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80ef4126b1
glibc supports versioning, so it's possible to build against older version and run against newer version. This is sometimes relied on in practice, e.g. in Fuchsia build we build against older sysroot (equivalent to Ubuntu Trusty) to cover the broadest possible range of host systems, but that doesn't necessarily match the system that binary is going to run on which may have newer version, in which case the compile test used in curr_symbol is going to fail. Using runtime check is more reliable. This is a follow up to D56702 which addressed one instance, this patch addresses all of the remaining ones. Differential Revision: https://reviews.llvm.org/D88188
128 lines
3.9 KiB
C++
128 lines
3.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// Define a bunch of macros that can be used in the tests instead of
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// implementation defined assumptions:
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// - locale names
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// - floating point number string output
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#ifndef PLATFORM_SUPPORT_H
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#define PLATFORM_SUPPORT_H
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// locale names
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#ifdef _WIN32
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// WARNING: Windows does not support UTF-8 codepages.
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// Locales are "converted" using https://docs.moodle.org/dev/Table_of_locales
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# define LOCALE_en_US "en-US"
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# define LOCALE_en_US_UTF_8 "en-US"
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# define LOCALE_cs_CZ_ISO8859_2 "cs-CZ"
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# define LOCALE_fr_FR_UTF_8 "fr-FR"
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# define LOCALE_fr_CA_ISO8859_1 "fr-CA"
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# define LOCALE_ru_RU_UTF_8 "ru-RU"
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# define LOCALE_zh_CN_UTF_8 "zh-CN"
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#elif defined(__CloudABI__)
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// Timezones are integrated into locales through LC_TIMEZONE_MASK on
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// CloudABI. LC_ALL_MASK can only be used if a timezone has also been
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// provided. UTC should be all right.
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# define LOCALE_en_US "en_US"
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# define LOCALE_en_US_UTF_8 "en_US.UTF-8@UTC"
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# define LOCALE_fr_FR_UTF_8 "fr_FR.UTF-8@UTC"
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# define LOCALE_fr_CA_ISO8859_1 "fr_CA.ISO-8859-1@UTC"
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# define LOCALE_cs_CZ_ISO8859_2 "cs_CZ.ISO-8859-2@UTC"
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# define LOCALE_ru_RU_UTF_8 "ru_RU.UTF-8@UTC"
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# define LOCALE_zh_CN_UTF_8 "zh_CN.UTF-8@UTC"
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#else
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# define LOCALE_en_US "en_US"
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# define LOCALE_en_US_UTF_8 "en_US.UTF-8"
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# define LOCALE_fr_FR_UTF_8 "fr_FR.UTF-8"
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# ifdef __linux__
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# define LOCALE_fr_CA_ISO8859_1 "fr_CA.ISO-8859-1"
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# define LOCALE_cs_CZ_ISO8859_2 "cs_CZ.ISO-8859-2"
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# else
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# define LOCALE_fr_CA_ISO8859_1 "fr_CA.ISO8859-1"
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# define LOCALE_cs_CZ_ISO8859_2 "cs_CZ.ISO8859-2"
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# endif
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# define LOCALE_ru_RU_UTF_8 "ru_RU.UTF-8"
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# define LOCALE_zh_CN_UTF_8 "zh_CN.UTF-8"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <codecvt>
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#include <locale>
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#include <string>
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#if defined(_WIN32) || defined(__MINGW32__)
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# include <io.h> // _mktemp_s
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#else
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# include <unistd.h> // close
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#endif
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#if defined(_NEWLIB_VERSION) && defined(__STRICT_ANSI__)
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// Newlib provides this, but in the header it's under __STRICT_ANSI__
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extern "C" {
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int mkstemp(char*);
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}
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#endif
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#ifndef __CloudABI__
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inline
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std::string get_temp_file_name()
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{
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#if defined(__MINGW32__)
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char Path[MAX_PATH + 1];
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char FN[MAX_PATH + 1];
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do { } while (0 == GetTempPath(MAX_PATH+1, Path));
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do { } while (0 == GetTempFileName(Path, "libcxx", 0, FN));
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return FN;
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#elif defined(_WIN32)
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char Name[] = "libcxx.XXXXXX";
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if (_mktemp_s(Name, sizeof(Name)) != 0) abort();
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return Name;
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#else
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std::string Name;
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int FD = -1;
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do {
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Name = "libcxx.XXXXXX";
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FD = mkstemp(&Name[0]);
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if (FD == -1 && errno == EINVAL) {
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perror("mkstemp");
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abort();
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}
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} while (FD == -1);
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close(FD);
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return Name;
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#endif
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}
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#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
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inline
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std::wstring get_wide_temp_file_name()
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{
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return std::wstring_convert<std::codecvt_utf8_utf16<wchar_t> >().from_bytes(
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get_temp_file_name());
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}
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#endif // _LIBCPP_HAS_OPEN_WITH_WCHAR
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#endif // __CloudABI__
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#if defined(_CS_GNU_LIBC_VERSION)
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inline bool glibc_version_less_than(char const* version) {
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std::string test_version = std::string("glibc ") + version;
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size_t n = confstr(_CS_GNU_LIBC_VERSION, nullptr, (size_t)0);
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char *current_version = new char[n];
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confstr(_CS_GNU_LIBC_VERSION, current_version, n);
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bool result = strverscmp(current_version, test_version.c_str()) < 0;
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delete[] current_version;
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return result;
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}
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#endif // _CS_GNU_LIBC_VERSION
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#endif // PLATFORM_SUPPORT_H
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