[Webkit-unassigned] [Bug 138420] Undefined reference to `environ' when linking libgtest.so on FreeBSD

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=138420

--- Comment #9 from Ting-Wei Lan <lantw44 at gmail.com> ---
crt1.o contains the entrypoint of a C program, _start function. _start function makes argc, argv, environ and possibly other initialization works, and calls main function. environ global variable is in crt1.o on FreeBSD.

crt1.c, the file containing _start function:
http://svn.freebsd.org/base/releng/10.1/lib/csu/amd64/crt1.c

ignore_init.c, the file included by crt1.c and containing environ variable:
http://svn.freebsd.org/base/releng/10.1/lib/csu/common/ignore_init.c


When using a C compiler driver to make an executable, crt1.o and other crt*.o files are automatically added to the linker arguments. This can be found by running 'cc -v'.

gtest doesn't link to it because it is a shared library. It is not an executable and it does not have a vaild entrypoint.

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