begriffs open source - libnonstd/blob - configure

   1 #!/bin/sh
   2 set -eu
   3
   4 rm -f include/internal/ssize.h
   5
   6 compiles ()
   7 {
   8         stage="$(mktemp -d)"
   9         echo "$2" > "$stage/test.c"
  10         (cc -Werror "$1" -o "$stage/test" "$stage/test.c" >/dev/null 2>&1)
  11         cc_success=$?
  12         rm -rf "$stage"
  13         return $cc_success
  14 }
  15
  16 cd include/internal
  17 if compiles "-D_POSIX_C_SOURCE=200112L" "
  18         #include <sys/types.h>
  19         int main(void)
  20         {
  21                 return (ssize_t)0;
  22         }"
  23 then
  24         ln -s ssize{_posix,}.h
  25 else
  26         ln -s ssize{_ptrdiff,}.h
  27 fi
  28 cd -