The code that collect2 generates, compiles and links into applications and shared libraries to initialize constructors and register DWARF tables is built with the compiler options used to invoke the linker. If the compiler options change the visibility from default, the library initialization routines will not be visible and this can prevent initialization.
This patch checks if the command line sets visibiliity and then adds
GCC pragmas to the initialization code generated by collect2 if
necessary to define the visibility on global, exported functions as default.
Bootstrapped on powerpc-ibm-aix7.2.0.0
Thanks, David
gcc/ChangeLog:
2020-09-26 David Edelsohn <dje....@gmail.com>
Clement Chigot <clement.chi...@atos.com>
* collect2.c (visibility_flag): New.
(main): Detect -fvisibility.
(write_c_file_stat): Push and pop default visibility.
0001-aix-collect2-visibility.patch
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