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.op pattern rules are not used in non-profiling builds.
This does not cause any changes to both profiling and non-profiling
builds.
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This was used by --enable-omitfp, and the bulk of it was removed in this
commit:
commit bdeba1354b7364d9b7857a048286a71ddbcdff86
Author: Ulrich Drepper <drepper@gmail.com>
Date: Sat Jan 7 11:29:31 2012 -0500
Remove --enable-omitfp support
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This reverts commit 62ce266b0b261def2c6329be9814ffdcc11964d6.
The change is not mature enough because it needs the following fixes:
1. Redirect test output to a file like other tests
2. Eliminate the need to use a .gdbinit because distributions will
break without it. I should have caught that but I was in too much
of a hurry to get the patch in :/
3. Feature checking during configure to determine things like minimum
required gdb version, python-pexpect version, etc. to make sure
that tests work correctly.
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This patch adds pretty printers for the following NPTL types:
- pthread_mutex_t
- pthread_mutexattr_t
- pthread_cond_t
- pthread_condattr_t
- pthread_rwlock_t
- pthread_rwlockattr_t
To load the pretty printers into your gdb session, do the following:
python
import sys
sys.path.insert(0, '/path/to/glibc/build/nptl/pretty-printers')
end
source /path/to/glibc/source/pretty-printers/nptl-printers.py
You can check which printers are registered and enabled by issuing the
'info pretty-printer' gdb command. Printers should trigger automatically when
trying to print a variable of one of the types mentioned above.
The printers are architecture-independent, and were manually tested on both
the gdb CLI and Eclipse CDT.
In order to work, the printers need to know the values of various flags that
are scattered throughout pthread.h and pthreadP.h as enums and #defines. Since
replicating these constants in the printers file itself would create a
maintenance burden, I wrote a script called gen-py-const.awk that Makerules uses
to extract the constants. This script is pretty much the same as gen-as-const.awk,
except it doesn't cast the constant values to 'long' and is thorougly documented.
The constants need only to be enumerated in a .pysym file, which is then referenced
by a Make variable called gen-py-const-headers.
As for the install directory, I discussed this with Mike Frysinger and Siddhesh
Poyarekar, and we agreed that it can be handled in a separate patch, and it shouldn't
block merging of this one.
In addition, I've written a series of test cases for the pretty printers.
Each lock type (mutex, condvar and rwlock) has two test programs, one for itself
and other for its related 'attributes' object. Each test program in turn has a
PExpect-based Python script that drives gdb and compares its output to the
expected printer's. The tests run on the glibc host, which is assumed to have
both gdb and PExpect; if either is absent the tests will fail with code 77
(UNSUPPORTED). For cross-testing you should use cross-test-ssh.sh as test-wrapper.
I've tested the printers on both a native build and a cross build using a Beaglebone
Black, with the build system's filesystem shared with the board through NFS.
Finally, I've written a README that explains all this and more.
Hopefully this should be good to go in now. Thanks.
ChangeLog:
2016-07-04 Martin Galvan <martin.galvan@tallertechnologies.com>
* Makeconfig (build-hardcoded-path-in-tests): Set to 'yes' for shared builds
if tests-need-hardcoded-path is defined.
(all-subdirs): Add pretty-printers.
* Makerules ($(py-const)): New rule.
* Rules (others): Add $(py-const), if defined.
* nptl/Makefile (gen-py-const-headers): Define.
* nptl/nptl-printers.py: New file.
* nptl/nptl_lock_constants.pysym: Likewise.
* pretty-printers/Makefile: Likewise.
* pretty-printers/README: Likewise.
* pretty-printers/test-condvar-attributes.c: Likewise.
* pretty-printers/test-condvar-attributes.p: Likewise.
* pretty-printers/test-condvar-printer.c: Likewise.
* pretty-printers/test-condvar-printer.py: Likewise.
* pretty-printers/test-mutex-attributes.c: Likewise.
* pretty-printers/test-mutex-attributes.py: Likewise.
* pretty-printers/test-mutex-printer.c: Likewise.
* pretty-printers/test-mutex-printer.py: Likewise.
* pretty-printers/test-rwlock-attributes.c: Likewise.
* pretty-printers/test-rwlock-attributes.py: Likewise.
* pretty-printers/test-rwlock-printer.c: Likewise.
* pretty-printers/test-rwlock-printer.py: Likewise.
* pretty-printers/test_common.py: Likewise.
* scripts/gen-py-const.awk: Likewise.
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If C++ headers <cstdlib> or <cmath> are used, GCC 6 will include
/usr/include/stdlib.h or /usr/include/math.h from "#include_next"
(instead of stdlib/stdlib.h or math/math.h in the glibc source
directory), and this turns up as a make dependency. An implicit
rule will kick in and make will try to install stdlib/stdlib.h or
math/math.h as /usr/include/stdlib.h or /usr/include/math.h because
the target is out of date. We make a copy of <cstdlib> and <cmath>
in the glibc build directory so that stdlib/stdlib.h and math/math.h
will be used instead of /usr/include/stdlib.h and /usr/include/math.h.
[BZ #20314]
* Makeconfig (CXXFLAGS): Prepend -I$(common-objpfx).
* Makerules (before-compile): Add $(common-objpfx)cstdlib and
$(common-objpfx)cmath.
($(common-objpfx)cstdlib): New target.
($(common-objpfx)cmath): Likewise.
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Update Makefiles to build libmtracectl.so
Tweak mtrace-ctl.c to avoid compiler warnings.
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In 1999 the project split "localedir" into "localedir" (path to compiled
locale archives) and "msgcatdir" (path to message catalogs). This
predates the 2002 change in the GNU Coding Standard to document the use
of "localedir" for the path to the message catalogs. It appears that
newlib, gcc, and several other projects also used "msgcatdir" at one
point or another in the past, and so it is in line with historical
precedent that glibc would also use "msgcatdir." However, given that the
GNU Coding Standard uses "localedir", we will switch to that for
consistency as a GNU project. Previous uses of --localdir didn't work
anyway (see bug 14259).
I am committing this patch in the understanding that nobody would object
to fixing #14259 as part of aligning our variable usage to the GNU
Coding Standard.
Given that previous "localedir" uses were converted to "complocaledir"
by [1], we can now convert "msgcatdir" to "localedir" and complete the
transition. With an addition to config.make.in we also fix bug 14259 and
allow users to specify the locale dependent data directory with
"--localedir" at configure time. There is still no way to control at
configure time the location of the *compiled* locale directory.
Tested on x86_64 with no regressions.
Tested using "--localedir" to specify alternate locale dependent data
directory and verified with "make install DESTDIR=/tmp/glibc".
[1] 90fe682d3067163aa773feecf497ef599429457a
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In preparation to fix the --localedir configure argument we must
move the existing conflicting definition of localedir to a more
appropriate name. Given that all current internal uses of localedir
relate to the compiled locales we rename to complocaledir.
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Now that GCC 4.7 or later is required to build glibc, this patch moves
the build from using -std=gnu99 to -std=gnu11 (option added in 4.7).
This allows use of C11 features from GCC's headers, such as new
float.h macros and max_align_t.
Tested for x86_64 and x86 (testsuite; installed stripped shared
libraries are unchanged by the patch on x86_64, while I see some
slight code reordering of no significance on x86).
* Makeconfig (CFLAGS): Use -std=gnu11 instead of -std=gnu99.
* Makefile ($(objpfx)c++-types-check.out): Filter out -std=gnu11
instead of -std=gnu99.
* configure.ac (systemtap): Test with -std=gnu11 instead of
-std=gnu99.
* configure: Regenerated.
* math/gen-auto-libm-tests.c: Use -std=gnu11 instead of -std=gnu99
in compilation command in comment.
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There is a configure test for "whether we need to use -P to assemble
.S files".
I think this test is long obsolete. I don't have a specific reference
to a binutils change or version that obsoleted this test, but: (a) we
only support GNU binutils; (b) it looks like every architecture
supported by glibc has '#' as a line comment character in its gas
port; (c) in any case, if the (compiler, assembler) combination in use
cannot compile a .S file without special options, that would clearly
be a substantially broken combination, which I don't think we need to
allow for at all.
The test in question was added by:
Thu Jan 27 16:46:03 1994 Roland McGrath (roland@churchy.gnu.ai.mit.edu)
* configure.in (asm-CPPFLAGS): Add new check to see if assembling
a .S file loses without -P. If so, set asm-CPPFLAGS=-P in config.make.
This patch removes the test and the reference to this issue in the
comment on the default empty definition of asm-CPPFLAGS. (Various
other settings of asm-CPPFLAGS remain in sysdeps Makefile fragments.)
Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).
* configure.ac (libc_cv_need_minus_P): Remove configure test.
* configure: Regenerated.
* Makeconfig (asm-CPPFLAGS): Remove reference to -P in comment.
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This patch makes glibc build with -Wold-style-definition to avoid
old-style function definitions creeping back in by accident.
Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch). Also tested build for arm,
mips64 and powerpc32. Hopefully there aren't any remaining
system-specific files with old-style definitions whose formatting
evaded my searches, but if there are, they will be easy to fix.
* Makeconfig (+gccwarn-c): Add -Wold-style-definition.
* Makefile ($(objpfx)c++-types-check.out): Filter out
$(+gccwarn-c) instead of -Wstrict-prototypes.
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There is a configure test for -fgnu89-inline. This option was added
in GCC 4.2, so the test is obsolete; this patch removes it.
Tested for x86_64 (testsuite, and that installed shared libraries are
unchanged by the patch).
* configure.ac (libc_cv_gnu89_inline): Remove configure test.
* configure: Regenerated.
* config.make.in (gnu89-inline-CFLAGS): Remove variable.
* Makeconfig (CFLAGS): Use -fgnu89-inline instead of
$(gnu89-inline-CFLAGS).
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There is a configure test for -fexceptions. This option was added in
GCC 2.8, so the test is obsolete - and indeed plenty of code is using
-fexceptions directly. This patch removes the configure test and
makes all uses of $(exceptions) use -fexceptions directly.
Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).
* configure.ac (libc_cv_gcc_exceptions): Remove configure test.
* configure: Regenerated.
* sysdeps/arm/configure.ac (libc_cv_gcc_exceptions): Do not set
variable.
(exceptions): Likewise.
* sysdeps/arm/configure: Regenerated.
* config.make.in (exceptions): Remove variable.
* Makeconfig (uses-callbacks): Use -fexceptions instead of
$(exceptions).
* debug/Makefile (CFLAGS-dprintf_chk.c): Likewise.
(CFLAGS-vdprintf_chk.c): Likewise.
(CFLAGS-printf_chk.c): Likewise.
(CFLAGS-fprintf_chk.c): Likewise.
(CFLAGS-vprintf_chk.c): Likewise.
(CFLAGS-vfprintf_chk.c): Likewise.
(CFLAGS-gets_chk.c): Likewise.
(CFLAGS-fgets_chk.c): Likewise.
(CFLAGS-fgets_u_chk.c): Likewise.
(CFLAGS-fread_chk.c): Likewise.
(CFLAGS-fread_u_chk.c): Likewise.
(CFLAGS-wprintf_chk.c): Likewise.
(CFLAGS-fwprintf_chk.c): Likewise.
(CFLAGS-vwprintf_chk.c): Likewise.
(CFLAGS-vfwprintf_chk.c): Likewise.
(CFLAGS-fgetws_chk.c): Likewise.
(CFLAGS-fgetws_u_chk.c): Likewise.
* libio/Makefile (CFLAGS-fileops.c): Likewise.
(CFLAGS-fputc.c): Likewise.
(CFLAGS-fputwc.c): Likewise.
(CFLAGS-freopen64.c): Likewise.
(CFLAGS-freopen.c): Likewise.
(CFLAGS-fseek.c): Likewise.
(CFLAGS-fseeko64.c): Likewise.
(CFLAGS-fseeko.c): Likewise.
(CFLAGS-ftello64.c): Likewise.
(CFLAGS-ftello.c): Likewise.
(CFLAGS-fwide.c): Likewise.
(CFLAGS-genops.c): Likewise.
(CFLAGS-getc.c): Likewise.
(CFLAGS-getchar.c): Likewise.
(CFLAGS-getwc.c): Likewise.
(CFLAGS-getwchar.c): Likewise.
(CFLAGS-iofclose.c): Likewise.
(CFLAGS-iofflush.c): Likewise.
(CFLAGS-iofgetpos64.c): Likewise.
(CFLAGS-iofgetpos.c): Likewise.
(CFLAGS-iofgets.c): Likewise.
(CFLAGS-iofgetws.c): Likewise.
(CFLAGS-iofputs.c): Likewise.
(CFLAGS-iofputws.c): Likewise.
(CFLAGS-iofread.c): Likewise.
(CFLAGS-iofsetpos64.c): Likewise.
(CFLAGS-iofsetpos.c): Likewise.
(CFLAGS-ioftell.c): Likewise.
(CFLAGS-iofwrite.c): Likewise.
(CFLAGS-iogetdelim.c): Likewise.
(CFLAGS-iogetline.c): Likewise.
(CFLAGS-iogets.c): Likewise.
(CFLAGS-iogetwline.c): Likewise.
(CFLAGS-ioputs.c): Likewise.
(CFLAGS-ioseekoff.c): Likewise.
(CFLAGS-ioseekpos.c): Likewise.
(CFLAGS-iosetbuffer.c): Likewise.
(CFLAGS-iosetvbuf.c): Likewise.
(CFLAGS-ioungetc.c): Likewise.
(CFLAGS-ioungetwc.c): Likewise.
(CFLAGS-oldfileops.c): Likewise.
(CFLAGS-oldiofclose.c): Likewise.
(CFLAGS-oldiofgetpos64.c): Likewise.
(CFLAGS-oldiofgetpos.c): Likewise.
(CFLAGS-oldiofsetpos64.c): Likewise.
(CFLAGS-oldiofsetpos.c): Likewise.
(CFLAGS-peekc.c): Likewise.
(CFLAGS-putc.c): Likewise.
(CFLAGS-putchar.c): Likewise.
(CFLAGS-putwc.c): Likewise.
(CFLAGS-putwchar.c): Likewise.
(CFLAGS-rewind.c): Likewise.
(CFLAGS-wfileops.c): Likewise.
(CFLAGS-wgenops.c): Likewise.
(CFLAGS-oldiofopen.c): Likewise.
(CFLAGS-iofopen.c): Likewise.
(CFLAGS-iofopen64.c): Likewise.
(CFLAGS-oldtmpfile.c): Likewise.
* stdio-common/Makefile (CFLAGS-vfprintf.c): Likewise.
(CFLAGS-fprintf.c): Likewise.
(CFLAGS-printf.c): Likewise.
(CFLAGS-vfwprintf.c): Likewise.
(CFLAGS-vfscanf.c): Likewise.
(CFLAGS-vfwscanf.c): Likewise.
(CFLAGS-fscanf.c): Likewise.
(CFLAGS-scanf.c): Likewise.
(CFLAGS-isoc99_vfscanf.c): Likewise.
(CFLAGS-isoc99_vscanf.c): Likewise.
(CFLAGS-isoc99_fscanf.c): Likewise.
(CFLAGS-isoc99_scanf.c): Likewise.
* wcsmbs/Makefile (CFLAGS-isoc99_wscanf.c): Likewise.
(CFLAGS-isoc99_fwscanf.c): Likewise.
(CFLAGS-isoc99_vwscanf.c): Likewise.
(CFLAGS-isoc99_vfwscanf.c): Likewise.
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This patch removes the use of -Wno-error=undef, so that -Wundef
warnings become errors.
Tested for x86_64, x86, mips64 (all three ABIs) and arm.
* Makeconfig [$(enable-werror) = yes] (+gccwarn): Do not add
-Wno-error=undef.
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The recently introduced TLS variables in the thread-local destructor
implementation (__cxa_thread_atexit_impl) used the default GD access
model, resulting in a call to __tls_get_addr. This causes a deadlock
with recent changes to the way TLS is initialized because DTV
allocations are delayed and hence despite knowing the offset to the
variable inside its TLS block, the thread has to take the global rtld
lock to safely update the TLS offset.
This causes deadlocks when a thread is instantiated and joined inside
a destructor of a dlopen'd DSO. The correct long term fix is to
somehow not take the lock, but that will need a lot deeper change set
to alter the way in which the big rtld lock is used.
Instead, this patch just eliminates the call to __tls_get_addr for the
thread-local variables inside libc.so, libpthread.so and rtld by
building all of their units with -mtls-model=initial-exec.
There were concerns that the static storage for TLS is limited and
hence we should not be using it. Additionally, dynamically loaded
modules may result in libc.so looking for this static storage pretty
late in static binaries. Both concerns are valid when using TLSDESC
since that is where one may attempt to allocate a TLS block from
static storage for even those variables that are not IE. They're not
very strong arguments for the traditional TLS model though, since it
assumes that the static storage would be used sparingly and definitely
not by default. Hence, for now this would only theoretically affect
ARM architectures.
The impact is hence limited to statically linked binaries that dlopen
modules that in turn load libc.so, all that on arm hardware. It seems
like a small enough impact to justify fixing the larger problem that
currently affects everything everywhere.
This still does not solve the original problem completely. That is,
it is still possible to deadlock on the big rtld lock with a small
tweak to the test case attached to this patch. That problem is
however not a regression in 2.22 and hence could be tackled as a
separate project. The test case is picked up as is from Alex's patch.
This change has been tested to verify that it does not cause any
issues on x86_64.
ChangeLog:
[BZ #18457]
* nptl/Makefile (tests): New test case tst-join7.
(modules-names): New test case module tst-join7mod.
* nptl/tst-join7.c: New file.
* nptl/tst-join7mod.c: New file.
* Makeconfig (tls-model): Pass -ftls-model=initial-exec for
all translation units in libc.so, libpthread.so and rtld.
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To support building glibc with GCC 6 configured with --enable-default-pie,
which generates PIE by default, we need to build programs as PIE. But
elf/tst-dlopen-aout must not be built as PIE since it tests dlopen on
ET_EXEC file and PIE is ET_DYN.
[BZ #17841]
* Makeconfig (no-pie-ldflag): New.
(+link): Set to $(+link-pie) if default to PIE.
(+link-tests): Set to $(+link-pie-tests) if default to PIE.
* config.make.in (build-pie-default): New.
* configure.ac (libc_cv_pie_default): New. Set to yes if -fPIE
is default. AC_SUBST.
* configure: Regenerated.
* elf/Makefile (LDFLAGS-tst-dlopen-aout): New.
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Make runtime-linker.h available outside $(elf-objpfx) by moving
the file to $(common-objpfx) and the rules for it to Makerules.
Tested for x86_64 and x86 (testsuite, and that no compiled code
changed by the patch).
* Makeconfig (+interp): Remove unused variable.
* elf/Makefile ($(objpfx)interp.os): Define for [$(build-shared) = yes]
only. Depend on $(common-objpfx)runtime-linker.h instead of
$(elf-objpfx)runtime-linker.h.
($(elf-objpfx)runtime-linker.h): Rename to
$(common-objpfx)runtime-linker.h and move ...
* Makerules [$(build-shared) = yes]: ... here.
* elf/interp.c: Include <runtime-linker.h> instead of
<elf/runtime-linker.h>.
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Installation of libm.so as linker script only in case of libmvec.so build.
2015-05-14 Andrew Senkevich <andrew.n.senkevich@gmail.com>
* Makeconfig (rpath-dirs, all-subdirs): Added mathvec folder.
(libmvec): New variable.
* configure.ac: Added option for mathvec build.
* configure: Regenerated.
* mathvec/Depend: New file.
* mathvec/Makefile: New file.
* shlib-versions: Added libmvec.
* math/Makefile: Added rule for libm.so installation.
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-Winline causes architecture- and optimization-dependent build failures
due to -Werror. -Winline warns about inlining decisions based on
branch hints, in effect preventing the use of inline functions in
header files (because they might be called on unlikely branches, leading
to a decision not to inline).
The option was apparently added to the glibc build at a time when GCC
did not support the always_inline attribute. With current GCC versions,
inlining failure for functions declared always_inline will receive a
warning under -Wattributes, which is enabled by default, so -Winline
appears unnecessary.
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As discussed starting at
<https://sourceware.org/ml/libc-alpha/2014-11/msg00323.html>, this
patch makes the glibc build use -Werror by default to avoid
accidentally adding new warnings to the build. The configure option
--disable-werror can be used to disable this.
-Wno-error=undef is temporarily used because the build isn't clean
regarding -Wundef warnings. The idea is that once the remaining
-Wundef warnings have been cleaned up (in at least one configuration),
-Wno-error=undef will be removed.
I get a clean build and test on x86_64 (GCC 4.9 branch) with this
patch. The expectation is that this may well break the build for some
other configurations, and people seeing such breakage should make
appropriate fixes to fix or suppress the warnings for their
configurations. In some cases that may involve using pragmas as the
right fix (I think that will be right for the -Wno-inline issue for
MIPS I referred to in
<https://sourceware.org/ml/libc-alpha/2012-11/msg00798.html>, for
example), in some cases -Wno-error in sysdeps makefiles (__restore_rt
in MIPS sigaction, for example), in some cases substantive fixes for
the warnings.
Note that if, with a view to listing all the warnings then fixing them
all, you just look for "warning:" in output from building and testing
with --disable-werror, you'll see lots of warnings from the linker
about functions such as tmpnam. Those warnings can be ignored - only
compiler warnings are relevant to -Werror, not linker warnings.
* configure.ac (--disable-werror): New configure option.
(enable_werror): New AC_SUBST.
* configure: Regenerated.
* config.make.in (enable-werror): New variable.
* Makeconfig [$(enable-werror) = yes] (+gccwarn): Add -Werror
-Wno-error=undef.
(+gccwarn-c): Do not use -Werror=implicit-function-declaration.
* manual/install.texi (Configuring and compiling): Document
--disable-werror.
* INSTALL: Regenerated.
* debug/Makefile (CFLAGS-tst-chk1.c): Add -Wno-error.
(CFLAGS-tst-chk2.c): Likewise.
(CFLAGS-tst-chk3.c): Likewise.
(CFLAGS-tst-chk4.cc): Likewise.
(CFLAGS-tst-chk5.cc): Likewise.
(CFLAGS-tst-chk6.cc): Likewise.
(CFLAGS-tst-lfschk1.c): Likewise.
(CFLAGS-tst-lfschk2.c): Likewise.
(CFLAGS-tst-lfschk3.c): Likewise.
(CFLAGS-tst-lfschk4.cc): Likewise.
(CFLAGS-tst-lfschk5.cc): Likewise.
(CFLAGS-tst-lfschk6.cc): Likewise.
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Define MODULE_NAME in the build command and define IN_MODULE using
MODULE_NAME. Verified that the generated code is unchanged on x86_64.
* Makeconfig (module-cppflags-real): Define MODULE_NAME
instead of IN_MODULE.
* include/libc-symbols.h (IN_MODULE): Define using
MODULE_NAME.
(PASTE_NAME, PASTE_NAME1): New macros.
* include/stap-probe.h (LIBC_PROBE_1): Use MODULE_NAME instead
of IN_LIB.
(STAP_PROBE_ASM): Likewise.
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Remove libc-modules.h from the tree and auto-generate it from
soversions.i and the list of modules in the built-modules variable
defined in Makeconfig. Macros generated have increasing numbered
values, with built-modules having lower values starting from 1,
following which a separator value LIBS_BEGIN is added and then finally
the library names from soversions.i are appended to the list. This
allows us to conveniently differentiate between the versioned
libraries and other built modules, which is needed in errno.h and
netdb.h to decide whether to use an internal symbol or an external
one.
Verified that generated code remains unchanged on x86_64.
* Makeconfig (built-modules): List non-library modules to be
built.
(module-cppflags): Include libc-modules.h for
everything except shlib-versions.v.i.
(CPPFLAGS): Use it.
(before-compile): Add libc-modules.h.
($(common-objpfx)libc-modules.h,
$(common-objpfx)libc-modules.stmp): New targets.
(common-generated): Add libc-modules.h and libc-modules.stmp.
($(common-objpfx)Versions.v.i): Depend on libc-modules.h.
* include/libc-symbols.h: Don't include libc-modules.h.
* include/libc-modules.h: Remove file.
* scripts/gen-libc-modules.awk: New script to generate
libc-modules.h.
* sysdeps/unix/Makefile ($(common-objpfx)sysd-syscalls):
Depend on libc-modules.stmp.
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The current scheme to identify which module a translation unit is
built in depends on defining multiple macros IS_IN_* and also defining
NOT_IN_libc if we're building a non-libc module. In addition, there
is an IN_LIB macro that does effectively the same thing, but for
different modules (notably the systemtap probes). This macro scheme
unifies both ideas to use just one macro IN_MODULE and assign it a
value depending on the module it is being built into. If the module
is not defined, it defaults to MODULE_libc.
Patches that follow will replace uses of IS_IN_* variables with the
IS_IN() macro. libc-symbols.h has been converted already to give an
example of how such a transition will look.
Verified that there are no relevant binary changes. One source change
that will crop up repeatedly is that of nscd_stat, since it uses the
build timestamp as a constant in its logic.
* Makeconfig (in-module): Get value of libof set for the
translation unit.
(CPPFLAGS): Use $(in-module).
* Makerules: Don't suffix routine names for nonlib.
* include/libc-modules.h: New file.
* include/libc-symbols.h: Include libc-modules.h
(IS_IN): New macro to replace IS_IN_* macros.
* elf/Makefile: Set libof-* for each routine.
* elf/rtld-Rules: Likewise.
* extra-modules.mk: Likewise.
* iconv/Makefile: Likewise.
* iconvdata/Makefile: Likewise.
* locale/Makefile: Likewise.
* malloc/Makefile: Likewise.
* nss/Makefile: Likewise.
* sysdeps/gnu/Makefile: Likewise.
* sysdeps/ieee754/ldbl-opt/Makefile: Likewise.
* sysdeps/unix/sysv/linux/Makefile: Likewise.
* sysdeps/s390/s390-64/Makefile: Likewise.
* nscd/Makefile: Set libof-* for each routine. Set CFLAGS and
CPPFLAGS for nscd instead of nonlib.
|
|
This patch eliminates the mixture of SONAME information in
shlib-versions files and SONAME information used to generate
gnu/lib-names.h in makefiles, with the information in the makefiles
being removed so all this information comes from the shlib-versions
files.
So that gnu/lib-names.h supports multiple ABIs, it is changed to be
generated on the same basis as gnu/stubs.h: when there are multiple
ABIs, gnu/lib-names.h is a wrapper header (the same header installed
whatever ABI is being built) and separate headers such as
gnu/lib-names-64.h contain the substantive contents (only one such
header being installed by any glibc build).
The rules for building gnu/lib-names.h were moved from Makeconfig to
Makerules because they need to come after sysdeps makefiles are
included (now that "ifndef abi-variants" is a toplevel conditional on
the rules rather than $(abi-variants) being evaluated later inside the
commands for a rule).
Tested for x86_64 and x86 that the installed shared libraries are
unchanged by this patch, and examined the installed gnu/lib-names*.h
headers by hand. Also tested the case of a single ABI (where there is
just a single header installed, again like stubs.h) by hacking
abi-variants to empty for x86_64.
[BZ #14171]
* Makeconfig [$(build-shared) = yes]
($(common-objpfx)soversions.mk): Don't handle SONAMEs specified in
makefiles.
[$(build-shared) = yes && $(soversions.mk-done) = t]
($(common-objpfx)gnu/lib-names.h): Remove rule.
[$(build-shared) = yes && $(soversions.mk-done) = t]
($(common-objpfx)gnu/lib-names.stmp): Likewise. Split and moved
to Makerules.
[$(build-shared) = yes && $(soversions.mk-done) = t]
(before-compile): Don't append $(common-objpfx)gnu/lib-names.h
here.
[$(build-shared) = yes && $(soversions.mk-done) = t]
(common-generated): Don't append gnu/lib-names.h and
gnu/lib-names.stmp here.
* Makerules [$(build-shared) = yes && $(soversions.mk-done) = t]
(lib-names-h-abi): New variable.
[$(build-shared) = yes && $(soversions.mk-done) = t]
(lib-names-stmp-abi): Likewise.
[$(build-shared) = yes && $(soversions.mk-done) = t &&
abi-variants] (before-compile): Append
$(common-objpfx)$(lib-names-h-abi).
[$(build-shared) = yes && $(soversions.mk-done) = t &&
abi-variants] (common-generated): Append gnu/lib-names.h.
[$(build-shared) = yes && $(soversions.mk-done) = t &&
abi-variants] (install-others-nosubdir): Depend on
$(inst_includedir)/$(lib-names-h-abi).
[$(build-shared) = yes && $(soversions.mk-done) = t &&
abi-variants] ($(common-objpfx)gnu/lib-names.h): New rule.
[$(build-shared) = yes && $(soversions.mk-done) = t]
($(common-objpfx)$(lib-names-h-abi)): New rule.
[$(build-shared) = yes && $(soversions.mk-done) = t]
($(common-objpfx)$(lib-names-stmp-abi)): Likewise.
[$(build-shared) = yes && $(soversions.mk-done) = t]
(common-generated): Append $(lib-names-h-abi) and
$(lib-names-stmp-abi).
* |
