CI: Call print_so_deps() on rpcapd in remote enabled build

[libpcap] / ftmacros.h

diff --git a/ftmacros.h b/ftmacros.h
index 8e3194934d8c2434f2ca5bf6a7ee9bf9d2c07600..2e367a35eaf1ae90da3e2292ec9275c8fafe38e4 100644 (file)
--- a/ftmacros.h
+++ b/ftmacros.h
@@ -43,12 +43,14 @@
  * to make non-POSIX APIs that we use unavailable.
  * XXX - is there no portable way to say "please pollute the
  * namespace to the maximum extent possible"?
- *
- * We also want to force crypt() to be declared on systems that use
- * GNU libc, such as most Linux distributions.
  */
 #if defined(sun) || defined(__sun)
-  #define __EXTENSIONS__
+  /*
+   * On Solaris Clang defines __EXTENSIONS__ automatically.
+   */
+  #ifndef __EXTENSIONS__
+    #define __EXTENSIONS__
+  #endif
 
   /*
    * We also need to define _XPG4_2 in order to get
@@ -58,8 +60,72 @@
   #define _XPG4_2
 #elif defined(_hpux) || defined(hpux) || defined(__hpux)
   #define _REENTRANT
-#elif defined(__linux__) || defined(linux) || defined(__linux)
-  #define _GNU_SOURCE
+
+  /*
+   * We need this to get the versions of socket functions that
+   * use socklen_t.  Define it only if it's not already defined,
+   * so we don't get redefinition warnings.
+   */
+  #ifndef _XOPEN_SOURCE_EXTENDED
+    #define _XOPEN_SOURCE_EXTENDED
+  #endif
+
+  /*
+   * XXX - the list of PA-RISC options for GCC makes it sound as if
+   * building code that uses a particular vintage of UNIX API/ABI
+   * is complicated:
+   *
+   *    https://gcc.gnu.org/onlinedocs/gcc/HPPA-Options.html
+   *
+   * See the description of the -munix flag.
+   *
+   * We probably want libpcap to work with programs built for any
+   * UN*X standard.  I'm not sure whether that's possible and, if
+   * it is, what sort of stuff it'd have to do.
+   *
+   * It might also be a requirement that we build with a special
+   * flag to allow the library to be used with threaded code, at
+   * least with HP's C compiler; hopefully doing so won't make it
+   * *not* work with *un*-threaded code.
+   */
+#else
+  /*
+   * Turn on _GNU_SOURCE to get everything GNU libc has to offer,
+   * including asprintf(), if we're using GNU libc.
+   *
+   * Unfortunately, one thing it has to offer is a strerror_r()
+   * that's not POSIX-compliant, but we deal with that in
+   * pcapint_fmt_errmsg_for_errno().
+   *
+   * We don't limit this to, for example, Linux and Cygwin, because
+   * this might, for example, be GNU/HURD or one of Debian's kFreeBSD
+   * OSes ("GNU/FreeBSD").
+   *
+   * Avoid redefining, same as below.
+   */
+  #ifndef _GNU_SOURCE
+    #define _GNU_SOURCE
+  #endif
+
+  /*
+   * We turn on both _DEFAULT_SOURCE and _BSD_SOURCE to try to get
+   * the BSD u_XXX types, such as u_int and u_short, defined.  We
+   * define _DEFAULT_SOURCE first, so that newer versions of GNU libc
+   * don't whine about _BSD_SOURCE being deprecated; we still have
+   * to define _BSD_SOURCE to handle older versions of GNU libc that
+   * don't support _DEFAULT_SOURCE.
+   *
+   * But, if it's already defined, don't define it, so that we don't
+   * get a warning of it being redefined if it's defined as, for
+   * example, 1.
+   */
+  #ifndef _DEFAULT_SOURCE
+    #define _DEFAULT_SOURCE
+  #endif
+  /* Avoid redefining _BSD_SOURCE if it's already defined as for ex. 1 */
+  #ifndef _BSD_SOURCE
+    #define _BSD_SOURCE
+  #endif
 #endif
 
 #endif