begriffs open source - libnonstd/blob - configure

   1 #!/bin/sh
   2 set -eu
   3
   4 echo > config.mk
   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 if compiles "-D_POSIX_C_SOURCE=200112L" "
  17         #include <sys/types.h>
  18         int main(void)
  19         {
  20                 return (ssize_t)0;
  21         }"
  22 then
  23         echo "CFLAGS += -DHAVE_SSIZE_T" >> config.mk
  24 fi