIP2_SUPPORT} == "yes"
CFLAGS+= -DLOADER_BZIP2_SUPPORT
.endif
.if ${LOADER_NET_SUPPORT} == "yes"
CFLAGS+= -DLOADER_NET_SUPPORT
.endif
.if ${LOADER_NFS_SUPPORT} == "yes"
CFLAGS+= -DLOADER_NFS_SUPPORT
.endif
.if ${LOADER_TFTP_SUPPORT} == "yes"
CFLAGS+= -DLOADER_TFTP_SUPPORT
.endif
.if ${LOADER_FDT_SUPPORT} == "yes"
CFLAGS+= -I${.CURDIR}/../../fdt
CFLAGS+= -I${.OBJDIR}/../../fdt
CFLAGS+= -DLOADER_FDT_SUPPORT
LIBUBOOT_FDT= ${.OBJDIR}/../../uboot/fdt/libuboot_fdt.a
LIBFDT= ${.OBJDIR}/../../fdt/libfdt.a
.endif
.if ${MK_FORTH} != "no"
# Enable BootForth
BOOT_FORTH= yes
CFLAGS+= -DBOOT_FORTH -I${.CURDIR}/../../ficl
CFLAGS+= -I${.CURDIR}/../../ficl/arm
LIBFICL= ${.OBJDIR}/../../ficl/libficl.a
.endif
# Always add MI sources
.PATH: ${.CURDIR}/../../common
.include "${.CURDIR}/../../common/Makefile.inc"
CFLAGS+= -I${.CURDIR}/../../common
CFLAGS+= -I.
CLEANFILES+= loader.help
CFLAGS+= -ffreestanding -msoft-float
LDFLAGS= -nostdlib -static -T ${.CURDIR}/ldscript.${MACHINE_CPUARCH}
# Pull in common loader code
.PATH: ${.CURDIR}/../../uboot/common
.include "${.CURDIR}/../../uboot/common/Makefile.inc"
CFLAGS+= -I${.CURDIR}/../../uboot/common
# U-Boot standalone support library
LIBUBOOT= ${.OBJDIR}/../../uboot/lib/libuboot.a
CFLAGS+= -I${.CURDIR}/../../uboot/lib
CFLAGS+= -I${.OBJDIR}/../../uboot/lib
# where to get libstand from
CFLAGS+= -I${.CURDIR}/../../../../lib/libstand/
CFLAGS+= -fPIC
# clang doesn't understand %D as a specifier to printf
NO_WERROR.clang=
DPADD= ${LIBFICL} ${LIBUBOOT} ${LIBFDT} ${LIBUBOOT_FDT} ${LIBSTAND}
LDADD= ${LIBFICL} ${LIBUBOOT} ${LIBFDT} ${LIBUBOOT_FDT} -lstand
OBJS+= ${SRCS:N*.h:R:S/$/.o/g}
loader.help: help.common help.uboot ${.CURDIR}/../../fdt/help.fdt
cat ${.ALLSRC} | \
awk -f ${.CURDIR}/../../common/merge_help.awk > ${.TARGET}
ldscript.abs:
echo "UBLDR_LOADADDR = ${UBLDR_LOADADDR};" >${.TARGET}
ldscript.pie:
echo "UBLDR_LOADADDR = 0;" >${.TARGET}
ubldr: ${OBJS} ldscript.abs ${.CURDIR}/ldscript.${MACHINE_CPUARCH} ${DPADD}
${CC} ${CFLAGS} -T ldscript.abs ${LDFLAGS} \
-o ${.TARGET} ${OBJS} ${LDADD}
ubldr.pie: ${OBJS} ldscript.pie ${.CURDIR}/ldscript.${MACHINE_CPUARCH} ${DPADD}
${CC} ${CFLAGS} -T ldscript.pie ${LDFLAGS} -pie -Wl,-Bsymbolic \
-o ${.TARGET} ${OBJS} ${LDADD}
ubldr.bin: ubldr.pie
${OBJCOPY} -S -O binary ubldr.pie ${.TARGET}
CLEANFILES+= ldscript.abs ldscript.pie ubldr ubldr.pie ubldr.bin
.if !defined(LOADER_ONLY)
.PATH: ${.CURDIR}/../../forth
.include "${.CURDIR}/../../forth/Makefile.inc"
# Install loader.rc.
FILES+= loader.rc
# Put sample menu.rc on disk but don't enable it by default.
FILES+= menu.rc
FILESNAME_menu.rc= menu.rc.sample
.endif
.include <bsd.prog.mk>