07b202a847
get rid of testing explicitly for clang (using ${CC:T:Mclang}) in
individual Makefiles.
Instead, use the following extra macros, for use with clang:
- NO_WERROR.clang (disables -Werror)
- NO_WCAST_ALIGN.clang (disables -Wcast-align)
- NO_WFORMAT.clang (disables -Wformat and friends)
- CLANG_NO_IAS (disables integrated assembler)
- CLANG_OPT_SMALL (adds flags for extra small size optimizations)
As a side effect, this enables setting CC/CXX/CPP in src.conf instead of
make.conf! For clang, use the following:
CC=clang
CXX=clang++
CPP=clang-cpp
MFC after: 2 weeks
114 lines
2.7 KiB
Makefile
114 lines
2.7 KiB
Makefile
# $FreeBSD$
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.include <bsd.own.mk>
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FILES= boot boot1 boot2
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NM?= nm
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# A value of 0x80 enables LBA support.
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BOOT_BOOT1_FLAGS?= 0x80
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BOOT_COMCONSOLE_PORT?= 0x3f8
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BOOT_COMCONSOLE_SPEED?= 9600
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B2SIOFMT?= 0x3
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REL1= 0x700
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ORG1= 0x7c00
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ORG2= 0x2000
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# Decide level of UFS support.
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BOOT2_UFS?= UFS1_AND_UFS2
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#BOOT2_UFS?= UFS2_ONLY
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#BOOT2_UFS?= UFS1_ONLY
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CFLAGS= -Os \
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-fno-guess-branch-probability \
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-fomit-frame-pointer \
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-fno-unit-at-a-time \
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-mno-align-long-strings \
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-mrtd \
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-mregparm=3 \
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-DUSE_XREAD \
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-D${BOOT2_UFS} \
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-DFLAGS=${BOOT_BOOT1_FLAGS} \
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-DSIOPRT=${BOOT_COMCONSOLE_PORT} \
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-DSIOFMT=${B2SIOFMT} \
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-DSIOSPD=${BOOT_COMCONSOLE_SPEED} \
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-I${.CURDIR}/../../common \
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-I${.CURDIR}/../btx/lib -I. \
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-Wall -Waggregate-return -Wbad-function-cast -Wcast-align \
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-Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
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-Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings \
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-Winline --param max-inline-insns-single=100 \
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${CLANG_OPT_SMALL}
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LDFLAGS=-static -N --gc-sections
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# Pick up ../Makefile.inc early.
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.include <bsd.init.mk>
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CLEANFILES= boot
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boot: boot1 boot2
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cat boot1 boot2 > boot
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CLEANFILES+= boot1 boot1.out boot1.o
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boot1: boot1.out
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objcopy -S -O binary boot1.out ${.TARGET}
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boot1.out: boot1.o
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${LD} ${LDFLAGS} -e start -Ttext ${ORG1} -o ${.TARGET} boot1.o
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CLEANFILES+= boot2 boot2.ld boot2.ldr boot2.bin boot2.out boot2.o \
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boot2.s boot2.s.tmp boot2.h sio.o
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boot2: boot2.ld
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@set -- `ls -l boot2.ld`; x=$$((7680-$$5)); \
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echo "$$x bytes available"; test $$x -ge 0
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dd if=boot2.ld of=${.TARGET} obs=7680 conv=osync
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boot2.ld: boot2.ldr boot2.bin ${BTXKERN}
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btxld -v -E ${ORG2} -f bin -b ${BTXKERN} -l boot2.ldr \
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-o ${.TARGET} -P 1 boot2.bin
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boot2.ldr:
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dd if=/dev/zero of=${.TARGET} bs=512 count=1
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boot2.bin: boot2.out
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objcopy -S -O binary boot2.out ${.TARGET}
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boot2.out: ${BTXCRT} boot2.o sio.o
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${LD} ${LDFLAGS} -Ttext ${ORG2} -o ${.TARGET} ${.ALLSRC}
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boot2.o: boot2.s
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${CC} ${ACFLAGS} -c boot2.s
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SRCS= boot2.c boot2.h
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boot2.s: boot2.c boot2.h ${.CURDIR}/../../common/ufsread.c
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${CC} ${CFLAGS} -S -o boot2.s.tmp ${.CURDIR}/boot2.c
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sed -e '/align/d' -e '/nop/d' < boot2.s.tmp > boot2.s
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rm -f boot2.s.tmp
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boot2.h: boot1.out
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${NM} -t d ${.ALLSRC} | awk '/([0-9])+ T xread/ \
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{ x = $$1 - ORG1; \
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printf("#define XREADORG %#x\n", REL1 + x) }' \
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ORG1=`printf "%d" ${ORG1}` \
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REL1=`printf "%d" ${REL1}` > ${.TARGET}
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.if ${MACHINE_CPUARCH} == "amd64"
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beforedepend boot2.s: machine
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CLEANFILES+= machine
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machine:
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ln -sf ${.CURDIR}/../../../i386/include machine
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.endif
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.include <bsd.prog.mk>
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# XXX: clang integrated-as doesn't grok .codeNN directives yet
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CFLAGS.boot1.S= ${CLANG_NO_IAS}
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CFLAGS+= ${CFLAGS.${.IMPSRC:T}}
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