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…823) The modern glibc from 2.34 had two breaking changes: move all api in lib{pthread,dl,rt}.so into libc.so, new static start up code breaking the runtime compatibility for old glibc (<2.34). See https://developers.redhat.com/articles/2021/12/17/why-glibc-234-removed-libpthread for more info. This commit has 3 changes to overcome these changes: - override gcc path to redefine glibc symbols on the fly in the generated .o by graalvm when linking - provide a dynamic startup code to support both old and modern runtime glibc - add needed dynamic libraries: lib{pthread,rt,dl}.so.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
|
|
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| /* ref: | ||
| * https://elixir.bootlin.com/glibc/glibc-2.37.9000/source/csu/libc-start.c | ||
| * https://elixir.bootlin.com/glibc/glibc-2.33.9000/source/csu/elf-init.c#L68 | ||
| */ | ||
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| #define _GNU_SOURCE | ||
| #include <dlfcn.h> | ||
| #include <stdint.h> | ||
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| __asm__(".symver dlsym,dlsym@GLIBC_2.2.5"); | ||
| __asm__(".symver dlvsym,dlvsym@GLIBC_2.2.5"); | ||
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| /* These magic symbols are provided by the linker. */ | ||
| extern void (*__init_array_start[])(int, char **, char **) __attribute__ ((visibility ("hidden"))); | ||
| extern void (*__init_array_end[])(int, char **, char **) __attribute__ ((visibility ("hidden"))); | ||
| extern void _init(void); | ||
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| /* These functions are passed to __libc_start_main by the startup code. | ||
| These get statically linked into each program. */ | ||
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| static void | ||
| __libc_csu_init(const int argc, char **const argv, char **const envp) | ||
| { | ||
| _init(); | ||
| const __auto_type size = __init_array_end - __init_array_start; | ||
| for (__auto_type i = 0; i < size; ++i) | ||
| (*__init_array_start[i])(argc, argv, envp); | ||
| } | ||
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| int | ||
| __dynamic_libc_start_main(int (*const main)(int, char **, char **), | ||
| const int argc, | ||
| char ** const argv, | ||
| __typeof(&__libc_csu_init) init, | ||
| void (*const fini)(void), | ||
| void (*const rtld_fini)(void), | ||
| void (*const stack_end)) | ||
| { | ||
| _Static_assert(sizeof(uintptr_t) >= sizeof(void*), "uintptr_t should contain a object pointer"); | ||
| _Static_assert(sizeof(uintptr_t) <= sizeof(&__dynamic_libc_start_main), "function pointer should contain an uintptr_t"); | ||
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| const __auto_type __libc_start_main = (__typeof(&__dynamic_libc_start_main))(uintptr_t)dlsym(RTLD_DEFAULT, "__libc_start_main"); | ||
| if (!dlvsym(RTLD_DEFAULT, "__libc_start_main", "GLIBC_2.34")) { | ||
| init = &__libc_csu_init; // old runtime glibc, ver < 2.34 | ||
| } | ||
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| return __libc_start_main(main, argc, argv, init, fini, rtld_fini, stack_end); | ||
| } |
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| @@ -0,0 +1,27 @@ | ||
| #!/bin/sh | ||
|
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| # Licensed to the Apache Software Foundation (ASF) under one | ||
| # or more contributor license agreements. See the NOTICE file | ||
| # distributed with this work for additional information | ||
| # regarding copyright ownership. The ASF licenses this file | ||
| # to you under the Apache License, Version 2.0 (the | ||
| # "License"); you may not use this file except in compliance | ||
| # with the License. You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, | ||
| # software distributed under the License is distributed on an | ||
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| # KIND, either express or implied. See the License for the | ||
| # specific language governing permissions and limitations | ||
| # under the License. | ||
|
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| set -euf | ||
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| base=$(dirname -- "$0") | ||
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| # fix glibc api version on the fly | ||
| find . -name '*.o' -print0 | xargs -0rn 1 objcopy --redefine-syms="$base/glibc.redef" | ||
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| exec gcc "$@" |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,35 @@ | ||
| # Licensed to the Apache Software Foundation (ASF) under one | ||
| # or more contributor license agreements. See the NOTICE file | ||
| # distributed with this work for additional information | ||
| # regarding copyright ownership. The ASF licenses this file | ||
| # to you under the Apache License, Version 2.0 (the | ||
| # "License"); you may not use this file except in compliance | ||
| # with the License. You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, | ||
| # software distributed under the License is distributed on an | ||
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| # KIND, either express or implied. See the License for the | ||
| # specific language governing permissions and limitations | ||
| # under the License. | ||
| __libc_start_main __dynamic_libc_start_main | ||
| clock_gettime clock_gettime@GLIBC_2.2.5 | ||
| dlopen dlopen@GLIBC_2.2.5 | ||
| dlsym dlsym@GLIBC_2.2.5 | ||
| memcpy memcpy@GLIBC_2.2.5 | ||
| posix_spawn posix_spawn@GLIBC_2.2.5 | ||
| pthread_attr_getguardsize pthread_attr_getguardsize@GLIBC_2.2.5 | ||
| pthread_attr_getstack pthread_attr_getstack@GLIBC_2.2.5 | ||
| pthread_attr_setstacksize pthread_attr_setstacksize@GLIBC_2.2.5 | ||
| pthread_condattr_setclock pthread_condattr_setclock@GLIBC_2.3.3 | ||
| pthread_create pthread_create@GLIBC_2.2.5 | ||
| pthread_getattr_np pthread_getattr_np@GLIBC_2.2.5 | ||
| pthread_join pthread_join@GLIBC_2.2.5 | ||
| pthread_kill pthread_kill@GLIBC_2.2.5 | ||
| pthread_setname_np pthread_setname_np@GLIBC_2.12 | ||
| sem_destroy sem_destroy@GLIBC_2.2.5 | ||
| sem_init sem_init@GLIBC_2.2.5 | ||
| sem_post sem_post@GLIBC_2.2.5 | ||
| sem_wait sem_wait@GLIBC_2.2.5 |
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