73279d4113
This targets the existing ARMv6 and ARMv7 SoCs that contain a VFP unit. This is an optional coprocessors may not be present in all devices, however it appears to be in all current SoCs we support. armv6hf targets the VFP variant of the ARM EABI and our copy of gcc is too old to support this. Because of this there are a number of WITH/WITHOUT options that are unsupported and must be left as the default value. The options and their required value are: * WITH_ARM_EABI * WITHOUT_GCC * WITHOUT_GNUCXX In addition, without an external toolchain, the following need to be left as their default: * WITH_CLANG * WITH_CLANG_IS_CC As there is a different method of passing float and double values to functions the ABI is incompatible with existing armv6 binaries. To use this a full rebuild of world is required. Because no floating point values are passed into the kernel an armv6 kernel with VFP enabled will work with an armv6hf userland and vice versa.
172 lines
5.2 KiB
Makefile
172 lines
5.2 KiB
Makefile
# @(#)Makefile 8.2 (Berkeley) 2/3/94
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# $FreeBSD$
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SHLIBDIR?= /lib
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.include <bsd.own.mk>
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LIBC_SRCTOP?= ${.CURDIR}
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# Pick the current architecture directory for libc. In general, this is
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# named MACHINE_CPUARCH, but some ABIs are different enough to require
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# their own libc, so allow a directory named MACHINE_ARCH to override this.
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.if exists(${LIBC_SRCTOP}/${MACHINE_ARCH})
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LIBC_ARCH=${MACHINE_ARCH}
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.else
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LIBC_ARCH=${MACHINE_CPUARCH}
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.endif
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# All library objects contain FreeBSD revision strings by default; they may be
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# excluded as a space-saving measure. To produce a library that does
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# not contain these strings, add -DSTRIP_FBSDID (see <sys/cdefs.h>) to CFLAGS
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# below. Note: there are no IDs for syscall stubs whose sources are generated.
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# To include legacy CSRG sccsid strings, add -DLIBC_SCCS and -DSYSLIBC_SCCS
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# to CFLAGS below. -DSYSLIBC_SCCS affects just the system call stubs.
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LIB=c
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SHLIB_MAJOR= 7
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SHLIB_LDSCRIPT=libc.ldscript
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WARNS?= 2
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CFLAGS+=-I${LIBC_SRCTOP}/include -I${LIBC_SRCTOP}/../../include
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CFLAGS+=-I${LIBC_SRCTOP}/${LIBC_ARCH}
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.if ${MK_NLS} != "no"
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CFLAGS+=-DNLS
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.endif
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CLEANFILES+=tags
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INSTALL_PIC_ARCHIVE=
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PRECIOUSLIB=
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.ifndef NO_THREAD_STACK_UNWIND
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CANCELPOINTS_CFLAGS=-fexceptions
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CFLAGS+=${CANCELPOINTS_CFLAGS}
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.endif
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#
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# Link with static libcompiler_rt.a.
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#
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DPADD+= ${LIBCOMPILER_RT}
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LDFLAGS+= -nodefaultlibs
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LDADD+= -lcompiler_rt
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.if ${MK_SSP} != "no"
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LDADD+= -lssp_nonshared
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.endif
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# Extras that live in either libc.a or libc_nonshared.a
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LIBC_NONSHARED_SRCS=
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# Define (empty) variables so that make doesn't give substitution
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# errors if the included makefiles don't change these:
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MDSRCS=
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MISRCS=
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MDASM=
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MIASM=
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NOASM=
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.include "${LIBC_SRCTOP}/${LIBC_ARCH}/Makefile.inc"
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.include "${LIBC_SRCTOP}/db/Makefile.inc"
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.include "${LIBC_SRCTOP}/compat-43/Makefile.inc"
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.include "${LIBC_SRCTOP}/gdtoa/Makefile.inc"
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.include "${LIBC_SRCTOP}/gen/Makefile.inc"
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.include "${LIBC_SRCTOP}/gmon/Makefile.inc"
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.if ${MK_ICONV} != "no"
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.include "${LIBC_SRCTOP}/iconv/Makefile.inc"
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.endif
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.include "${LIBC_SRCTOP}/inet/Makefile.inc"
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.include "${LIBC_SRCTOP}/isc/Makefile.inc"
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.include "${LIBC_SRCTOP}/locale/Makefile.inc"
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.include "${LIBC_SRCTOP}/nameser/Makefile.inc"
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.include "${LIBC_SRCTOP}/net/Makefile.inc"
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.include "${LIBC_SRCTOP}/nls/Makefile.inc"
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.include "${LIBC_SRCTOP}/posix1e/Makefile.inc"
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.if ${LIBC_ARCH} != "amd64" && \
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${LIBC_ARCH} != "ia64" && \
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${LIBC_ARCH} != "powerpc64" && \
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${LIBC_ARCH} != "sparc64" && \
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${MACHINE_ARCH:Mmipsn32*} == "" && \
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${MACHINE_ARCH:Mmips64*} == ""
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.include "${LIBC_SRCTOP}/quad/Makefile.inc"
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.endif
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.include "${LIBC_SRCTOP}/regex/Makefile.inc"
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.include "${LIBC_SRCTOP}/resolv/Makefile.inc"
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.include "${LIBC_SRCTOP}/stdio/Makefile.inc"
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.include "${LIBC_SRCTOP}/stdlib/Makefile.inc"
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.include "${LIBC_SRCTOP}/stdlib/jemalloc/Makefile.inc"
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.include "${LIBC_SRCTOP}/stdtime/Makefile.inc"
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.include "${LIBC_SRCTOP}/string/Makefile.inc"
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.include "${LIBC_SRCTOP}/sys/Makefile.inc"
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.include "${LIBC_SRCTOP}/rpc/Makefile.inc"
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.include "${LIBC_SRCTOP}/uuid/Makefile.inc"
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.include "${LIBC_SRCTOP}/xdr/Makefile.inc"
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.if (${LIBC_ARCH} == "arm" && ${MACHINE_ARCH} != "armv6hf") ||\
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${LIBC_ARCH} == "mips"
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.include "${LIBC_SRCTOP}/softfloat/Makefile.inc"
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.endif
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.if ${MK_NIS} != "no"
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CFLAGS+= -DYP
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.include "${LIBC_SRCTOP}/yp/Makefile.inc"
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.endif
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.include "${LIBC_SRCTOP}/capability/Makefile.inc"
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.if ${MK_HESIOD} != "no"
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CFLAGS+= -DHESIOD
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.endif
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.if ${MK_FP_LIBC} == "no"
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CFLAGS+= -DNO_FLOATING_POINT
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.endif
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.if ${MK_NS_CACHING} != "no"
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CFLAGS+= -DNS_CACHING
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.endif
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.if defined(_FREEFALL_CONFIG)
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CFLAGS+=-D_FREEFALL_CONFIG
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.endif
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STATICOBJS+=${LIBC_NONSHARED_SRCS:S/.c$/.o/}
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VERSION_DEF=${LIBC_SRCTOP}/Versions.def
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SYMBOL_MAPS=${SYM_MAPS}
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CFLAGS+= -DSYMBOL_VERSIONING
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# If there are no machine dependent sources, append all the
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# machine-independent sources:
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.if empty(MDSRCS)
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SRCS+= ${MISRCS}
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.else
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# Append machine-dependent sources, then append machine-independent sources
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# for which there is no machine-dependent variant.
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SRCS+= ${MDSRCS}
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.for _src in ${MISRCS}
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.if ${MDSRCS:R:M${_src:R}} == ""
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SRCS+= ${_src}
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.endif
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.endfor
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.endif
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KQSRCS= adddi3.c anddi3.c ashldi3.c ashrdi3.c cmpdi2.c divdi3.c iordi3.c \
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lshldi3.c lshrdi3.c moddi3.c muldi3.c negdi2.c notdi2.c qdivrem.c \
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subdi3.c ucmpdi2.c udivdi3.c umoddi3.c xordi3.c
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KSRCS= bcmp.c ffs.c ffsl.c fls.c flsl.c mcount.c strcat.c strchr.c \
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strcmp.c strcpy.c strlen.c strncpy.c strrchr.c
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libkern: libkern.gen libkern.${LIBC_ARCH}
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libkern.gen: ${KQSRCS} ${KSRCS}
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cp -p ${LIBC_SRCTOP}/quad/quad.h ${.ALLSRC} ${DESTDIR}/sys/libkern
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libkern.${LIBC_ARCH}:: ${KMSRCS}
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.if defined(KMSRCS) && !empty(KMSRCS)
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cp -p ${.ALLSRC} ${DESTDIR}/sys/libkern/${LIBC_ARCH}
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.endif
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.include <bsd.lib.mk>
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# Disable warnings in contributed sources.
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CWARNFLAGS:= ${.IMPSRC:Ngdtoa_*.c:C/^.+$/${CWARNFLAGS}/:C/^$/-w/}
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# XXX For now, we don't allow libc to be compiled with
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# -fstack-protector-all because it breaks rtld. We may want to make a librtld
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# in the future to circumvent this.
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SSP_CFLAGS:= ${SSP_CFLAGS:S/^-fstack-protector-all$/-fstack-protector/}
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# Disable stack protection for SSP symbols.
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SSP_CFLAGS:= ${.IMPSRC:N*/stack_protector.c:C/^.+$/${SSP_CFLAGS}/}
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# Generate stack unwinding tables for cancellation points
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CANCELPOINTS_CFLAGS:= ${.IMPSRC:Mcancelpoints_*:C/^.+$/${CANCELPOINTS_CFLAGS}/:C/^$//}
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