begriffs open source - libnonstd/blob - configure

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