platform.h: tweaks for cygwin

Signed-off-by: Denys Vlasenko <[email protected]>

include/platform.h

@@ -116,7 +116,7 @@
 
 /* Make all declarations hidden (-fvisibility flag only affects definitions) */
 /* (don't include system headers after this until corresponding pop!) */
-#if __GNUC_PREREQ(4,1)
+#if __GNUC_PREREQ(4,1) && !defined(__CYGWIN__)
 # define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN _Pragma("GCC visibility push(hidden)")
 # define POP_SAVED_FUNCTION_VISIBILITY              _Pragma("GCC visibility pop")
 #else
@@ -329,6 +329,10 @@ typedef unsigned smalluint;
 # endif
 #endif
 
+#if defined(__CYGWIN__)
+# define MAXSYMLINKS SYMLOOP_MAX
+#endif
+
 
 /* ---- Who misses what? ------------------------------------ */
 
@@ -389,6 +393,15 @@ typedef unsigned smalluint;
 # undef HAVE_NET_ETHERNET_H
 #endif
 
+#if defined(__CYGWIN__)
+# undef HAVE_CLEARENV
+# undef HAVE_FDPRINTF
+# undef HAVE_MEMRCHR
+# undef HAVE_PTSNAME_R
+# undef HAVE_STRVERSCMP
+# undef HAVE_UNLOCKED_LINE_OPS
+#endif
+
 /* These BSD-derived OSes share many similarities */
 #if (defined __digital__ && defined __unix__) \
  || defined __APPLE__ \

libbb/Kbuild.src

@@ -97,7 +97,6 @@ lib-y += strrstr.o
 lib-y += time.o
 lib-y += trim.o
 lib-y += u_signal_names.o
-lib-y += udp_io.o
 lib-y += uuencode.o
 lib-y += vdprintf.o
 lib-y += verror_msg.o
@@ -127,6 +126,15 @@ lib-$(CONFIG_FEATURE_MTAB_SUPPORT) += mtab.o
 lib-$(CONFIG_UNICODE_SUPPORT) += unicode.o
 lib-$(CONFIG_FEATURE_CHECK_NAMES) += die_if_bad_username.o
 
+lib-$(CONFIG_NC) += udp_io.o
+lib-$(CONFIG_DNSD) += udp_io.o
+lib-$(CONFIG_NTPD) += udp_io.o
+lib-$(CONFIG_TFTP) += udp_io.o
+lib-$(CONFIG_TFTPD) += udp_io.o
+lib-$(CONFIG_TCPSVD) += udp_io.o
+lib-$(CONFIG_UDPSVD) += udp_io.o
+lib-$(CONFIG_TRACEROUTE) += udp_io.o
+
 lib-$(CONFIG_LOSETUP) += loop.o
 lib-$(CONFIG_FEATURE_MOUNT_LOOP) += loop.o