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use DYLD_FALLBACK_LIBRARY_PATH for dylib_path_envvar on macOS #6355

Merged
merged 1 commit into from
Jan 2, 2019
Merged

use DYLD_FALLBACK_LIBRARY_PATH for dylib_path_envvar on macOS #6355

merged 1 commit into from
Jan 2, 2019

Commits on Dec 27, 2018

  1. use DYLD_FALLBACK_LIBRARY_PATH for dylib_path_envvar on macOS 

    When loading and linking a dynamic library or bundle, dlopen
searches in LD_LIBRARY_PATH, DYLD_LIBRARY_PATH, PWD, and
DYLD_FALLBACK_LIBRARY_PATH.
In the Mach-O format, a dynamic library has an "install path."
Clients linking against the library record this path, and the
dynamic linker, dyld, uses it to locate the library.
dyld searches DYLD_LIBRARY_PATH *before* the install path.
dyld searches DYLD_FALLBACK_LIBRARY_PATH only if it cannot
find the library in the install path.
Setting DYLD_LIBRARY_PATH can easily have unintended
consequences.

See https://users.rust-lang.org/t/subprocess-and-dynamic-library-linking-problem-interaction/7873/10
See https://trac.macports.org/ticket/57692
    @MarcusCalhoun-Lopez
    MarcusCalhoun-Lopez committed Dec 27, 2018
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