id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	phab_field
2086	Path detection failing	Anthony J. Bentley		"Calling pyrogenesis (instead of some path (be it relative or absolute) without being in the right dir) fails with the following error on Linux and BSD.
{{{
$ pyrogenesis
ERROR: Cannot find executable (expected at '/home/anthony/pyrogenesis')
Paths.cpp(176): Function call failed: return value was -110301 (No such file or directory)
Function call failed: return value was -110301 (No such file or directory)
Location: Paths.cpp:176 (Root)

Call stack:

(0x1b83f86ed5eb) 0x1b83f86ed5eb <_ZNSt12out_of_rangeD1Ev+342155> at pyrogenesis
(0x1b83f8690c11) 0x1b83f8690c11 <_ZStplIwSt11char_traitsIwESaIwEESbIT_T0_T1_ERKS6_S8_+285153> at pyrogenesis
(0x1b83f86916c2) 0x1b83f86916c2 <_ZStplIwSt11char_traitsIwESaIwEESbIT_T0_T1_ERKS6_S8_+287890> at pyrogenesis
(0x1b83f8691af2) 0x1b83f8691af2 <_ZStplIwSt11char_traitsIwESaIwEESbIT_T0_T1_ERKS6_S8_+288962> at pyrogenesis
(0x1b83f8424c7b) 0x1b83f8424c7b <_ZNSt6vectorImSaImEE14_M_fill_insertEN9__gnu_cxx17__normal_iteratorIPmS1_EEmRKm+240091> at pyrogenesis
(0x1b83f8427af4) 0x1b83f8427af4 <_ZNSt6vectorImSaImEE14_M_fill_insertEN9__gnu_cxx17__normal_iteratorIPmS1_EEmRKm+251988> at pyrogenesis
(0x1b83f840e668) 0x1b83f840e668 <_ZNSt6vectorImSaImEE14_M_fill_insertEN9__gnu_cxx17__normal_iteratorIPmS1_EEmRKm+148424> at pyrogenesis
(0x1b83f8410ce1) 0x1b83f8410ce1 <_ZNSt6vectorImSaImEE14_M_fill_insertEN9__gnu_cxx17__normal_iteratorIPmS1_EEmRKm+158273> at pyrogenesis
(0x1b83f824e8a2) 0x1b83f824e8a2 <__register_frame_info+9666> at pyrogenesis
(0x1b83f824f3b0) 0x1b83f824f3b0 <__register_frame_info+12496> at pyrogenesis
(0x1b83f824c261) 0x1b83f824c261 <+161> at pyrogenesis

errno = 0 (No such file or directory)
OS error = ?


(C)ontinue, (S)uppress, (B)reak, Launch (D)ebugger, or (E)xit?
}}}

However, if I'm in the same directory as the executable (e.g., with ""cd /usr/local/bin && pyrogenesis""), it works perfectly.

This issue is twofold:
 1. We don't use `INSTALLED_BINDIR` in [source:ps/trunk/source/ps/GameSetup/Paths.cpp#L156 Paths.cpp] `Paths::Root()`
 2. We should get the proper path of the executable if we are started like above (some ways on how to do that for Linux and some BSD variants [http://stackoverflow.com/questions/1023306/finding-current-executables-path-without-proc-self-exe/1024937#1024937 at stackoverflow])
    sys_ExecutablePathname() in [source:ps/trunk/source/lib/sysdep/os/ source/lib/sysdep/os/]{linux/linux.cpp,bsd/bsd.cpp}"	defect	new	Nice to Have	Backlog	Core engine		simple