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function(conflicting_var name)
message(WARNING
"-- Environment variable ${name} is set to $ENV{${name}}\n"
"This suggests that the variable is referring to a existing installation of SWI-Prolog. "
"This may conflict with building SWI-Prolog as this may cause the "
"build process to use components from such (older) installed version "
"of SWI-Prolog. Make sure to remove this environment from the "
"environment before building the system.")
endfunction()
if(CMAKE_EXECUTABLE_FORMAT STREQUAL "ELF" AND
DEFINED ENV{LD_PRELOAD} AND
"$ENV{LD_PRELOAD}" MATCHES swipl|swi-prolog)
conflicting_var(LD_PRELOAD)
endif()
if(UNIX)
if(APPLE)
if(DEFINED ENV{DYLD_LIBRARY_PATH} AND
"$ENV{DYLD_LIBRARY_PATH}" MATCHES swipl|swi-prolog)
conflicting_var(DYLD_LIBRARY_PATH)
endif()
else()
if( DEFINED ENV{LD_LIBRARY_PATH} AND
"$ENV{LD_LIBRARY_PATH}" MATCHES swipl|swi-prolog AND
NOT "$ENV{LD_LIBRARY_PATH}" MATCHES /root/parts/swi-prolog )
conflicting_var(LD_LIBRARY_PATH)
endif()
endif()
elseif(WIN32)
if(DEFINED ENV{PATH} AND
"$ENV{PATH}" MATCHES swipl|swi-prolog)
conflicting_var(PATH)
endif()
endif()
if(DEFINED ENV{SWI_HOME_DIR} AND
IS_DIRECTORY "$ENV{SWI_HOME_DIR}")
conflicting_var(SWI_HOME_DIR)
endif()
if(DEFINED ENV{SWIPL} AND
IS_DIRECTORY "$ENV{SWIPL}")
conflicting_var(SWIPL)
endif()
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