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freebsd-skq/libexec/rtld-elf/Makefile

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$Id$ -> $FreeBSD$
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
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>
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
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
Fix breakage caused by alphabetically sorting SRCS: rtld_start.S must come first! The previous version made all shared binaries dump core.
2004-05-14 21:01:52 +00:00
SRCS= rtld_start.S \
Rtld links with the specially built pic static libc library to get some C runtime services, like printf(). Unfortunately, the multithread-safeness measures in the libc do not work in rtld environment. Rip the kernel printf() implementation and use it in the rtld instead of libc version. This printf does not require any shared global data and thus is mt-safe. Systematically use rtld_printf() and related functions, remove the calls to err(3). Note that stdio is still pulled from libc due to libmap implementaion using fopen(). This is safe but unoptimal, and can be changed later. Reported and tested by: pgj Diagnosed and reviewed by: kan (previous version) Approved by: re (bz)
2011-08-24 20:05:13 +00:00
reloc.c rtld.c rtld_lock.c rtld_printf.c map_object.c \
Import arm bits for rtld-elf. Obtained from: NetBSD
2004-05-14 12:15:51 +00:00
malloc.c xmalloc.c debug.c libmap.c
- Backout botched attempt to intoduce MANSECT feature. - MAN[1-9] -> MAN.
2001-03-26 14:22:12 +00:00
MAN= rtld.1
Set CSTD to gnu99. We can only use on of the gnu?9 C languages. We can't use c89 due to use of 'inline', and c99 produces bad code.
2003-06-04 05:42:04 +00:00
CSTD?= gnu99
Centralize the calculation of the top source directory. This simplifies the build of rtld with partial checkout, allowing to override only one place to reference other tree. Submitted by: bde MFC after: 2 weeks
2012-03-23 12:10:12 +00:00
TOPSRCDIR= ${.CURDIR}/../..
Allow threading libraries to register their own locking implementation in case default one provided by rtld is not suitable. Consolidate various identical MD lock implementation into a single file using appropriate machine/atomic.h. Approved by: re (scottl)
2003-05-29 22:58:26 +00:00
CFLAGS+= -Wall -DFREEBSD_ELF -DIN_RTLD
Centralize the calculation of the top source directory. This simplifies the build of rtld with partial checkout, allowing to override only one place to reference other tree. Submitted by: bde MFC after: 2 weeks
2012-03-23 12:10:12 +00:00
CFLAGS+= -I${TOPSRCDIR}/lib/csu/common
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
.if exists(${.CURDIR}/${MACHINE_ARCH})
RTLD_ARCH= ${MACHINE_ARCH}
.else
RTLD_ARCH= ${MACHINE_CPUARCH}
.endif
CFLAGS+= -I${.CURDIR}/${RTLD_ARCH} -I${.CURDIR}
RTLD support for powerpc64. A few small modifications to the Makefile and symbol map are required to support various consequences of the dot symbol scheme: - Symbols beginning with a dot are reserved, so start private symbols with an underscore. - In order to set RTLD breakpoints, gdb must be able to locate the text entry point, not the data section function descriptor, so add .r_debug_state to the symbol map on powerpc64. Obtained from: projects/ppc64
2010-07-10 17:43:24 +00:00
.if ${MACHINE_ARCH} == "powerpc64"
Compile RTLD with global dot symbols on 64-bit PowerPC, as a crutch for GDB's ability to locate r_debug_state (which is actually the only function that need be compiled this way).
2011-06-08 13:23:35 +00:00
CFLAGS+= -mcall-aixdesc
RTLD support for powerpc64. A few small modifications to the Makefile and symbol map are required to support various consequences of the dot symbol scheme: - Symbols beginning with a dot are reserved, so start private symbols with an underscore. - In order to set RTLD breakpoints, gdb must be able to locate the text entry point, not the data section function descriptor, so add .r_debug_state to the symbol map on powerpc64. Obtained from: projects/ppc64
2010-07-10 17:43:24 +00:00
LDFLAGS+= -nostdlib -e _rtld_start
.else
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
LDFLAGS+= -nostdlib -e .rtld_start
RTLD support for powerpc64. A few small modifications to the Makefile and symbol map are required to support various consequences of the dot symbol scheme: - Symbols beginning with a dot are reserved, so start private symbols with an underscore. - In order to set RTLD breakpoints, gdb must be able to locate the text entry point, not the data section function descriptor, so add .r_debug_state to the symbol map on powerpc64. Obtained from: projects/ppc64
2010-07-10 17:43:24 +00:00
.endif
Make WARNS=6 the default for libexec/. Just like bin/ and sbin/, I think setting WARNS to the highest value possible will make it more attractive for people to fix warnings. - The WARNS variable is set in the Makefile in the directory of the application itself, making it more likely that it will be removed out of curiosity to see what happens. - New applications will most likely build with WARNS=6 out of the box, because the author would more likely fix the warnings during development than lower WARNS. Unfortunately almost all apps in libexec require a lowered value of WARNS.
2010-01-02 09:50:19 +00:00
WARNS?= 2
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
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
SYMLINKS= ${BINDIR}/${PROG} /usr/libexec/${PROG}
Advertize rtld(1) as ld.so(1) in manual pages world
2003-02-13 23:07:28 +00:00
MLINKS= rtld.1 ld-elf.so.1.1 \
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
Use -fPIC to build libexec/rtld-elf on sparc64, so it will also be able to link with newer binutils, without overflowing the GOT. Obtained from: projects/binutils-2.17
2010-11-11 22:53:55 +00:00
.if ${MACHINE_CPUARCH} == "sparc64"
CFLAGS+= -fPIC
.else
CFLAGS+= -fpic
.endif
Add a hook to pass debug flags to the build of rtld when doing make in the rtld directory. Reviewed by: kan
2010-12-25 08:42:38 +00:00
CFLAGS+= -DPIC $(DEBUG)
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
LDFLAGS+= -shared -Wl,-Bsymbolic
Fixed missing DPADDs. Fixed some style bugs (some usual ones for LDADD, and misformatting of $FreeBSD$).
2000-03-27 16:11:27 +00:00
DPADD= ${LIBC_PIC}
Remove libssp_nonshared from the rtld linking set. The only use for the library was definition for the weak alias of __stack_chk_fail. No objections from: kan MFC after: 2 weeks
2012-03-24 19:14:44 +00:00
LDADD= -lc_pic
Prepare rtld for symbol versioning. Disable it by default for now.
2007-04-03 19:01:06 +00:00
When building for ARM EABI link against libgcc for the __aeabi_* functions.
2013-01-19 04:34:33 +00:00
.if ${MACHINE_CPUARCH} == "arm" && ${MK_ARM_EABI} != "no"
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
# Some of the required math functions (div & mod) are implemented in
# libcompiler_rt on ARM. The library also needs to be placed first to be
# correctly linked. As some of the functions are used before we have
# shared libraries.
DPADD+= ${LIBCOMPILER_RT}
LDADD+= -lcompiler_rt
When building for ARM EABI link against libgcc for the __aeabi_* functions.
2013-01-19 04:34:33 +00:00
.endif
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
.if ${MK_SYMVER} == "yes"
Centralize the calculation of the top source directory. This simplifies the build of rtld with partial checkout, allowing to override only one place to reference other tree. Submitted by: bde MFC after: 2 weeks
2012-03-23 12:10:12 +00:00
LIBCDIR= ${TOPSRCDIR}/lib/libc
Retire rtld-specific Versions.def. Symbols exported by rtld are supposed to override weak symbols exported by libc, so by definition these two are using the same symbol version names. Reflect the reality by referring to libc's Versions.def directly.
2007-04-29 16:12:06 +00:00
VERSION_DEF= ${LIBCDIR}/Versions.def
Prepare rtld for symbol versioning. Disable it by default for now.
2007-04-03 19:01:06 +00:00
SYMBOL_MAPS= ${.CURDIR}/Symbol.map
VERSION_MAP= Version.map
LDFLAGS+= -Wl,--version-script=${VERSION_MAP}
${PROG}: ${VERSION_MAP}
Make RTLD work on powerpc64 again. If there is a sub-directory named MACHINE_ARCH, use that specific one, otherwise use MACHINE_CPUARCH. Reviewed by: imp
2010-08-24 23:19:14 +00:00
.if exists(${.CURDIR}/${RTLD_ARCH}/Symbol.map)
SYMBOL_MAPS+= ${.CURDIR}/${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
.endif
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
.sinclude "${.CURDIR}/${RTLD_ARCH}/Makefile.inc"
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:
So do it like we do in usr.bin/tip/tip/Makefile. ;)
2004-11-14 22:18:31 +00:00
.if exists(${DESTDIR}/usr/libexec/${PROG})
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
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
.PATH: ${.CURDIR}/${RTLD_ARCH}
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
In preparation for ASLR [1] support add WITH_PIE to support building with -fPIE. This is currently an opt-in build flag. Once ASLR support is ready and stable it should changed to opt-out and be enabled by default along with ASLR. Each application Makefile uses opt-out to ensure that ASLR will be enabled by default in new directories when the system is compiled with PIE/ASLR. [2] Mark known build failures as NO_PIE for now. The only known runtime failure was rtld. [1] http://www.bsdcan.org/2014/schedule/events/452.en.html Submitted by: Shawn Webb <lattera@gmail.com> Discussed between: des@ and Shawn Webb [2]
2014-06-08 17:29:31 +00:00
NO_PIE= yes
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
.if ${MK_TESTS} != "no"
SUBDIR+= tests
.endif
Prepare rtld for symbol versioning. Disable it by default for now.
2007-04-03 19:01:06 +00:00
.include <bsd.symver.mk>
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>
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