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tools build: Add feature test for abi::__cxa_demangle

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cxxabi.h is part of libsdtc++ and LLVM's libcxx, providing
abi::__cxa_demangle a portable C++ demangler. Add a feature test to
detect that the function is available.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andres Freund <andres@anarazel.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin Liška <mliska@suse.cz>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Pavithra Gurushankar <gpavithrasha@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Monnet <quentin@isovalent.com>
Cc: Roberto Sassu <roberto.sassu@huawei.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: llvm@lists.linux.dev
Link: https://lore.kernel.org/r/20230311065753.3012826-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2023-03-10 22:57:48 -08:00 committed by Arnaldo Carvalho de Melo
parent dd317df072
commit 4c72e2b35a
3 changed files with 22 additions and 0 deletions
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1
tools/build/Makefile.feature
View File

@ -80,6 +80,7 @@ FEATURE_TESTS_EXTRA := \
compile-32 \
compile-x32 \
cplus-demangle \
cxa-demangle \
gtk2 \
gtk2-infobar \
hello \

4
tools/build/feature/Makefile
View File

@ -23,6 +23,7 @@ FILES= \
test-libbfd-liberty.bin \
test-libbfd-liberty-z.bin \
test-cplus-demangle.bin \
test-cxa-demangle.bin \
test-libcap.bin \
test-libelf.bin \
test-libelf-getphdrnum.bin \
@ -262,6 +263,9 @@ $(OUTPUT)test-libbfd-liberty-z.bin:
$(OUTPUT)test-cplus-demangle.bin:
$(BUILD) -liberty
$(OUTPUT)test-cxa-demangle.bin:
$(BUILDXX)
$(OUTPUT)test-backtrace.bin:
$(BUILD)

17
tools/build/feature/test-cxa-demangle.cpp Normal file
View File

@ -0,0 +1,17 @@
// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <stdlib.h>
#include <cxxabi.h>
int main(void)
{
size_t len = 256;
char *output = (char*)malloc(len);
int status;
output = abi::__cxa_demangle("FieldName__9ClassNameFd", output, &len, &status);
printf("demangled symbol: {%s}\n", output);
return 0;
}