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| /gem5/src/ | ||
| H A D | SConscript | diff 13706:4c1d26d1766e Wed Feb 20 20:43:00 EST 2019 Gabe Black <gabeblack@google.com> scons: Add a convenience method to set RPATH for local libraries. When linking in a dynamic library which is in the gem5 build directory, it's useful to set RPATH so that you don't have to set LD_LIBRARY_PATH when you run gem5 so that the dynamic linker can find it. Since it's tricky and not entirely obvious how to set up those paths correctly, this change adds a small convenience function which does that for you. It also handles situations where the same dynamic library may be linked into different binaries in different directories which each need a different relative RPATH. It does that by letting the environment for each binary set a construction variable which says how to get from that particular binary back to the build directory. This helper method then sets RPATH to start at $ORIGIN (the binary), to follow that relative path to the variant build directory, and then the per-library but not per-binary path to the library's directory. This change also adds the -z origin linker flag which makes the linker handle $ORIGIN properly. Change-Id: I45f4d72cd14396a73e0b963cea6a39d9bfb7f984 Reviewed-on: https://gem5-review.googlesource.com/c/16566 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Gabe Black <gabeblack@google.com> |
| /gem5/ | ||
| H A D | SConstruct | diff 13706:4c1d26d1766e Wed Feb 20 20:43:00 EST 2019 Gabe Black <gabeblack@google.com> scons: Add a convenience method to set RPATH for local libraries. When linking in a dynamic library which is in the gem5 build directory, it's useful to set RPATH so that you don't have to set LD_LIBRARY_PATH when you run gem5 so that the dynamic linker can find it. Since it's tricky and not entirely obvious how to set up those paths correctly, this change adds a small convenience function which does that for you. It also handles situations where the same dynamic library may be linked into different binaries in different directories which each need a different relative RPATH. It does that by letting the environment for each binary set a construction variable which says how to get from that particular binary back to the build directory. This helper method then sets RPATH to start at $ORIGIN (the binary), to follow that relative path to the variant build directory, and then the per-library but not per-binary path to the library's directory. This change also adds the -z origin linker flag which makes the linker handle $ORIGIN properly. Change-Id: I45f4d72cd14396a73e0b963cea6a39d9bfb7f984 Reviewed-on: https://gem5-review.googlesource.com/c/16566 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Gabe Black <gabeblack@google.com> |
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