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In CLANG_PLUGIN_FILE it is possible for plugin_file to be non-NULL when LLVMgold.so does not exist. configure output is messy, with results not printed against their "checking.." line, eg. checking for clang... (cached) yes checking for clang plugin file... checking for x86_64-pc-linux-gnu-ar... (cached) ar --plugin /usr/lib/llvm-20/lib/clang/20/../../LLVMgold.so /usr/lib/llvm-20/lib/clang/20/../../LLVMgold.so This patch fixes those problems, and a similar interposition of other configure output between AC_MSG_CHECKING and AC_MSG_RESULT in gcc-plugin.m4. It also tidies some of the message text, and makes similar code in gcc-plugin.m4 and clang-plugin.m4 a little more consistent. config/ * clang-plugin.m4 (CLANG_PLUGIN_FILE): Don't place checks for tools (llvm-config, ar) inside AC_MSG_CHECKING..AC_MSG_RESULT for clang plugin file. Clear plugin_file before loop exit. (CLANG_PLUGIN_FILE_FOR_TARGET): Similarly. * gcc-plugin.m4 (GCC_PLUGIN_OPTION): Similarly. (GCC_PLUGIN_OPTION_FOR_TARGET): Correct AC_MSG_CHECKING. Tidy return code. binutils/ * testsuite/lib/binutils-common.exp <llvm_plug_opt>: Set for non-native. * configure: Regenerate. / * configure: Regenerate. bfd/ * configure: Regenerate. gas/ * configure: Regenerate. gdb/ * configure: Regenerate. gprof/ * configure: Regenerate. gprofng/ * configure: Regenerate. * libcollector/configure: Regenerate. ld/ * configure: Regenerate. libbacktrace/ * configure: Regenerate. libctf/ * configure: Regenerate. libiberty/ * configure: Regenerate. libsframe/ * configure: Regenerate. opcodes/ * configure: Regenerate. sim/ * configure: Regenerate. zlib/ * configure: Regenerate.
The libbacktrace library Initially written by Ian Lance Taylor <iant@golang.org> The libbacktrace library may be linked into a program or library and used to produce symbolic backtraces. Sample uses would be to print a detailed backtrace when an error occurs or to gather detailed profiling information. In general the functions provided by this library are async-signal-safe, meaning that they may be safely called from a signal handler. The libbacktrace library is provided under a BSD license. See the source files for the exact license text. The public functions are declared and documented in the header file backtrace.h, which should be #include'd by a user of the library. Building libbacktrace will generate a file backtrace-supported.h, which a user of the library may use to determine whether backtraces will work. See the source file backtrace-supported.h.in for the macros that it defines. As of October 2020, libbacktrace supports ELF, PE/COFF, Mach-O, and XCOFF executables with DWARF debugging information. In other words, it supports GNU/Linux, *BSD, macOS, Windows, and AIX. The library is written to make it straightforward to add support for other object file and debugging formats. The library relies on the C++ unwind API defined at https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html This API is provided by GCC and clang.