Makefile: conditionalize ifaddrs.h inclusion

configure.ac

@@ -611,7 +611,12 @@ AC_CHECK_DECLS([PR_SET_NO_NEW_PRIVS], [], [], [#include <sys/prctl.h>])
 AC_CHECK_DECLS([PR_GET_NO_NEW_PRIVS], [], [], [#include <sys/prctl.h>])
 
 # Check for some headers
-AC_CHECK_HEADERS([sys/signalfd.h pty.h ifaddrs.h sys/memfd.h sys/personality.h utmpx.h sys/timerfd.h sys/resource.h])
+AC_CHECK_HEADERS([sys/signalfd.h pty.h sys/memfd.h sys/personality.h utmpx.h sys/timerfd.h sys/resource.h])
+
+AC_CHECK_HEADER([ifaddrs.h],
+	AM_CONDITIONAL(HAVE_IFADDRS_H, true)
+	AC_DEFINE(HAVE_IFADDRS_H, 1, [Have ifaddrs.h]),
+	AM_CONDITIONAL(HAVE_IFADDRS_H, false))
 
 # lookup major()/minor()/makedev()
 AC_HEADER_MAJOR

src/lxc/Makefile.am

@@ -132,9 +132,12 @@ liblxc_la_SOURCES = af_unix.c af_unix.h \
 		    version.h \
 		    $(LSM_SOURCES)
 
+if !HAVE_IFADDRS_H
+liblxc_la_SOURCES += ../include/ifaddrs.c ../include/ifaddrs.h
+endif
+
 if IS_BIONIC
-liblxc_la_SOURCES += ../include/ifaddrs.c ../include/ifaddrs.h \
-		     ../include/lxcmntent.c ../include/lxcmntent.h \
+liblxc_la_SOURCES += ../include/lxcmntent.c ../include/lxcmntent.h \
 		     ../include/openpty.c ../include/openpty.h
 endif