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[llvm] [cmake] Add additional headers only if they exist

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Modify the add_header_files_for_glob() function to only add files
that do exist, rather than all matches of the glob.  This fixes CMake
error when one of the include directories (which happen to include
/usr/include) contain broken symlinks.

Differential Revision: https://reviews.llvm.org/D59632

llvm-svn: 357701
This commit is contained in:
Michal Gorny 2019-04-04 14:21:38 +00:00
parent dbbaf7f7ef
commit 35bbe71103
1 changed files with 9 additions and 1 deletions
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10
cmake/modules/LLVMProcessSources.cmake
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@ -30,7 +30,15 @@ endmacro(add_td_sources)
function(add_header_files_for_glob hdrs_out glob)
file(GLOB hds ${glob})
set(${hdrs_out} ${hds} PARENT_SCOPE)
set(filtered)
foreach(file ${hds})
# Explicit existence check is necessary to filter dangling symlinks
# out. See https://bugs.gentoo.org/674662.
if(EXISTS ${file})
list(APPEND filtered ${file})
endif()
endforeach()
set(${hdrs_out} ${filtered} PARENT_SCOPE)
endfunction(add_header_files_for_glob)
function(find_all_header_files hdrs_out additional_headerdirs)