configure: define posix source on cygwin

Some function definitions are missing without it, for example sigaction. Fixes ticket #5868
8 years ago · b7bd5b9794
parent 4fdcd2f188
commit b7bd5b9794
1 changed files with 1 additions and 0 deletions
--- a/1
+++ b/1
@ -4802,6 +4802,7 @@ case $target_os in
        objformat="win32"
        enable dos_paths
        enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
+        add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
        ;;
    *-dos|freedos|opendos)
        network_extralibs="-lsocket"