* Separate Apple Clang from LLVM Clang
Apple Clang is a compiler of its own. All places
referring to "-apple" suffix have been updated.
* Hack to use a dash in 'apple-clang'
To be able to use autodoc from Sphinx we need
a valid Python name for the module that contains
Apple's Clang code.
* Updated packages to account for the existence of apple-clang
Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>
* Added unit test for XCode related functions
Co-authored-by: Gregory Becker <becker33@llnl.gov>
Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>
This commit removes the DYLD_LIBRARY_PATH variable from the default
modules.yaml for darwin. The rationale behind deleting this
environment variable is that paths in this environment variable take
precedence over the default locations of libraries (usually the
install path of the library), which can lead to linking errors in some
circumstances. For example, executables intended to link with Apple's
system BLAS and LAPACK will instead link to a spack-installed
implementation (e.g., OpenBLAS), causing runtime errors.
These errors are resolved by instead relying on paths set in
DYLD_FALLBACK_LIBRARY_PATH, which is lower in precedence than default
locations of libraries.
This commit adds default unwind providers to the default packages.yaml
for darwin. Compiler versions are supplied with the apple-unwind
package so that apple-unwind is only used with Apple's clang fork, and
not with LLVM's clang.
