Build error on macOS: no member named 'sem' in 'struct QemuSemaphore'

[cdelledonne]

Problem

When trying to build QEMU on macOS, I get the following error, in addition to #47:

[...]/qemu/hw/core/remote-port.c:496:47: error: no member named 'sem' in 'struct QemuSemaphore'
                sem_getvalue(&s->rx_queue.sem.sem, &sval);
                              ~~~~~~~~~~~~~~~ ^

which originates from the definition of QemuSemaphore that does not include sem when CONFIG_SEM_TIMEDWAIT is not defined: https://github.com/Xilinx/qemu/blob/1eb7d50646fb8f481893135986ca8028c1f6e732/include/qemu/thread-posix.h#L27-L36

To Reproduce

1. clone the repository
2. comment out #include <byteswap.h> in hw/core/remote-port-proto.c to temporarily get rid of #47
3. run

   mkdir build
   cd build
   ../configure --target-list=arm-softmmu --enable-fdt --disable-xen
   make

Environment

• OS: macOS 10.15.6
• Darwin kernel version: 19.6.0
• Compiler: Apple clang version 11.0.0

[edgarigl]

Hi,

I don't have easy access to a macOS system unfortunately. Any chance you could create a fix and submit a pull-request?

Thanks, Edgar

[cdelledonne]

Ok, I'll try to submit a PR soon.

[cdelledonne]

I just submitted #49 (that should fix #47) and #50 (that should fix this one)

[cdelledonne]

Closed with 2736c2b1a676fb3f6af87e41ec18e2ba5605ef56