Re: [Qemu-devel] [PATCH] linux-user: fix mq_* compilation problems

[Nathan Froyd <froydnj@codesourcery.com>]

mqueue.h is only available if __NR_mq_open is defined.  So don't include
it unconditionally.  Similarly, the mq_* family of syscalls depend on
__NR_mq_open.  Finally, the copy_{from,to}_user_mq_attr functions should
not be defined unconditionally, but only if we're going to use the mq_*
syscalls.

Signed-off-by: Nathan Froyd <froydnj@codesourcery.com
---
 linux-user/syscall.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 7b57323..c9276f6 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -28,7 +28,6 @@
 #include <fcntl.h>
 #include <time.h>
 #include <limits.h>
-#include <mqueue.h>
 #include <sys/types.h>
 #include <sys/ipc.h>
 #include <sys/msg.h>
@@ -847,6 +846,9 @@ static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
     return 0;
 }
 
+#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
+#include <mqueue.h>
+
 static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
                                               abi_ulong target_mq_attr_addr)
 {
@@ -884,6 +886,7 @@ static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
 
     return 0;
 }
+#endif
 
 /* do_select() must return target values and target errnos. */
 static abi_long do_select(int n,
@@ -6851,7 +6854,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
         break;
 #endif
 
-#ifdef TARGET_NR_mq_open
+#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
     case TARGET_NR_mq_open:
         {
             struct mq_attr posix_mq_attr;
-- 
1.6.2.4