506e74f53a
In order to handle system security constraints during GCC build and test and that most platform versions cannot link to libgcc_eh since the unwinder there is incompatible with the system one. 1. We make the support functions weak definitions. 2. We include them as a CRT for platform conditions that do not allow libgcc_eh. 3. We ensure that the weak symbols are exported from DSOs (which includes exes on Darwin) so that the dynamic linker will pick one instance (which avoids duplication of trampoline caches). PR libgcc/113403 gcc/ChangeLog: * config/darwin.h (DARWIN_SHARED_WEAK_ADDS, DARWIN_WEAK_CRTS): New. (REAL_LIBGCC_SPEC): Move weak CRT handling to separate spec. * config/i386/darwin.h (DARWIN_HEAP_T_LIB): New. * config/i386/darwin32-biarch.h (DARWIN_HEAP_T_LIB): New. * config/i386/darwin64-biarch.h (DARWIN_HEAP_T_LIB): New. * config/rs6000/darwin.h (DARWIN_HEAP_T_LIB): New. libgcc/ChangeLog: * config.host: Build libheap_t.a for i686/x86_64 Darwin. * config/aarch64/heap-trampoline.c (HEAP_T_ATTR): New. (allocate_tramp_ctrl): Allow a target to build this as a weak def. (__gcc_nested_func_ptr_created): Likewise. * config/i386/heap-trampoline.c (HEAP_T_ATTR): New. (allocate_tramp_ctrl): Allow a target to build this as a weak def. (__gcc_nested_func_ptr_created): Likewise. * config/t-darwin: Build libheap_t.a (a CRT with heap trampoline support). |
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| .github | ||
| c++tools | ||
| config | ||
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| fixincludes | ||
| gcc | ||
| gnattools | ||
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| libgfortran | ||
| libgm2 | ||
| libgo | ||
| libgomp | ||
| libgrust | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
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| libquadmath | ||
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| libstdc++-v3 | ||
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| .dir-locals.el | ||
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| libtool.m4 | ||
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| ltversion.m4 | ||
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| Makefile.def | ||
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This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.