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f929939c1a
This is a direct port of HardenedBSD's hardened/10-stable/master's Position-Independent Executable (PIE) support. This code is only applicable to base and does not get applied to ports. The only change made was to enable PIE for amd64 and i386 by default. All other architectures have it disabled (due to lack of hardware with which to test). Signed-off-by: Shawn Webb <shawn.webb@hardenedbsd.org>
179 lines
5.2 KiB
Makefile
179 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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# 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(${.CURDIR}/${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${.CURDIR}/include -I${.CURDIR}/../../include
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CFLAGS+=-I${.CURDIR}/${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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# Only link with static libgcc.a (no libgcc_eh.a).
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#
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DPADD+= ${LIBGCC}
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LDFLAGS+= -nodefaultlibs
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LDADD+= -lgcc
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.if ${MK_SSP} != "no"
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DPADD+= ${LIBSSP_NONSHARED}
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LDADD+= -lssp_nonshared
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.endif
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# Extras that live in either libc.a or libc_nonshared.a
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LIBC_NONSHARED_SRCS=
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# Define (empty) variables so that make doesn't give substitution
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# errors if the included makefiles don't change these:
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MDSRCS=
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MISRCS=
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MDASM=
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MIASM=
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NOASM=
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.include "${.CURDIR}/${LIBC_ARCH}/Makefile.inc"
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.include "${.CURDIR}/db/Makefile.inc"
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.include "${.CURDIR}/compat-43/Makefile.inc"
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.include "${.CURDIR}/gdtoa/Makefile.inc"
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.include "${.CURDIR}/gen/Makefile.inc"
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.include "${.CURDIR}/gmon/Makefile.inc"
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.if ${MK_ICONV} != "no"
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.include "${.CURDIR}/iconv/Makefile.inc"
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.endif
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.include "${.CURDIR}/inet/Makefile.inc"
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.include "${.CURDIR}/isc/Makefile.inc"
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.include "${.CURDIR}/locale/Makefile.inc"
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.include "${.CURDIR}/md/Makefile.inc"
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.include "${.CURDIR}/nameser/Makefile.inc"
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.include "${.CURDIR}/net/Makefile.inc"
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.include "${.CURDIR}/nls/Makefile.inc"
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.include "${.CURDIR}/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 "${.CURDIR}/quad/Makefile.inc"
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.endif
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.include "${.CURDIR}/regex/Makefile.inc"
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.include "${.CURDIR}/resolv/Makefile.inc"
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.include "${.CURDIR}/stdio/Makefile.inc"
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.include "${.CURDIR}/stdlib/Makefile.inc"
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.include "${.CURDIR}/stdlib/jemalloc/Makefile.inc"
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.include "${.CURDIR}/stdtime/Makefile.inc"
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.include "${.CURDIR}/string/Makefile.inc"
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.include "${.CURDIR}/sys/Makefile.inc"
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.include "${.CURDIR}/rpc/Makefile.inc"
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.include "${.CURDIR}/uuid/Makefile.inc"
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.include "${.CURDIR}/xdr/Makefile.inc"
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.if ${LIBC_ARCH} == "arm" || ${LIBC_ARCH} == "mips"
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.include "${.CURDIR}/softfloat/Makefile.inc"
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.endif
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.if ${MK_NIS} != "no"
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CFLAGS+= -DYP
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.include "${.CURDIR}/yp/Makefile.inc"
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.endif
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.include "${.CURDIR}/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$/.o/}
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VERSION_DEF=${.CURDIR}/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 ${.CURDIR}/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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.if !defined(WITHOUT_SYSCALL_COMPAT)
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CFLAGS+=-DSYSCALL_COMPAT
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.endif
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.if ${MK_TESTS} != "no"
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SUBDIR+= tests
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.endif
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NOPIE= yes
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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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