Recent Darwin versions place contraints on the use of run paths
specified in environment variables. This breaks some assumptions
in the GCC build.
This change allows the user to configure a Darwin build to use
'@rpath/libraryname.dylib' in library names and then to add an
embedded runpath to executables (and libraries with dependents).
The embedded runpath is added by default unless the user adds
'-nodefaultrpaths' to the link line.
For an installed compiler, it means that any executable built with
that compiler will reference the runtimes installed with the
compiler (equivalent to hard-coding the library path into the name
of the library).
During build-time configurations any "-B" entries will be added to
the runpath thus the newly-built libraries will be found by exes.
Since the install name is set in libtool, that decision needs to be
available here (but might also cause dependent ones in Makefiles,
so we need to export a conditional).
This facility is not available for Darwin 8 or earlier, however the
existing environment variable runpath does work there.
We default this on for systems where the external DYLD_LIBRARY_PATH
does not work and off for Darwin 8 or earlier. For systems that can
use either method, if the value is unset, we use the default (which
is currently DYLD_LIBRARY_PATH).
I accidentally duplicated the autoconf config files in the top level
directory and the config directory. Fix that, and regenerate
Makefile.in and configure.
Patch from Björn Schäpers <bjoern@hazardy.de>.
* configure.ac: Checked for tlhelp32.h
* pecoff.c: Include <tlhelp32.h> if available.
(backtrace_initialize): Use tlhelp32 api for a snapshot to
detect loaded modules.
(coff_add): New argument for the module handle of the file,
to get the base address.
* configure, config.h.in: Regenerate.
This should fix a testsuite problem with Solaris ld that supports zlib
but not zlib-gabi.
* configure.ac: Test --compress-debug-sections=zlib-gnu and
--compress-debug-sections=zlib-gabi separately, setting new
automake conditionals.
* Makefile.am (ctestg, ctestg_alloc): Only build if
HAVE_COMPRESSED_DEBUG_ZLIB_GNU.
(ctesta, ctesta_alloc): Only build if
HAVE_COMPRESSED_DEBUG_ZLIB_GABI.
(ctestzstd_alloc): New test if HAVE_COMPRESSED_DEBUG_ZSTD.
* configure, Makefile.in: Regenerate.
Patch from Björn Schäpers.
* fileline.c: Include <windows.h> if available.
(windows_get_executable_path): New static function.
(fileline_initialize): Call windows_get_executable_path.
* configure.ac: Checked for windows.h
* configure: Regenerate.
* config.h.in: Regenerate.
Patch from Andres Freund:
* configure.ac: Check for _pgmptr declaration.
* fileline.c (fileline_initialize): Check for _pgmfptr before
/proc/self/exec.
* configure, config.h.in: Regenerate.
QNX uses sys/link.h rather than link.h for dl_iterate_phdr
Fixes#86
* configure.ac: Check for sys/link.h. Use either link.h or
sys/link.h when checking for dl_iterate_phdr.
* elf.c: Include sys/link.h if available.
* configure, config.h.in: Regenerate.
On AIX, the compiler supports DWARF 5 but the linker does not.
2020-07-07 Clement Chigot <clement.chigot@atos.net>
* configure.ac: Test linker support for DWARF5
* configure: Regenerate
This is a standalone version of the libbacktrace library that I
originally wrote for GCC. This is a copy of libbacktrace from GCC
trunk, with all dependencies incorporated here.
