spack/lib/spack/env
Andrew W Elble f1050c4be2
compiler wrappers: don't override -isystem with -I (#16077)
If the Spack compiler wrapper encounters any "-isystem" option, then
when adding include directories for Spack dependencies, Spack will
use "-isystem" instead of "-I". This prevents Spack-generated "-I"
options from overriding the "-isystem" options generated by the build
system. To ensure that build-system "-isystem" directories are
searched first, Spack places all of its inserted "-isystem"
directories after.

The new ordering of -isystem includes is:

* -isystem from build system (not system directories)
* -isystem from Spack
* -isystem from build system (for directories like /usr/include)

The prior order of "-I" arguments is preserved (although as of this
commit Spack no longer generates -I if -isystem is detected):

* -I from build system (not system directories)
* -I from Spack (only if there are no "-isystem" options)
* -I from build system (for directories like /usr/include)
2020-04-21 13:56:50 -07:00
..
arm Armcompiler (#9840) 2019-01-08 16:31:25 -08:00
case-insensitive Dependencies now work. Added libelf, libdwarf. 2013-02-18 23:46:04 -08:00
cce cc: clean up cray compilers, fix issues with case-insensitive filesystems (#10323) 2019-01-12 17:37:20 -08:00
clang compilers/clang: add flang (#5503) 2017-10-10 13:52:10 -07:00
fj Add Fujitsu compiler to Spack. (#11287) 2019-05-21 20:31:14 -05:00
gcc Fix #254: libtool & distutils want certain compiler names. 2015-12-19 02:06:47 -08:00
intel Fix #254: libtool & distutils want certain compiler names. 2015-12-19 02:06:47 -08:00
nag Add symlink for NAG Fortran Compiler 2016-01-19 13:07:07 -06:00
pgi Modifications to get PGI working 2016-03-03 16:50:51 -06:00
xl Fix #254: libtool & distutils want certain compiler names. 2015-12-19 02:06:47 -08:00
xl_r Add support for IBM threaded compilers: xl*_r (#2894) 2017-01-25 16:26:17 -07:00
c89 Dependencies now work. Added libelf, libdwarf. 2013-02-18 23:46:04 -08:00
c99 Dependencies now work. Added libelf, libdwarf. 2013-02-18 23:46:04 -08:00
c++ Dependencies now work. Added libelf, libdwarf. 2013-02-18 23:46:04 -08:00
cc compiler wrappers: don't override -isystem with -I (#16077) 2020-04-21 13:56:50 -07:00
cpp Dependencies now work. Added libelf, libdwarf. 2013-02-18 23:46:04 -08:00
f77 Fix for SPACK-35: Fortran not working properly 2014-07-09 01:28:23 -07:00
f90 Fix for SPACK-35: Fortran not working properly 2014-07-09 01:28:23 -07:00
f95 Fix for SPACK-35: Fortran not working properly 2014-07-09 01:28:23 -07:00
fc Fix for SPACK-35: Fortran not working properly 2014-07-09 01:28:23 -07:00
ftn Add ftn to lib/spack/env (#11180) 2019-04-17 13:12:25 -07:00
ld Dependencies now work. Added libelf, libdwarf. 2013-02-18 23:46:04 -08:00