- -A symbol=value append " "value to symbol
- -A append:symbol=value append value to symbol
- -A define:symbol=value define symbol to have value
- -A clear:symbol define symbol to be ''
- -A define:symbol define symbol to be 'define'
- -A eval:symbol=value define symbol to be eval of value
- -A prepend:symbol=value prepend value to symbol
- -A undef:symbol define symbol to be 'undef'
- -A undef:symbol= define symbol to be ''
+ -A append:symbol=value append value to symbol
+ -A symbol=value like append:, but with a separating space
+ -A define:symbol=value define symbol to have value
+ -A clear:symbol define symbol to be ''
+ -A define:symbol define symbol to be 'define'
+ -A eval:symbol=value define symbol to be eval of value
+ -A prepend:symbol=value prepend value to symbol
+ -A undef:symbol define symbol to be 'undef'
+ -A undef:symbol= define symbol to be ''
+ e.g.: -A prepend:libswanted='cl pthread '
+ -A ccflags=-DSOME_MACRO