Clone of https://github.com/NixOS/nixpkgs.git (to stress-test knotserver)
1--- a/configure 2+++ b/configure 3@@ -904,7 +904,7 @@ 4 #line 905 "configure" 5 #include "confdefs.h" 6 7-main(){return(0);} 8+int main(){return(0);} 9 EOF 10 if { (eval echo configure:910: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then 11 ac_cv_prog_cc_works=yes