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Fix cross-compilation #1352

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merged 1 commit into from
Dec 7, 2020
Merged

Fix cross-compilation #1352

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10 changes: 8 additions & 2 deletions cmake/XRootDSystemCheck.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -100,7 +100,11 @@ compiler_define_if_found( HAVE_ET_COM_ERR_H HAVE_ET_COM_ERR_H )
#-------------------------------------------------------------------------------
# Check for the atomics
#-------------------------------------------------------------------------------
check_cxx_source_runs(
if (CMAKE_CROSSCOMPILING)
message(WARNING "Cannot detect atomics support when cross-compiling, assuming atmoics are available")
set(HAVE_ATOMICS ON)
else()
check_cxx_source_runs(
"
int main()
{
Expand All @@ -120,7 +124,9 @@ check_cxx_source_runs(
return 0;
}
"
HAVE_ATOMICS )
HAVE_ATOMICS )
endif()

option(EnableAtomicsIfPresent "EnableAtomicsIfPresent" ON)
if ( EnableAtomicsIfPresent )
compiler_define_if_found( HAVE_ATOMICS HAVE_ATOMICS )
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