f1050c4be2
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) |
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| clang | ||
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| gcc | ||
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