d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
2b519b1707
freebsd-dev/lib/libc/Makefile

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

222 lines
6.8 KiB
Makefile
Raw Normal View History

BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
# @(#)Makefile 8.2 (Berkeley) 2/3/94
$Id$ -> $FreeBSD$
1999-08-28 00:22:10 +00:00
# $FreeBSD$
Reimplementation of world/kernel build options. For details, see: http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html The src.conf(5) manpage is to follow in a few days. Brought to you by: imp, jhb, kris, phk, ru (all bugs are mine)
2006-03-17 18:54:44 +00:00
Remove libc, librtld_db, libthr packages, and further increase the constraints on what needs to be installed in a specific to maintain consistency during upgrades. Create a new clibs package containing libraries that are needed as a bare minimum for consistency. With much help and input from: kib Sponsored by: The FreeBSD Foundation
2016-02-05 21:01:08 +00:00
PACKAGE= clibs
Revert r284417 it is not necessary anymore
2015-06-15 19:28:07 +00:00
SHLIBDIR?= /lib
Provide alternate default for SHLIBDIR before bsd.own.mk does this. Reported by: phk
2006-03-18 11:01:06 +00:00
Use src.opts.mk in preference to bsd.own.mk except where we need stuff from the latter.
2014-05-06 04:22:01 +00:00
.include <src.opts.mk>
Reimplementation of world/kernel build options. For details, see: http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html The src.conf(5) manpage is to follow in a few days. Brought to you by: imp, jhb, kris, phk, ru (all bugs are mine)
2006-03-17 18:54:44 +00:00
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
LIBC_SRCTOP?= ${.CURDIR}
Allow ABIs to provide their own LIBC_ARCH in a more generic way. As a side effect, this fixes the build on powerpc64. Reviewed by: imp
2010-08-25 20:48:24 +00:00
# Pick the current architecture directory for libc. In general, this is
# named MACHINE_CPUARCH, but some ABIs are different enough to require
# their own libc, so allow a directory named MACHINE_ARCH to override this.
[PowerPC64LE] Use a shared LIBC_ARCH for powerpc64le. Given that we have converted to ELFv2 for BE already, endianness is the only difference between the two ARCHs. As such, there is no need to differentiate LIBC_ARCH between the two. Combining them like this lets us avoid needing to have two copies of several bits for no good reason. Sponsored by: Tag1 Consulting, Inc.
2020-09-23 00:21:51 +00:00
.if exists(${LIBC_SRCTOP}/${MACHINE_ARCH:S/powerpc64le/powerpc64/})
LIBC_ARCH=${MACHINE_ARCH:S/powerpc64le/powerpc64/}
Powerpc is special here. powerpc and powerpc64 use different ABIs, so their implementations aren't in the same files. Introduce LIBC_ARCH and use that in preference to MACHINE_CPUARCH. Tested by amd64 and powerpc64 builds (thanks nathanw@)
2010-08-24 20:54:43 +00:00
.else
Fix an accidental sed...
2010-08-24 21:28:34 +00:00
LIBC_ARCH=${MACHINE_CPUARCH}
Powerpc is special here. powerpc and powerpc64 use different ABIs, so their implementations aren't in the same files. Introduce LIBC_ARCH and use that in preference to MACHINE_CPUARCH. Tested by amd64 and powerpc64 builds (thanks nathanw@)
2010-08-24 20:54:43 +00:00
.endif
Update comments. We uniformly use __FBSDID in libc now.
2002-03-23 20:08:00 +00:00
# All library objects contain FreeBSD revision strings by default; they may be
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
# excluded as a space-saving measure. To produce a library that does
Embellish the comment.
2002-03-26 23:08:42 +00:00
# not contain these strings, add -DSTRIP_FBSDID (see <sys/cdefs.h>) to CFLAGS
Fixed English error in previous commit. Fixed some older English errors. Removed a redundant clause.
2003-12-11 09:53:25 +00:00
# below. Note: there are no IDs for syscall stubs whose sources are generated.
Strip __RCSID() and __SCCSID() strings by default when building libc. This is in preparation for changes to update the various ID strings in libc's source. CSRG ID strings will use __SCCSID() and there are some existing uses of __RCSID() for NetBSD ID strings already. These are generally under either an explicit #if 0 or an #ifdef LIBC_SCCS so are off by default and this change preserves that existing behavior. Differential Revision: https://reviews.freebsd.org/D15830
2018-07-03 16:45:49 +00:00
# To include legacy CSRG SCCS ID strings, remove -DNO__SCCSID from CFLAGS.
# To include RCS ID strings from other BSD projects, remove -DNO__RCSID from CFLAGS.
CFLAGS+=-DNO__SCCSID -DNO__RCSID
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
LIB=c
Bump library majro version for gethostbyaddr(3).
2006-05-21 15:15:21 +00:00
SHLIB_MAJOR= 7
libssp_nonshared: use only on i386 and ppc libssp_nonshared.a defines one symbol, __stack_chk_fail_local. This is used only on i386 and powerpc; other archs emit calls directly to __stack_chk_fail. Simplify linking on other archs by omitting it. PR: 242941 [exp-run]
2020-02-05 20:08:01 +00:00
.if ${MK_SSP} != "no" && \
powerpc: enable initial-exec TLS Summary: Use initial-exec, like other architectures. While here, switch MACHINE_ARCH in lib/libc/Makefile to LIBC_ARCH and consistently use powerpc. Subscribers: imp, #contributor_reviews_base Differential Revision: https://reviews.freebsd.org/D34315 Reviewed by: luporl MFC after: 2 weeks
2022-02-18 13:22:14 +00:00
(${LIBC_ARCH} == "i386" || ${LIBC_ARCH:Mpowerpc*} != "")
Turn libc.so into an ld script rather than a symlink pointing to the real shared object and libssp_nonshared.a. This was the last showstopper that prevented from enabling SSP for ports by default. portmgr@ performed a buildworld which showed no significant breakage with this patch. Details: On i386 for PIC objects, gcc uses the __stack_chk_fail_local hidden symbol instead of calling __stack_chk_fail directly [1]. This happen not only with our gcc-4.2.1 but also with the latest gcc-4.8. If you want the very nasty details, see [2]. OTOH the problem doesn't exist on other architectures. It also doesn't exist with Clang as the latter will somehow manage to create the function in the object file at compile time (contrary to only referencing it through a symbol that will be brought in at link time). In a perfect world, when an object file is compiled with -fstack-protector, it will be linked into a binary or a DSO with this same flag as well, so GCC will add libssp_nonshared.a to the linker command-line. Unfortunately, we don't control softwares in ports and we may have such broken DSO. This is the whole point of this patch. You can reproduce the problem on i386 by compiling a source file into an object file with "-fstack-protector-all -fPIE" and linking it into a binary without "-fstack-protector". This ld script automatically proposes libssp_nonshared.a along with the real libc DSO to the linker. It is important to understand that the object file contained in this library will be pulled in the resulting binary _only if_ the linker notices one of its symbols is needed (i.e. one of the SSP symbol is missing). A theorical performance impact could be when compiling, but my testing showed less than 0.1% of difference. [1] For 32-bit code gcc saves the PIC register setup by using __stack_chk_fail_local hidden function instead of calling __stack_chk_fail directly. See comment line 19460 in: src/contrib/gcc/config/i386/i386.c [2] When compiling a source file to an object file, if you use something which is external to the compilation unit, GCC doesn't know yet if this symbol will be inside or outside the DSO. So it expects the worst case and routes the symbol through the GOT, which means additional space and extra relocation for rtld(1). Declaring a symbol has hidden tells GCC to use the optimal route (no GOT), but on the other hand this means the symbol has to be provided in the same DSO (namely libssp_nonshared.a). On i386, GCC actually uses an hidden symbol for SSP in PIC objects to save PIC register setup, as said in [1]. PR: ports/138228 PR: ports/168010 Reviewed by: kib, kan
2013-06-12 21:12:05 +00:00
SHLIB_LDSCRIPT=libc.ldscript
Add different libc ldscript: the one without libssp -- we don't have it when MK_SSP==no. This fixes compilation on MIPS. Reviewed by: imp Sponsored by: DARPA, AFRL Sponsored by: HEIF5 Differential Revision: https://reviews.freebsd.org/D8212
2016-10-12 13:19:21 +00:00
.else
SHLIB_LDSCRIPT=libc_nossp.ldscript
.endif
Make libxnet.so a symlink to libc.so. This makes `-lxnet` a no-op, as POSIX requires for the c99 compiler. (In fact, our c99(1) already ignores -lxnet; but our make(1) doesn't set ${CC} correctly, and our cc(1) treats xnet like any other library.) Reviewed by: kib
2015-12-25 11:29:18 +00:00
SHLIB_LDSCRIPT_LINKS=libxnet.so
libc is now WARNS=2 clean with the exception of the gdtoa bits (which are now not built with warnings enabled at all).
2004-01-19 16:16:53 +00:00
WARNS?= 2
Replace dot-dot relative pathing with SRCTOP-relative paths where possible This reduces build output, need for recalculating paths, and makes it clearer which paths are relative to what areas in the source tree. The change in performance over a locally mounted UFS filesystem was negligible in my testing, but this may more positively impact other filesystems like NFS. LIBC_SRCTOP was left alone so Juniper (and other users) can continue to manipulate lib/libc/Makefile (and other Makefile.inc's under lib/libc) as include Makefiles with custom options. Discussed with: marcel, sjg MFC after: 1 week Reviewed by: emaste Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D9207
2017-01-20 03:23:24 +00:00
CFLAGS+=-I${LIBC_SRCTOP}/include -I${SRCTOP}/include
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
CFLAGS+=-I${LIBC_SRCTOP}/${LIBC_ARCH}
Disable NLS catalog use in libc if built with WITHOUT_NLS option. Functions affected: strerror, strsignal, gai_strerror.
2012-05-21 08:10:42 +00:00
.if ${MK_NLS} != "no"
- Reenable Native Language Support in libc. This feature was disabled due to possible breakages in the catalog handling code. Since then, that code has been replaced by the secure code from NetBSD but NLS in libc remained turned off. Tests have shown that the feature is stable and working so we can now turn it on again. - Add several new catalog files: - ca_ES.ISO8859-1 - de_DE.ISO8859-1 - el_GR.ISO8859-7 (by manolis@ and keramida@) - es_ES.ISO8859-1 (kern/123179, by carvay@) - fi_FI.ISO8859-1 - fr_FR.ISO8859-1 (kern/78756, by thierry@) - hu_HU.ISO8859-2 (by gabor@) - it_IT.ISO8859-15 - nl_NL.ISO8859-1 (corrections by rene@) - no_NO.ISO8859-1 - mn_MN.UTF-8 (by ganbold@) - sk_SK.ISO8859-2 - sv_SE.ISO8859-1 (The catalogs without explicit source has been obtained from NetBSD.) Approved by: attilio
2009-03-13 10:40:38 +00:00
CFLAGS+=-DNLS
Disable NLS catalog use in libc if built with WITHOUT_NLS option. Functions affected: strerror, strsignal, gai_strerror.
2012-05-21 08:10:42 +00:00
.endif
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
CLEANFILES+=tags
For variables that are only checked with defined(), don't provide any fake value.
2004-10-24 15:33:08 +00:00
INSTALL_PIC_ARCHIVE=
Created static libc PIC/no-SSP library to be used by rtld. Rtld is not compatible with SSP, and since we link libc_pic.a to rtld to have the basic support like memory and string copy functions, we have to both carefully limit libc use, and to provide the ssp support shims. This change makes the libc use in rtld more straighforward but still limited, and allows to remove the shims, to be done in the next commit. Submitted by: Luis Pires Reviewed by: bdrewery, brooks Differential revision: https://reviews.freebsd.org/D15283
2018-05-09 10:28:24 +00:00
BUILD_NOSSP_PIC_ARCHIVE=
For variables that are only checked with defined(), don't provide any fake value.
2004-10-24 15:33:08 +00:00
PRECIOUSLIB=
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
To support stack unwinding for cancellation points, add -fexceptions flag for them, two functions _pthread_cancel_enter and _pthread_cancel_leave are added to let thread enter and leave a cancellation point, it also makes it possible that other functions can be cancellation points in libraries without having to be rewritten in libthr.
2010-09-25 01:57:47 +00:00
.ifndef NO_THREAD_STACK_UNWIND
CANCELPOINTS_CFLAGS=-fexceptions
CFLAGS+=${CANCELPOINTS_CFLAGS}
.endif
libc: Use the initial-exec TLS model This permits more efficient accesses of thread-local variables, which are heavily used at least by jemalloc and locale-aware code. Note that on amd64 and i386, jemalloc's thread-local variables already have their TLS model overridden by defining JEMALLOC_TLS_MODEL. For now the change is applied only to tested platforms, but should in principle be enabled everywhere. PR: 255840 Suggested by: jrtc27 Reviewed by: kib MFC after: 2 months Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D31070
2021-07-16 02:35:28 +00:00
# Use a more efficient TLS model for libc since we can reasonably assume that
# it will be loaded during program startup.
.if ${LIBC_ARCH} == "aarch64" || ${LIBC_ARCH} == "amd64" || \
powerpc: enable initial-exec TLS Summary: Use initial-exec, like other architectures. While here, switch MACHINE_ARCH in lib/libc/Makefile to LIBC_ARCH and consistently use powerpc. Subscribers: imp, #contributor_reviews_base Differential Revision: https://reviews.freebsd.org/D34315 Reviewed by: luporl MFC after: 2 weeks
2022-02-18 13:22:14 +00:00
${LIBC_ARCH} == "i386" || ${LIBC_ARCH} == "riscv" || \
${LIBC_ARCH:Mpowerpc*} != ""
libc: Use the initial-exec TLS model This permits more efficient accesses of thread-local variables, which are heavily used at least by jemalloc and locale-aware code. Note that on amd64 and i386, jemalloc's thread-local variables already have their TLS model overridden by defining JEMALLOC_TLS_MODEL. For now the change is applied only to tested platforms, but should in principle be enabled everywhere. PR: 255840 Suggested by: jrtc27 Reviewed by: kib MFC after: 2 months Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D31070
2021-07-16 02:35:28 +00:00
CFLAGS+= -ftls-model=initial-exec
.endif
Make sure GCC will not try to link libc with itself.
2007-05-19 04:32:56 +00:00
#
Replace LIBGCC by LIBCOMPILER_RT. We now use libcompiler_rt on all platforms now. Instead of referring directly to -lgcc and LIBGCC, use -lcompiler_rt and LIBCOMPILER_RT.
2014-01-18 14:22:56 +00:00
# Link with static libcompiler_rt.a.
Make sure GCC will not try to link libc with itself.
2007-05-19 04:32:56 +00:00
#
Use LDADD to add -lgcc to the end of linker command line. Using LDFLAGS puts it before library's object files, making the whole constuct useless.
2007-05-19 16:38:39 +00:00
LDFLAGS+= -nodefaultlibs
Convert libraries to use LIBADD While here reduce a bit overlinking
2014-11-25 11:07:26 +00:00
LIBADD+= compiler_rt
Don't link against libssp if MK_SSP is set to no. Note that this still misses a proper dependency at this time.
2012-05-19 17:49:20 +00:00
libssp_nonshared: use only on i386 and ppc libssp_nonshared.a defines one symbol, __stack_chk_fail_local. This is used only on i386 and powerpc; other archs emit calls directly to __stack_chk_fail. Simplify linking on other archs by omitting it. PR: 242941 [exp-run]
2020-02-05 20:08:01 +00:00
.if ${MK_SSP} != "no" && \
powerpc: enable initial-exec TLS Summary: Use initial-exec, like other architectures. While here, switch MACHINE_ARCH in lib/libc/Makefile to LIBC_ARCH and consistently use powerpc. Subscribers: imp, #contributor_reviews_base Differential Revision: https://reviews.freebsd.org/D34315 Reviewed by: luporl MFC after: 2 weeks
2022-02-18 13:22:14 +00:00
(${LIBC_ARCH} == "i386" || ${LIBC_ARCH:Mpowerpc*} != "")
Convert libraries to use LIBADD While here reduce a bit overlinking
2014-11-25 11:07:26 +00:00
LIBADD+= ssp_nonshared
Don't link against libssp if MK_SSP is set to no. Note that this still misses a proper dependency at this time.
2012-05-19 17:49:20 +00:00
.endif
Make sure GCC will not try to link libc with itself.
2007-05-19 04:32:56 +00:00
Move the iconv wrapper source from libc_nonshared to libc/iconv so that it is all in the one place again. Rename libc/iconv/iconv.c to bsd_iconv.c. Compile the wrappers into libc.a so that WITHOUT_DYNAMICROOT works again. Discussed with: kib (and partly stolen from his patch)
2013-11-25 20:17:55 +00:00
# Extras that live in either libc.a or libc_nonshared.a
LIBC_NONSHARED_SRCS=
libc: include rtld.h into static implementations of rtld interface and resolve naming conficts Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D29623
2021-04-05 03:41:46 +00:00
RTLD_ELF_DIR=${SRCTOP}/libexec/rtld-elf
.if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH:S/powerpc64le/powerpc64/})
RTLD_ARCH= ${MACHINE_ARCH:S/powerpc64le/powerpc64/}
.else
RTLD_ARCH= ${MACHINE_CPUARCH}
.endif
RTLD_HDRS= -I${RTLD_ELF_DIR}/${RTLD_ARCH} -I${RTLD_ELF_DIR}
libc_r wasn't so tied to libc for 22 months.
2002-11-18 09:50:57 +00:00
# Define (empty) variables so that make doesn't give substitution
# errors if the included makefiles don't change these:
MDSRCS=
MISRCS=
MDASM=
MIASM=
NOASM=
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/${LIBC_ARCH}/Makefile.inc"
csu: move common code to libc Why? Most trivial point, it shaves around 600 bytes from the dynamic binaries on amd64. Less trivial, the removed code is no longer part of the ABI, and we can ship updates to it with libc updates. Right now most of the csu is linked into the binaries and require us to do somewhat tricky ABI compat when it needs to change. For instance, the init_array change would be much simpler and does not require note tagging if we have init calling code in libc. This could be improved more, by splitting dynamic and static initialization. For instance, &_DYNAMIC tests can be removed then. Such change, nonetheless, would require building libc three times. I left this for later, after this change stabilizes, if ever. Reviewed by: markj Discussed with: jrtc27 (some objections, see the review), imp Tested by: markj (aarch64) Sponsored by: The FreeBSD Foundation MFC after: 3 weeks Differential revision: https://reviews.freebsd.org/D37220
2022-10-30 23:47:44 +00:00
.include "${LIBC_SRCTOP}/csu/Makefile.inc"
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/db/Makefile.inc"
.include "${LIBC_SRCTOP}/compat-43/Makefile.inc"
.include "${LIBC_SRCTOP}/gdtoa/Makefile.inc"
.include "${LIBC_SRCTOP}/gen/Makefile.inc"
.include "${LIBC_SRCTOP}/gmon/Makefile.inc"
Add the BSD-licensed Citrus iconv to the base system with default off setting. It can be built by setting the WITH_ICONV knob. While this knob is unset, the library part, the binaries, the header file and the metadata files will not be built or installed so it makes no impact on the system if left turned off. This work is based on the iconv implementation in NetBSD but a great number of improvements and feature additions have been included: - Some utilities have been added. There is a conversion table generator, which can compare conversion tables to reference data generated by GNU libiconv. This helps ensuring conversion compatibility. - UTF-16 surrogate support and some endianness issues have been fixed. - The rather chaotic Makefiles to build metadata have been refactored and cleaned up, now it is easy to read and it is also easier to add support for new encodings. - A bunch of new encodings and encoding aliases have been added. - Support for 1->2, 1->3 and 1->4 mappings, which is needed for transliterating with flying accents as GNU does, like "u. - Lots of warnings have been fixed, the major part of the code is now WARNS=6 clean. - New section 1 and section 5 manual pages have been added. - Some GNU-specific calls have been implemented: iconvlist(), iconvctl(), iconv_canonicalize(), iconv_open_into() - Support for GNU's //IGNORE suffix has been added. - The "-" argument for stdin is now recognized in iconv(1) as per POSIX. - The Big5 conversion module has been fixed. - The iconv.h header files is supposed to be compatible with the GNU version, i.e. sources should build with base iconv.h and GNU libiconv. It also includes a macro magic to deal with the char ** and const char ** incompatibility. - GNU compatibility: "" or "char" means the current local encoding in use - Various cleanups and style(9) fixes. Approved by: delphij (mentor) Obtained from: The NetBSD Project Sponsored by: Google Summer of Code 2009
2011-02-25 00:04:39 +00:00
.if ${MK_ICONV} != "no"
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/iconv/Makefile.inc"
Add the BSD-licensed Citrus iconv to the base system with default off setting. It can be built by setting the WITH_ICONV knob. While this knob is unset, the library part, the binaries, the header file and the metadata files will not be built or installed so it makes no impact on the system if left turned off. This work is based on the iconv implementation in NetBSD but a great number of improvements and feature additions have been included: - Some utilities have been added. There is a conversion table generator, which can compare conversion tables to reference data generated by GNU libiconv. This helps ensuring conversion compatibility. - UTF-16 surrogate support and some endianness issues have been fixed. - The rather chaotic Makefiles to build metadata have been refactored and cleaned up, now it is easy to read and it is also easier to add support for new encodings. - A bunch of new encodings and encoding aliases have been added. - Support for 1->2, 1->3 and 1->4 mappings, which is needed for transliterating with flying accents as GNU does, like "u. - Lots of warnings have been fixed, the major part of the code is now WARNS=6 clean. - New section 1 and section 5 manual pages have been added. - Some GNU-specific calls have been implemented: iconvlist(), iconvctl(), iconv_canonicalize(), iconv_open_into() - Support for GNU's //IGNORE suffix has been added. - The "-" argument for stdin is now recognized in iconv(1) as per POSIX. - The Big5 conversion module has been fixed. - The iconv.h header files is supposed to be compatible with the GNU version, i.e. sources should build with base iconv.h and GNU libiconv. It also includes a macro magic to deal with the char ** and const char ** incompatibility. - GNU compatibility: "" or "char" means the current local encoding in use - Various cleanups and style(9) fixes. Approved by: delphij (mentor) Obtained from: The NetBSD Project Sponsored by: Google Summer of Code 2009
2011-02-25 00:04:39 +00:00
.endif
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/inet/Makefile.inc"
.include "${LIBC_SRCTOP}/isc/Makefile.inc"
.include "${LIBC_SRCTOP}/locale/Makefile.inc"
Bring the md5 functions into libc for internal use only. It is required to support ID randomization for our stub resolver.
2014-08-12 12:25:56 +00:00
.include "${LIBC_SRCTOP}/md/Makefile.inc"
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/nameser/Makefile.inc"
.include "${LIBC_SRCTOP}/net/Makefile.inc"
.include "${LIBC_SRCTOP}/nls/Makefile.inc"
.include "${LIBC_SRCTOP}/posix1e/Makefile.inc"
libc: Include quad support on long32 ABIs Rather than not including it on all 64-bit platforms, just include it on 32-bit ones. Reviewed by: imp, jhb Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D36422
2022-10-05 16:26:31 +00:00
.if ${MACHINE_ABI:Mlong32}
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/quad/Makefile.inc"
libc_r wasn't so tied to libc for 22 months.
2002-11-18 09:50:57 +00:00
.endif
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/regex/Makefile.inc"
.include "${LIBC_SRCTOP}/resolv/Makefile.inc"
.include "${LIBC_SRCTOP}/stdio/Makefile.inc"
.include "${LIBC_SRCTOP}/stdlib/Makefile.inc"
.include "${LIBC_SRCTOP}/stdlib/jemalloc/Makefile.inc"
.include "${LIBC_SRCTOP}/stdtime/Makefile.inc"
.include "${LIBC_SRCTOP}/string/Makefile.inc"
.include "${LIBC_SRCTOP}/sys/Makefile.inc"
Move the stack protector to a new "secure" directory As part of the code refactoring to support FORTIFY_SOURCE we want a new subdirectory "secure" to keep the files related to security. Move the stack protector functions to this new directory. No functional change. Differential Review: https://reviews.freebsd.org/D3333
2015-08-14 03:03:13 +00:00
.include "${LIBC_SRCTOP}/secure/Makefile.inc"
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/rpc/Makefile.inc"
.include "${LIBC_SRCTOP}/uuid/Makefile.inc"
.include "${LIBC_SRCTOP}/xdr/Makefile.inc"
Remove a few more references to riscv64sf. Fixes: 1ca12bd927d7 Remove the riscv64sf architecture.
2023-04-20 18:00:46 +00:00
.if (${LIBC_ARCH} == "arm" && (defined(CPUTYPE) && ${CPUTYPE:M*soft*}))
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/softfloat/Makefile.inc"
Import the FreeBSD/arm libc bits. Obtained from: NetBSD
2004-05-14 12:04:31 +00:00
.endif
Implement userspace gettimeofday(2) with HPET timecounter. Right now, userspace (fast) gettimeofday(2) on x86 only works for RDTSC. For older machines, like Core2, where RDTSC is not C2/C3 invariant, and which fall to HPET hardware, this means that the call has both the penalty of the syscall and of the uncached hw behind the QPI or PCIe connection to the sought bridge. Nothing can me done against the access latency, but the syscall overhead can be removed. System already provides mappable /dev/hpetX devices, which gives straight access to the HPET registers page. Add yet another algorithm to the x86 'vdso' timehands. Libc is updated to handle both RDTSC and HPET. For HPET, the index of the hpet device to mmap is passed from kernel to userspace, index might be changed and libc invalidates its mapping as needed. Remove cpu_fill_vdso_timehands() KPI, instead require that timecounters which can be used from userspace, to provide tc_fill_vdso_timehands{,32}() methods. Merge i386 and amd64 libc/<arch>/sys/__vdso_gettc.c into one source file in the new libc/x86/sys location. __vdso_gettc() internal interface is changed to move timecounter algorithm detection into the MD code. Measurements show that RDTSC even with the syscall overhead is faster than userspace HPET access. But still, userspace HPET is three-four times faster than syscall HPET on several Core2 and SandyBridge machines. Tested by: Howard Su <howard0su@gmail.com> Sponsored by: The FreeBSD Foundation MFC after: 1 month Differential revision: https://reviews.freebsd.org/D7473
2016-08-17 09:52:09 +00:00
.if ${LIBC_ARCH} == "i386" || ${LIBC_ARCH} == "amd64"
.include "${LIBC_SRCTOP}/x86/sys/Makefile.inc"
Unify i386 and amd64 getcontextx.c, and use ifuncs while there. In particular, use ifuncs for __getcontextx_size(), also calculate the size of the extended save area in resolver. Same for __fillcontextx2(). Sponsored by: The FreeBSD Foundation MFC after: 1 week
2019-02-14 14:02:33 +00:00
.include "${LIBC_SRCTOP}/x86/gen/Makefile.inc"
Implement userspace gettimeofday(2) with HPET timecounter. Right now, userspace (fast) gettimeofday(2) on x86 only works for RDTSC. For older machines, like Core2, where RDTSC is not C2/C3 invariant, and which fall to HPET hardware, this means that the call has both the penalty of the syscall and of the uncached hw behind the QPI or PCIe connection to the sought bridge. Nothing can me done against the access latency, but the syscall overhead can be removed. System already provides mappable /dev/hpetX devices, which gives straight access to the HPET registers page. Add yet another algorithm to the x86 'vdso' timehands. Libc is updated to handle both RDTSC and HPET. For HPET, the index of the hpet device to mmap is passed from kernel to userspace, index might be changed and libc invalidates its mapping as needed. Remove cpu_fill_vdso_timehands() KPI, instead require that timecounters which can be used from userspace, to provide tc_fill_vdso_timehands{,32}() methods. Merge i386 and amd64 libc/<arch>/sys/__vdso_gettc.c into one source file in the new libc/x86/sys location. __vdso_gettc() internal interface is changed to move timecounter algorithm detection into the MD code. Measurements show that RDTSC even with the syscall overhead is faster than userspace HPET access. But still, userspace HPET is three-four times faster than syscall HPET on several Core2 and SandyBridge machines. Tested by: Howard Su <howard0su@gmail.com> Sponsored by: The FreeBSD Foundation MFC after: 1 month Differential revision: https://reviews.freebsd.org/D7473
2016-08-17 09:52:09 +00:00
.endif
Reimplementation of world/kernel build options. For details, see: http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html The src.conf(5) manpage is to follow in a few days. Brought to you by: imp, jhb, kris, phk, ru (all bugs are mine)
2006-03-17 18:54:44 +00:00
.if ${MK_NIS} != "no"
libc_r wasn't so tied to libc for 22 months.
2002-11-18 09:50:57 +00:00
CFLAGS+= -DYP
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/yp/Makefile.inc"
libc_r wasn't so tied to libc for 22 months.
2002-11-18 09:50:57 +00:00
.endif
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
.include "${LIBC_SRCTOP}/capability/Makefile.inc"
Reimplementation of world/kernel build options. For details, see: http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html The src.conf(5) manpage is to follow in a few days. Brought to you by: imp, jhb, kris, phk, ru (all bugs are mine)
2006-03-17 18:54:44 +00:00
.if ${MK_HESIOD} != "no"
libc_r wasn't so tied to libc for 22 months.
2002-11-18 09:50:57 +00:00
CFLAGS+= -DHESIOD
.endif
Reimplementation of world/kernel build options. For details, see: http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html The src.conf(5) manpage is to follow in a few days. Brought to you by: imp, jhb, kris, phk, ru (all bugs are mine)
2006-03-17 18:54:44 +00:00
.if ${MK_FP_LIBC} == "no"
Add option NO_FP_LIBC, which disables floating-point support in *printf() and *scanf(). Currently, this reduces the size of libc.so by 9K on i386. But the real savings are for static binaries that use *printf() or *scanf() but not strtod(); with an FP-disabled libc, these binaries will not depend on the gdtoa routines, making each binary about 22K smaller.
2004-05-02 10:55:07 +00:00
CFLAGS+= -DNO_FLOATING_POINT
.endif
- Extend the nsswitch to support Services, Protocols and Rpc databases. - Make nsswitch support caching. Submitted by: Michael Bushkov <bushman__at__rsu.ru> Sponsored by: Google Summer of Code 2005
2006-04-28 12:03:38 +00:00
.if ${MK_NS_CACHING} != "no"
CFLAGS+= -DNS_CACHING
.endif
Disable RPC exponential back-off for FreeBSD.org systems (IE. hidden behind _FREEFALL_CONFIG). This is done mainly to make NIS even more resistant to packet loss. This is not enabled by default for "normal" FreeBSD since it might cause the server providing the RPC service to be hit heavily with RPC traffic in case of problems. freefall.FreeBSD.org and hub.FreeBSD.org have been running with a patch similar to this for a couple of weeks. MFC after: 1 week Discussed with: peter
2007-03-04 12:25:03 +00:00
.if defined(_FREEFALL_CONFIG)
CFLAGS+=-D_FREEFALL_CONFIG
.endif
libc_r wasn't so tied to libc for 22 months.
2002-11-18 09:50:57 +00:00
Move the iconv wrapper source from libc_nonshared to libc/iconv so that it is all in the one place again. Rename libc/iconv/iconv.c to bsd_iconv.c. Compile the wrappers into libc.a so that WITHOUT_DYNAMICROOT works again. Discussed with: kib (and partly stolen from his patch)
2013-11-25 20:17:55 +00:00
STATICOBJS+=${LIBC_NONSHARED_SRCS:S/.c$/.o/}
Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP} if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.
2014-03-04 02:19:39 +00:00
VERSION_DEF=${LIBC_SRCTOP}/Versions.def
Allow bsd.lib.mk to generate the symbol version map.
2006-03-16 15:16:23 +00:00
SYMBOL_MAPS=${SYM_MAPS}
CFLAGS+= -DSYMBOL_VERSIONING
libc_r wasn't so tied to libc for 22 months.
2002-11-18 09:50:57 +00:00
# If there are no machine dependent sources, append all the
# machine-independent sources:
src.conf: Introduce WITHOUT_MACHDEP knob. Summary: This knob can be used to make buildsystem prefer generic C implentations of various functions, instead of machine-specific assembler ones. Test Plan: `make buildworld` on amd64 Reviewed by: imp, emaste Differential Revision: https://reviews.freebsd.org/D36076 MFC after: 3 days
2022-08-08 15:16:00 +00:00
.if empty(MDSRCS) || ${MK_MACHDEP_OPTIMIZATIONS} == no
libc_r wasn't so tied to libc for 22 months.
2002-11-18 09:50:57 +00:00
SRCS+= ${MISRCS}
.else
# Append machine-dependent sources, then append machine-independent sources
# for which there is no machine-dependent variant.
SRCS+= ${MDSRCS}
.for _src in ${MISRCS}
.if ${MDSRCS:R:M${_src:R}} == ""
SRCS+= ${_src}
.endif
.endfor
.endif
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
KQSRCS= adddi3.c anddi3.c ashldi3.c ashrdi3.c cmpdi2.c divdi3.c iordi3.c \
lshldi3.c lshrdi3.c moddi3.c muldi3.c negdi2.c notdi2.c qdivrem.c \
subdi3.c ucmpdi2.c udivdi3.c umoddi3.c xordi3.c
Merge index() and strchr() together. As I looked through the C library, I noticed the FreeBSD MIPS port has a hand-written version of index(). This is nice, if it weren't for the fact that most applications call strchr() instead. Also, on the other architectures index() and strchr() are identical, meaning we have two identical pieces of code in the C library and statically linked applications. Solve this by naming the actual file strchr.[cS] and let it use __strong_reference()/STRONG_ALIAS() to provide the index() routine. Do the same for rindex()/strrchr(). This seems to make the C libraries and static binaries slightly smaller, but this reduction in size seems negligible.
2012-01-03 07:14:01 +00:00
KSRCS= bcmp.c ffs.c ffsl.c fls.c flsl.c mcount.c strcat.c strchr.c \
strcmp.c strcpy.c strlen.c strncpy.c strrchr.c
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
Powerpc is special here. powerpc and powerpc64 use different ABIs, so their implementations aren't in the same files. Introduce LIBC_ARCH and use that in preference to MACHINE_CPUARCH. Tested by amd64 and powerpc64 builds (thanks nathanw@)
2010-08-24 20:54:43 +00:00
libkern: libkern.gen libkern.${LIBC_ARCH}
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
libkern.gen: ${KQSRCS} ${KSRCS}
Add a ${CP} alias for copying files in the build. Some users build FreeBSD as non-root in Perforce workspaces. By default, Perforce sets files read-only unless they're explicitly being edited. As a result, the -f argument must be used to cp in order to override the read-only flag when copying source files to object directories. Bare use of 'cp' should be avoided in the future. Update all current users of 'cp' in the src tree. Reviewed by: emaste MFC after: 1 week Sponsored by: Spectra Logic
2015-01-16 21:39:08 +00:00
${CP} ${LIBC_SRCTOP}/quad/quad.h ${.ALLSRC} ${DESTDIR}/sys/libkern
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
Powerpc is special here. powerpc and powerpc64 use different ABIs, so their implementations aren't in the same files. Introduce LIBC_ARCH and use that in preference to MACHINE_CPUARCH. Tested by amd64 and powerpc64 builds (thanks nathanw@)
2010-08-24 20:54:43 +00:00
libkern.${LIBC_ARCH}:: ${KMSRCS}
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
.if defined(KMSRCS) && !empty(KMSRCS)
Add a ${CP} alias for copying files in the build. Some users build FreeBSD as non-root in Perforce workspaces. By default, Perforce sets files read-only unless they're explicitly being edited. As a result, the -f argument must be used to cp in order to override the read-only flag when copying source files to object directories. Bare use of 'cp' should be avoided in the future. Update all current users of 'cp' in the src tree. Reviewed by: emaste MFC after: 1 week Sponsored by: Spectra Logic
2015-01-16 21:39:08 +00:00
${CP} ${.ALLSRC} ${DESTDIR}/sys/libkern/${LIBC_ARCH}
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
.endif
Style. MFC after: 3 days
2010-08-23 15:18:35 +00:00
Add HAS_TESTS to all Makefiles that are currently using the `SUBDIR.${MK_TESTS}+= tests` idiom. This is a follow up to r321912.
2017-08-02 08:50:42 +00:00
HAS_TESTS=
Convert traditional ${MK_TESTS} conditional idiom for including test directories to SUBDIR.${MK_TESTS} idiom This is being done to pave the way for future work (and homogenity) in ^/projects/make-check-sandbox . No functional change intended. MFC after: 1 weeks
2017-08-02 08:35:51 +00:00
SUBDIR.${MK_TESTS}+= tests
Add reachover Makefiles for contrib/netbsd-tests/lib/libc; this adds approximately 500 new testcases Various TODOs have been sprinkled around the Makefiles for items that even need to be ported (missing features), testcases have issues with building/linking, or issues at runtime. A variant of this code has been tested extensively on amd64 and i386 10-STABLE/11-CURRENT for several months without issue. It builds on other architectures, but the code will remain off until I have prove it works on virtual hardware or real hardware on other architectures In collaboration with: pho, Casey Peel <casey.peel@isilon.com> Sponsored by: EMC / Isilon Storage Division
2014-11-04 00:56:25 +00:00
BSD 4.4 Lite Lib Sources
1994-05-27 05:00:24 +00:00
.include <bsd.lib.mk>
Replaced an ugly hack to selectively disable warnings in contributed sources with just a hack made possible by bsd.sys.mk,v 1.33. This is better because it just nulls out the warning flags rather than adding gcc(1) specific -w option to CFLAGS.
2004-01-11 10:42:47 +00:00
Move libc linker ifunc test to build target only Targets like 'cleandir' must not depend on toolchain capabilities. Reported by: delphij, Shawn Webb Approved by: re (kib) Sponsored by: The FreeBSD Foundation
2018-09-24 13:42:46 +00:00
.if (${LIBC_ARCH} == amd64 || ${LIBC_ARCH} == i386) && \
${.TARGETS:Mall} == all && \
defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == ""
Revert that!
2020-07-19 23:56:19 +00:00
.error ${LIBC_ARCH} libc requires linker ifunc support
Move libc linker ifunc test to build target only Targets like 'cleandir' must not depend on toolchain capabilities. Reported by: delphij, Shawn Webb Approved by: re (kib) Sponsored by: The FreeBSD Foundation
2018-09-24 13:42:46 +00:00
.endif
Sync FreeBSD's bmake branch with Juniper's internal bmake branch. Requested by: Simon Gerraty <sjg@juniper.net>
2012-08-22 19:25:57 +00:00
.if !defined(_SKIP_BUILD)
# We need libutil.h, get it directly to avoid
# recording a build dependency
Replace .CURDIR with SRCTOP to respect LIBC_SRCTOP feature.
2016-01-25 19:11:34 +00:00
CFLAGS+= -I${SRCTOP}/lib/libutil
Sync FreeBSD's bmake branch with Juniper's internal bmake branch. Requested by: Simon Gerraty <sjg@juniper.net>
2012-08-22 19:25:57 +00:00
# Same issue with libm
Replace .CURDIR with SRCTOP to respect LIBC_SRCTOP feature.
2016-01-25 19:11:34 +00:00
MSUN_ARCH_SUBDIR != ${MAKE} -B -C ${SRCTOP}/lib/msun -V ARCH_SUBDIR
Sync FreeBSD's bmake branch with Juniper's internal bmake branch. Requested by: Simon Gerraty <sjg@juniper.net>
2012-08-22 19:25:57 +00:00
# unfortunately msun/src contains both private and public headers
Remove excess whitespace
2016-01-27 00:24:24 +00:00
CFLAGS+= -I${SRCTOP}/lib/msun/${MSUN_ARCH_SUBDIR}
We need an extra -I from lib/msun and we need to supress dependency on it - cyclic.
2013-10-13 00:29:14 +00:00
.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
Replace .CURDIR with SRCTOP to respect LIBC_SRCTOP feature.
2016-01-25 19:11:34 +00:00
CFLAGS+= -I${SRCTOP}/lib/msun/x86
We need an extra -I from lib/msun and we need to supress dependency on it - cyclic.
2013-10-13 00:29:14 +00:00
.endif
Replace .CURDIR with SRCTOP to respect LIBC_SRCTOP feature.
2016-01-25 19:11:34 +00:00
CFLAGS+= -I${SRCTOP}/lib/msun/src
We need an extra -I from lib/msun and we need to supress dependency on it - cyclic.
2013-10-13 00:29:14 +00:00
# and we do not want to record a dependency on msun
.if ${.MAKE.LEVEL} > 0
GENDIRDEPS_FILTER+= N${RELDIR:H}/msun
.endif
Sync FreeBSD's bmake branch with Juniper's internal bmake branch. Requested by: Simon Gerraty <sjg@juniper.net>
2012-08-22 19:25:57 +00:00
.endif
Replaced an ugly hack to selectively disable warnings in contributed sources with just a hack made possible by bsd.sys.mk,v 1.33. This is better because it just nulls out the warning flags rather than adding gcc(1) specific -w option to CFLAGS.
2004-01-11 10:42:47 +00:00
# Disable warnings in contributed sources.
Disable all warnings when building gdtoa. This allows building libc with clang. The general idea is that the vendor will not accept our compilation patches and so disabling the warnings is the best way to go as it makes future imports bearable. Submitted by: Dimitry Andric <dimitry at andric.com> Discussed with: das
2010-08-01 12:35:01 +00:00
CWARNFLAGS:= ${.IMPSRC:Ngdtoa_*.c:C/^.+$/${CWARNFLAGS}/:C/^$/-w/}
Enable GCC stack protection (aka Propolice) for userland: - It is opt-out for now so as to give it maximum testing, but it may be turned opt-in for stable branches depending on the consensus. You can turn it off with WITHOUT_SSP. - WITHOUT_SSP was previously used to disable the build of GNU libssp. It is harmless to steal the knob as SSP symbols have been provided by libc for a long time, GNU libssp should not have been much used. - SSP is disabled in a few corners such as system bootstrap programs (sys/boot), process bootstrap code (rtld, csu) and SSP symbols themselves. - It should be safe to use -fstack-protector-all to build world, however libc will be automatically downgraded to -fstack-protector because it breaks rtld otherwise. - This option is unavailable on ia64. Enable GCC stack protection (aka Propolice) for kernel: - It is opt-out for now so as to give it maximum testing. - Do not compile your kernel with -fstack-protector-all, it won't work. Submitted by: Jeremie Le Hen <jeremie@le-hen.org>
2008-06-25 21:33:28 +00:00
# Disable stack protection for SSP symbols.
SSP_CFLAGS:= ${.IMPSRC:N*/stack_protector.c:C/^.+$/${SSP_CFLAGS}/}
To support stack unwinding for cancellation points, add -fexceptions flag for them, two functions _pthread_cancel_enter and _pthread_cancel_leave are added to let thread enter and leave a cancellation point, it also makes it possible that other functions can be cancellation points in libraries without having to be rewritten in libthr.
2010-09-25 01:57:47 +00:00
# Generate stack unwinding tables for cancellation points
CANCELPOINTS_CFLAGS:= ${.IMPSRC:Mcancelpoints_*:C/^.+$/${CANCELPOINTS_CFLAGS}/:C/^$//}
Reference in New Issue Copy Permalink