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Better linking #8115

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merged 3 commits into from
Dec 10, 2019
Merged

Better linking #8115

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f9fbf70
Enabled `ld` for GCC.
excitoon Dec 10, 2019
d7b2765
Better linking in both GCC and Clang.
excitoon Dec 10, 2019
c181fdc
Update tools.cmake
alexey-milovidov Dec 10, 2019
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29 changes: 26 additions & 3 deletions cmake/tools.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -27,11 +27,34 @@ option (LINKER_NAME "Linker name or full path")
find_program (LLD_PATH NAMES "ld.lld" "lld" "lld-${COMPILER_VERSION_MAJOR}")
find_program (GOLD_PATH NAMES "ld.gold" "gold")

# We prefer LLD linker over Gold or BFD.

if (NOT LINKER_NAME)
if (LLD_PATH)
set (LINKER_NAME "lld")
elseif (GOLD_PATH)
set (LINKER_NAME "gold")
# GCC driver requires one of supported linker names like "lld".
# Clang driver simply allows full linker path.

if (COMPILER_GCC)
get_filename_component(LLD_BASE_NAME ${LLD_PATH} NAME)
if (LLD_BASE_NAME STREQUAL ld.lld)
set (LINKER_NAME "lld")
endif ()
else ()
set (LINKER_NAME ${LLD_PATH})
endif ()
endif ()
endif ()

if (NOT LINKER_NAME)
if (GOLD_PATH)
if (COMPILER_GCC)
get_filename_component(GOLD_BASE_NAME ${GOLD_PATH} NAME)
if (GOLD_BASE_NAME STREQUAL ld.gold)
set (LINKER_NAME "gold")
endif ()
else ()
set (LINKER_NAME ${GOLD_PATH})
endif ()
endif ()
endif ()

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