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30e1fad926
Strict prototype are better for portability and to avoid bugs because it makes sure the compiler has the information to properly validate the arguments given when a function is called. This flag however need special care when checking for it, because the declaration for 'main' generated by autoconf cannot be a strict prototype so the detection would always see the flag as failing. This patch handles this by creating a dedicated macro for this detection which uses a good prototype because we're in a case where it is possible, so the detection will not always fail; it also makes sure to add the flag to CFLAG only at the end, to avoid falsely crashing any further test done in the configure script. Signed-off-by: Christophe CURIS <christophe.curis@free.fr>