d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
c40a160fd0
freebsd-dev/libexec/rtld-elf/Makefile

98 lines
2.4 KiB
Makefile
Raw Normal View History

$Id$ -> $FreeBSD$
1999-08-28 00:22:10 +00:00
# $FreeBSD$
Fixed missing DPADDs. Fixed some style bugs (some usual ones for LDADD, and misformatting of $FreeBSD$).
2000-03-27 16:11:27 +00:00
Document the whole settings needed to build a debug version of rtld. Sponsored by: The FreeBSD Foundation MFC after: 3 days
2014-08-29 10:44:58 +00:00
# Use the following command to build local debug version of dynamic
# linker:
ld-elf.so: make LD_DEBUG always functional. This causes some increase of the dynamic linker size, but benefits of avoiding compiling private copy or the linker when debugging is required. definitely worth it. The dbg() calls can be compiled out by defining LD_NO_DEBUG symbol. Sponsored by: The FreeBSD Foundation MFC after: 1 week
2019-04-14 18:04:53 +00:00
# make DEBUG_FLAGS=-g WITHOUT_TESTS=yes all
Document the whole settings needed to build a debug version of rtld. Sponsored by: The FreeBSD Foundation MFC after: 3 days
2014-08-29 10:44:58 +00:00
libcompat: build 32-bit rtld and ldd as part of "everything" Alter bsd.compat.mk to set MACHINE and MACHINE_ARCH when included directly so MD paths in Makefiles work. In the process centralize setting them in LIBCOMPATWMAKEENV. Alter .PATH and CFLAGS settings in work when the Makefile is included. While here only support LIB32 on supported platforms rather than always enabling it and requiring users of MK_LIB32 to filter based TARGET/MACHINE_ARCH. The net effect of this change is to make Makefile.libcompat only build compatability libraries. Changes relative to r354449: Correct detection of the compiler type when bsd.compat.mk is used outside Makefile.libcompat. Previously it always matched the clang case. Set LDFLAGS including the linker emulation for mips where -m32 seems to be insufficent. Reviewed by: imp, kib (origional version in r354449) Obtained from: CheriBSD (conceptually) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D22251
2019-11-07 22:58:10 +00:00
RTLD_ELF_DIR:= ${.PARSEDIR}
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>
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
Add WITH_PIE knob to build Position Independent Executables Building binaries as PIE allows the executable itself to be loaded at a random address when ASLR is enabled (not just its shared libraries). With this change PIE objects have a .pieo extension and INTERNALLIB libraries libXXX_pie.a. MK_PIE is disabled for some kerberos5 tools, Clang, and Subversion, as they explicitly reference .a libraries in their Makefiles. These can be addressed on an individual basis later. MK_PIE is also disabled for rtld-elf because it is already position-independent using bespoke Makefile rules. Currently only dynamically linked binaries will be built as PIE. Discussed with: dim Reviewed by: kib MFC after: 1 month Relnotes: Yes Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D18423
2019-02-15 22:22:38 +00:00
MK_PIE= no # Always position independent using local rules
Fix build when WITH_SSP is set explicitly. Submitted by: Jeremie Le Hen
2009-02-21 15:04:31 +00:00
MK_SSP= no
Enable symbol versioning by default. Use WITHOUT_SYMVER to disable it. Warning, after symbol versioning is enabled, going back is not easy (use WITHOUT_SYMVER at your own risk). Change the default thread library to libthr. There most likely still needs to be a version bump for at least the thread libraries. If necessary, this will happen later.
2007-05-13 14:12:40 +00:00
Move libmap.conf to libexec/rtld-elf/ This leverages CONFS to handle the config file install. Approved by: re (gjb), will (mentor) Differential Revision: https://reviews.freebsd.org/D17161
2018-09-18 00:25:00 +00:00
CONFS= libmap.conf
Add initial support for compiling a special 32 bit version of ld-elf.so.1 on 64 bit systems. Most of this involves using alternate paths, environment variables and diagnostic messages. The build glue is seperate.
2004-03-21 01:21:26 +00:00
PROG?= ld-elf.so.1
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
.if (${PROG:M*ld-elf32*} != "")
TAGS+= lib32
.endif
Rename rtld-elf/malloc.c to rtld-elf/rtld_malloc.c. Then malloc.c file name is too generic to use it for libthr.a. Sponsored by: The FreeBSD Foundation MFC after: 13 days
2019-01-30 16:28:27 +00:00
SRCS= \
Include FreeBSD ABI tag note in the ELF runtime loader. Reviewed by: kib Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D25306
2020-07-16 22:01:01 +00:00
crtbrand.S \
Rename rtld-elf/malloc.c to rtld-elf/rtld_malloc.c. Then malloc.c file name is too generic to use it for libthr.a. Sponsored by: The FreeBSD Foundation MFC after: 13 days
2019-01-30 16:28:27 +00:00
rtld_start.S \
reloc.c \
rtld.c \
rtld_lock.c \
rtld_malloc.c \
rtld_printf.c \
map_object.c \
xmalloc.c \
debug.c \
libmap.c
libcompat: build 32-bit rtld and ldd as part of "everything" Alter bsd.compat.mk to set MACHINE and MACHINE_ARCH when included directly so MD paths in Makefiles work. In the process centralize setting them in LIBCOMPATWMAKEENV. Alter .PATH and CFLAGS settings in work when the Makefile is included. While here only support LIB32 on supported platforms rather than always enabling it and requiring users of MK_LIB32 to filter based TARGET/MACHINE_ARCH. The net effect of this change is to make Makefile.libcompat only build compatability libraries. Changes relative to r354449: Correct detection of the compiler type when bsd.compat.mk is used outside Makefile.libcompat. Previously it always matched the clang case. Set LDFLAGS including the linker emulation for mips where -m32 seems to be insufficent. Reviewed by: imp, kib (origional version in r354449) Obtained from: CheriBSD (conceptually) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D22251
2019-11-07 22:58:10 +00:00
MAN?= rtld.1
Include FreeBSD ABI tag note in the ELF runtime loader. Reviewed by: kib Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D25306
2020-07-16 22:01:01 +00:00
ACFLAGS+= -DLOCORE
Follow-on to r291666: use -ffreestanding instead of -fno-builtin. Requested by: kib
2015-12-03 21:25:59 +00:00
CFLAGS+= -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding
Don't override LIB*DIR variables from src.libnames.mk. In some cases switch to the LIB*SRCDIR value. These recently were defined in r291327 and r291619. Sponsored by: EMC / Isilon Storage Division
2015-12-01 22:20:04 +00:00
CFLAGS+= -I${SRCTOP}/lib/csu/common
[PowerPC64LE] Use a shared LIBC_ARCH for powerpc64le. Given that we have converted to ELFv2 for BE already, endianness is the only difference between the two ARCHs. As such, there is no need to differentiate LIBC_ARCH between the two. Combining them like this lets us avoid needing to have two copies of several bits for no good reason. Sponsored by: Tag1 Consulting, Inc.
2020-09-23 00:21:51 +00:00
.if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH:S/powerpc64le/powerpc64/})
RTLD_ARCH= ${MACHINE_ARCH:S/powerpc64le/powerpc64/}
Make RTLD work on powerpc64 again. If there is a sub-directory named MACHINE_ARCH, use that specific one, otherwise use MACHINE_CPUARCH. Reviewed by: imp
2010-08-24 23:19:14 +00:00
.else
RTLD_ARCH= ${MACHINE_CPUARCH}
.endif
libcompat: build 32-bit rtld and ldd as part of "everything" Alter bsd.compat.mk to set MACHINE and MACHINE_ARCH when included directly so MD paths in Makefiles work. In the process centralize setting them in LIBCOMPATWMAKEENV. Alter .PATH and CFLAGS settings in work when the Makefile is included. While here only support LIB32 on supported platforms rather than always enabling it and requiring users of MK_LIB32 to filter based TARGET/MACHINE_ARCH. The net effect of this change is to make Makefile.libcompat only build compatability libraries. Changes relative to r354449: Correct detection of the compiler type when bsd.compat.mk is used outside Makefile.libcompat. Previously it always matched the clang case. Set LDFLAGS including the linker emulation for mips where -m32 seems to be insufficent. Reviewed by: imp, kib (origional version in r354449) Obtained from: CheriBSD (conceptually) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D22251
2019-11-07 22:58:10 +00:00
CFLAGS+= -I${RTLD_ELF_DIR}/${RTLD_ARCH} -I${RTLD_ELF_DIR}
rtld-elf: compile with WANRS=4 warnings other than -Wcast-align Reviewed By: kib Approved By: brooks (mentor) Differential Revision: https://reviews.freebsd.org/D17153
2018-10-29 21:08:19 +00:00
NO_WCAST_ALIGN= yes
Introduce the PRECIOUSPROG knob in bsd.prog.mk, similar to PRECIOUSLIB from bsd.lib.mk. The side effect of this is making installing the world under jail(8) possible by using another knob, NOFSCHG. Reviewed by: oliver
2004-11-03 18:01:21 +00:00
INSTALLFLAGS= -C -b
PRECIOUSPROG=
Do not change entire BINDIR, it might be needed later, just change symlink target. MFC after: 2 weeks
2012-12-04 12:51:33 +00:00
BINDIR= /libexec
Convert absolute links to relative links. Style.Makefile(9) has been ignored to produce minimal diffs. Approved by: grehan (mentor) MFC after: 1 week
2017-03-07 05:10:38 +00:00
SYMLINKS= ../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG}
libcompat: Correct rtld MLINKS Don't install duplicate ld-elf.so.1.1 and ld.so.1 links in rtld-elf32. Do install lib-elf32.so.1.1 and ldd32.1 links. Reported by: madpilot
2019-11-12 22:31:59 +00:00
MLINKS?= rtld.1 ld-elf.so.1.1 \
Advertize rtld(1) as ld.so(1) in manual pages world
2003-02-13 23:07:28 +00:00
rtld.1 ld.so.1
Add alpha support. Submitted by: John Birrell <jb@cimlogic.com.au> (with extra hacks by me) Obtained from: Probably NetBSD
1998-09-04 19:03:57 +00:00
rtld: clean up Makefile. Move all MD statements into $MACHINE_ARCH/Makefile.inc. Unconditionally apply version script to rtld, the interpreter is not functional without it for long time. Reviewed by: brooks, emaste Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D23083
2020-01-11 09:18:58 +00:00
CFLAGS+= -fpic -DPIC $(DEBUG)
Move ARM specific flags to arm/Makefile.inc Requested by: kib MFC with: r360463
2020-04-29 16:05:50 +00:00
rtld: clean up Makefile. Move all MD statements into $MACHINE_ARCH/Makefile.inc. Unconditionally apply version script to rtld, the interpreter is not functional without it for long time. Reviewed by: brooks, emaste Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D23083
2020-01-11 09:18:58 +00:00
LDFLAGS+= -shared -Wl,-Bsymbolic -Wl,-z,defs -nostdlib -e ${RTLD_ENTRY}
Reduce size of rtld by 22% by pulling in less code from libc Currently RTLD is linked against libc_nossp_pic which means that any libc symbol used in rtld can pull in a lot of depedencies. This was causing symbol such as __libc_interposing and all the pthread stubs to be included in RTLD even though they are not required. It turns out most of these dependencies can easily be avoided by providing overrides inside of rtld. This change is motivated by CHERI, where we have an experimental ABI that requires additional relocation processing to allow the use of function pointers inside of rtld. Instead of adding this self-relocation code to RTLD I attempted to remove most function pointers from RTLD and discovered that most of them came from the libc dependencies instead of being actually used inside rtld. A nice side-effect of this change is that rtld is now 22% smaller on amd64. text data bss dec hex filename 0x21eb6 0xce0 0xe60 145910 239f6 /home/alr48/ld-elf-x86.before.so.1 0x1a6ed 0x728 0xdd8 113645 1bbed /home/alr48/ld-elf-x86.after.so.1 The number of R_X86_64_RELATIVE relocations that need to be processed on startup has also gone down from 368 to 187 (almost 50% less). Reviewed By: kib Differential Revision: https://reviews.freebsd.org/D20663
2019-06-30 11:49:58 +00:00
# Pull in the dependencies that we use from libc
.include "rtld-libc/Makefile.inc"
WITHOUT_TOOLCHAIN: Fix build of rtld. MK_TOOLCHAIN==no disables building and installing of pic archives. c_pic.a is still needed for rtld though so force it to build in lib/libc and link directly to the objdir version of it for rtld. Somehow this has been broken since r148725. Sponsored by: EMC / Isilon Storage Division
2016-03-31 17:27:01 +00:00
.if ${MK_TOOLCHAIN} == "no"
LDFLAGS+= -L${LIBCDIR}
.endif
Prepare rtld for symbol versioning. Disable it by default for now.
2007-04-03 19:01:06 +00:00
Don't override LIB*DIR variables from src.libnames.mk. In some cases switch to the LIB*SRCDIR value. These recently were defined in r291327 and r291619. Sponsored by: EMC / Isilon Storage Division
2015-12-01 22:20:04 +00:00
VERSION_DEF= ${LIBCSRCDIR}/Versions.def
libcompat: build 32-bit rtld and ldd as part of "everything" Alter bsd.compat.mk to set MACHINE and MACHINE_ARCH when included directly so MD paths in Makefiles work. In the process centralize setting them in LIBCOMPATWMAKEENV. Alter .PATH and CFLAGS settings in work when the Makefile is included. While here only support LIB32 on supported platforms rather than always enabling it and requiring users of MK_LIB32 to filter based TARGET/MACHINE_ARCH. The net effect of this change is to make Makefile.libcompat only build compatability libraries. Changes relative to r354449: Correct detection of the compiler type when bsd.compat.mk is used outside Makefile.libcompat. Previously it always matched the clang case. Set LDFLAGS including the linker emulation for mips where -m32 seems to be insufficent. Reviewed by: imp, kib (origional version in r354449) Obtained from: CheriBSD (conceptually) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D22251
2019-11-07 22:58:10 +00:00
SYMBOL_MAPS= ${RTLD_ELF_DIR}/Symbol.map
Prepare rtld for symbol versioning. Disable it by default for now.
2007-04-03 19:01:06 +00:00
VERSION_MAP= Version.map
LDFLAGS+= -Wl,--version-script=${VERSION_MAP}
libcompat: build 32-bit rtld and ldd as part of "everything" Alter bsd.compat.mk to set MACHINE and MACHINE_ARCH when included directly so MD paths in Makefiles work. In the process centralize setting them in LIBCOMPATWMAKEENV. Alter .PATH and CFLAGS settings in work when the Makefile is included. While here only support LIB32 on supported platforms rather than always enabling it and requiring users of MK_LIB32 to filter based TARGET/MACHINE_ARCH. The net effect of this change is to make Makefile.libcompat only build compatability libraries. Changes relative to r354449: Correct detection of the compiler type when bsd.compat.mk is used outside Makefile.libcompat. Previously it always matched the clang case. Set LDFLAGS including the linker emulation for mips where -m32 seems to be insufficent. Reviewed by: imp, kib (origional version in r354449) Obtained from: CheriBSD (conceptually) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D22251
2019-11-07 22:58:10 +00:00
.if exists(${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map)
SYMBOL_MAPS+= ${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map
Prepare rtld for symbol versioning. Disable it by default for now.
2007-04-03 19:01:06 +00:00
.endif
Eliminate all machine-dependent code from the main source body and the Makefile, and move it down into the architecture-specific subdirectories. Eliminate an asm() statement for the i386. Make the dynamic linker work if it is built as an executable instead of as a shared library. See i386/Makefile.inc to find out how to do it. Note, this change is not enabled and it might never be enabled. But it might be useful in the future. Building the dynamic linker as an executable should make it start up faster, because it won't have any relocations. But in practice I suspect the difference is negligible.
1999-04-09 00:28:43 +00:00
libcompat: build 32-bit rtld and ldd as part of "everything" Alter bsd.compat.mk to set MACHINE and MACHINE_ARCH when included directly so MD paths in Makefiles work. In the process centralize setting them in LIBCOMPATWMAKEENV. Alter .PATH and CFLAGS settings in work when the Makefile is included. While here only support LIB32 on supported platforms rather than always enabling it and requiring users of MK_LIB32 to filter based TARGET/MACHINE_ARCH. The net effect of this change is to make Makefile.libcompat only build compatability libraries. Changes relative to r354449: Correct detection of the compiler type when bsd.compat.mk is used outside Makefile.libcompat. Previously it always matched the clang case. Set LDFLAGS including the linker emulation for mips where -m32 seems to be insufficent. Reviewed by: imp, kib (origional version in r354449) Obtained from: CheriBSD (conceptually) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D22251
2019-11-07 22:58:10 +00:00
.sinclude "${RTLD_ELF_DIR}/${RTLD_ARCH}/Makefile.inc"
rtld: clean up Makefile. Move all MD statements into $MACHINE_ARCH/Makefile.inc. Unconditionally apply version script to rtld, the interpreter is not functional without it for long time. Reviewed by: brooks, emaste Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D23083
2020-01-11 09:18:58 +00:00
RTLD_ENTRY?= .rtld_start
Import the ELF dynamic linker. This is the ElfKit version with quite a few enhancements and bug fixes. There are still some known deficiencies, but it should be adequate to get us started with ELF. Submitted by: John Polstra <jdp@polstra.com>
1998-03-07 19:24:35 +00:00
Don't forget to chflags noschg the existing binary so we can symlink over it safely. Pointed out by: yosimoto@waishi.jp
2003-08-17 18:50:56 +00:00
# Since moving rtld-elf to /libexec, we need to create a symlink.
# Fixup the existing binary that's there so we can symlink over it.
beforeinstall:
META_MODE: No need to fix the link in this case. The exists(${DESTDIR}...) check runs with DESTDIR being blank. When the target runs it does have DESTDIR=${STAGE_OBJTOP} via bsd.sys.mk. This results in the first execution warning that the symlink is missing. The second run does run fine. However, this chflags is not needed at all for META_MODE/STAGING since we never had this path being a schg file while using META_MODE. Sponsored by: EMC / Isilon Storage Division
2015-09-18 23:12:38 +00:00
.if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no"
Use absolute path for /usr/libexec/ld-elf.so.1 symlink. Requested by: kan, kib Use -h flags for chflags, so we won't remove 'schg' flag from system's /libexec/ld-elf.so.1. MFC after: 2 weeks
2012-12-04 14:36:01 +00:00
-chflags -h noschg ${DESTDIR}/usr/libexec/${PROG}
So do it like we do in usr.bin/tip/tip/Makefile. ;)
2004-11-14 22:18:31 +00:00
.endif
Don't forget to chflags noschg the existing binary so we can symlink over it safely. Pointed out by: yosimoto@waishi.jp
2003-08-17 18:50:56 +00:00
Include FreeBSD ABI tag note in the ELF runtime loader. Reviewed by: kib Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D25306
2020-07-16 22:01:01 +00:00
.PATH: ${RTLD_ELF_DIR}/${RTLD_ARCH} ${SRCTOP}/lib/csu/common
Import the ELF dynamic linker. This is the ElfKit version with quite a few enhancements and bug fixes. There are still some known deficiencies, but it should be adequate to get us started with ELF. Submitted by: John Polstra <jdp@polstra.com>
1998-03-07 19:24:35 +00:00
libcompat: build 32-bit rtld and ldd as part of "everything" Alter bsd.compat.mk to set MACHINE and MACHINE_ARCH when included directly so MD paths in Makefiles work. In the process centralize setting them in LIBCOMPATWMAKEENV. Alter .PATH and CFLAGS settings in work when the Makefile is included. While here only support LIB32 on supported platforms rather than always enabling it and requiring users of MK_LIB32 to filter based TARGET/MACHINE_ARCH. The net effect of this change is to make Makefile.libcompat only build compatability libraries. Changes relative to r354449: Correct detection of the compiler type when bsd.compat.mk is used outside Makefile.libcompat. Previously it always matched the clang case. Set LDFLAGS including the linker emulation for mips where -m32 seems to be insufficent. Reviewed by: imp, kib (origional version in r354449) Obtained from: CheriBSD (conceptually) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D22251
2019-11-07 22:58:10 +00:00
.if ${.CURDIR} == ${RTLD_ELF_DIR}
Add HAS_TESTS to all Makefiles that are currently using the `SUBDIR.${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
libcompat: build 32-bit rtld and ldd as part of "everything" Alter bsd.compat.mk to set MACHINE and MACHINE_ARCH when included directly so MD paths in Makefiles work. In the process centralize setting them in LIBCOMPATWMAKEENV. Alter .PATH and CFLAGS settings in work when the Makefile is included. While here only support LIB32 on supported platforms rather than always enabling it and requiring users of MK_LIB32 to filter based TARGET/MACHINE_ARCH. The net effect of this change is to make Makefile.libcompat only build compatability libraries. Changes relative to r354449: Correct detection of the compiler type when bsd.compat.mk is used outside Makefile.libcompat. Previously it always matched the clang case. Set LDFLAGS including the linker emulation for mips where -m32 seems to be insufficent. Reviewed by: imp, kib (origional version in r354449) Obtained from: CheriBSD (conceptually) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D22251
2019-11-07 22:58:10 +00:00
.endif
Test RTLD's new LD_LIBRARY_PATH_FDS variable. Test LD_LIBRARY_PATH_FDS by linking a binary that requires a shared library that isn't in any of the usual search paths. Ensure this fails when we don't supply LD_LIBRARY_PATH_FDS or we pass invalid information in it. Ensure it works when we pass the correct directory in various places in the variable. Approved by: rwatson (mentor) MFC after: 3 weeks Sponsored by: DARPA/AFRL
2014-06-20 17:14:59 +00:00
rtld-elf: link libcompiler_rt on all architectures Statically link rtld-elf with libcompiler_rt on all architectures so that we don't need to try to pick and choose the bits we need from it for each architecture (we now leave that to the linker). Compilers may emit calls to support functions in this library, but because of the use of the linker flag -nostdlib for rtld's special needs, the library is not linked as normal. Previously we had two different solutions. On some architectures, we were able to extract reimplementations of the necessary builtin functions from our special build of libc. On ARM, we just linked libcompiler_rt. This is motivated by the same issue as D26199 and D27665, but should be a simpler solution that will apply to all architectures. Reviewed by: arichardson, kib Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D27736
2020-12-28 08:44:25 +00:00
# Some of the required math functions (div & mod) are implemented in
# libcompiler_rt on some architectures.
LIBADD+= compiler_rt
Import the ELF dynamic linker. This is the ElfKit version with quite a few enhancements and bug fixes. There are still some known deficiencies, but it should be adequate to get us started with ELF. Submitted by: John Polstra <jdp@polstra.com>
1998-03-07 19:24:35 +00:00
.include <bsd.prog.mk>
Fix race for incrementally rebuilding VERSION_MAP. The dependency is needed in PROG_FULL since only the build of PROG_FULL is using the LDFLAGS and depending on VERSION_MAP. This was not a problem with MK_DEBUG_FILES==no since it only builds PROG. This should probably be using bsd.lib.mk instead [1] Reported by: swills, gjb Reviewed by: emaste Noted by: rgrimes [1] Sponsored by: EMC / Isilon Storage Division Approved by: re (kib)
2016-07-03 17:28:39 +00:00
${PROG_FULL}: ${VERSION_MAP}
Fix build after r291620. "don't know how to make /Versions.def. Stop" This was trying to define a target in bsd.symver.mk based on LIBCDIR which was not yet defined. Switching the order of inclusion of bsd.prog.mk and bsd.symver.mk fixes it and seems fine. Pointyhat to: bdrewery Sponsored by: EMC / Isilon Storage Division
2015-12-01 22:50:32 +00:00
.include <bsd.symver.mk>
rtld-elf: compile with WANRS=4 warnings other than -Wcast-align Reviewed By: kib Approved By: brooks (mentor) Differential Revision: https://reviews.freebsd.org/D17153
2018-10-29 21:08:19 +00:00
rtld-elf: fix more warnings to allow compiling with WARNS=6 Reviewed By: kib Approved By: brooks (mentor) Differential Revision: https://reviews.freebsd.org/D17154
2018-10-29 21:08:28 +00:00
.if ${COMPILER_TYPE} == "gcc"
# GCC warns about redeclarations even though they have __exported
# and are therefore not identical to the ones from the system headers.
CFLAGS+= -Wno-redundant-decls
.endif
Reference in New Issue Copy Permalink