m4: Use -U and -D in cc_fortify Not just -D. This is to test the same thing that gets used.

m4: Remove pthread from tests

m4: Avoid _FORTIFY_SOURCE redefinition warnings Some source based distros like Gentoo already enable -D_FORTIFY_SOURCE=2 by default resulting in the following warnings during build: <command-line>:0:0: warning: "_FORTIFY_SOURCE" redefined <built-in>: note: this is the location of the previous definition Patch by Eray Aslan

configure: hardening logic is backwards Before this change, the argument parsing was busted. The --help string only compounded the incorrect behavior by suggesting that --disable-hardening could take a yes/no argument. | before | after ------------------------------+----------+-------- <no option> | enable | enable --enable-hardening | disable | enable --enable-hardening=yes | disable | enable --enable-hardening=no | enable | disable --disable-hardening | enable | disable --disable-hardening=yes | error | error --disable-hardening=no | error | error

configure: Check for hardening flags