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macro(assert_var_defined varname)
if(NOT DEFINED ${varname})
message(SEND_ERROR "${varname} is not defined.")
endif()
endmacro()
macro(assert_vars_strequal varname exp_varname)
if(ARGC LESS 3 OR NOT "${ARGV2}" STREQUAL "ALLOW_UNDEFINED")
assert_var_defined(${varname})
endif()
if(NOT ${varname} STREQUAL ${exp_varname})
message(SEND_ERROR "${varname} is '${${varname}}', expecting '${${exp_varname}}'.")
endif()
endmacro()
macro(assert_var_str_value varname value)
if(ARGC LESS 3 OR NOT "${ARGV2}" STREQUAL "ALLOW_UNDEFINED")
assert_var_defined(${varname})
endif()
set(_value_var "${value}")
if(NOT ${varname} STREQUAL _value_var)
message(SEND_ERROR "${varname} is '${${varname}}', expecting '${value}'.")
endif()
endmacro()
macro(assert_var_num_value varname value)
if(ARGC LESS 3 OR NOT "${ARGV2}" STREQUAL "ALLOW_UNDEFINED")
assert_var_defined(${varname})
endif()
set(_value_var "${value}")
if(NOT ${varname} EQUAL _value_var)
message(SEND_ERROR "${varname} is '${${varname}}', expecting '${value}'.")
endif()
endmacro()
macro(assert_var_bool_value varname value)
if(ARGC LESS 3 OR NOT "${ARGV2}" STREQUAL "ALLOW_UNDEFINED")
assert_var_defined(${varname})
endif()
if(${value} AND NOT ${varname})
message(FATAL_ERROR "${varname} was FALSE")
elseif(${varname} AND NOT ${value})
message(FATAL_ERROR "${varname} was TRUE")
endif()
endmacro()
macro(assert_var_relative_path varname)
if(ARGC LESS 2 OR NOT "${ARGV1}" STREQUAL "ALLOW_UNDEFINED")
assert_var_defined(${varname})
endif()
if(DEFINED ${varname} AND IS_ABSOLUTE "${${varname}}")
message(SEND_ERROR "${varname} (${${varname}}) should be a relative path, but is absolute.")
endif()
endmacro()
macro(assert_var_absolute_path varname)
if(ARGC LESS 2 OR NOT "${ARGV1}" STREQUAL "ALLOW_UNDEFINED")
assert_var_defined(${varname})
endif()
if(DEFINED ${varname} AND NOT IS_ABSOLUTE "${${varname}}")
message(SEND_ERROR "${varname} (${${varname}}) should be an absolute path, but is relative.")
endif()
endmacro()
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