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build: include sys/sysmacros.h for major() and minor()

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The definition of the major() and minor() macros are moving within glibc to
<sys/sysmacros.h>. Include this header when it is available to avoid the
following sorts of build-stopping messages:

qga/commands-posix.c: In function ‘dev_major_minor’:
qga/commands-posix.c:656:13: error: In the GNU C Library, "major" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "major", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "major", you should undefine it after including <sys/types.h>. [-Werror]
         *devmajor = major(st.st_rdev);
             ^~~~~~~~~~~~~~~~~~~~~~~~~~

qga/commands-posix.c:657:13: error: In the GNU C Library, "minor" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "minor", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "minor", you should undefine it after including <sys/types.h>. [-Werror]
         *devminor = minor(st.st_rdev);
             ^~~~~~~~~~~~~~~~~~~~~~~~~~

The additional include allows the build to complete on Fedora 26 (Rawhide)
with glibc version 2.24.90.

Signed-off-by: Christopher Covington <cov@codeaurora.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Christopher Covington 2016-12-28 15:04:33 -05:00 committed by Peter Maydell
parent 5bac3c39c8
commit 4d04351f4c
2 changed files with 22 additions and 0 deletions
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18
configure vendored
View File

@ -4710,6 +4710,20 @@ if test "$modules" = "yes" && test "$LD_REL_FLAGS" = ""; then
feature_not_found "modules" "Cannot find how to build relocatable objects"
fi
##########################################
# check for sysmacros.h
have_sysmacros=no
cat > $TMPC << EOF
#include <sys/sysmacros.h>
int main(void) {
return makedev(0, 0);
}
EOF
if compile_prog "" "" ; then
have_sysmacros=yes
fi
##########################################
# End of CC checks
# After here, no more $cc or $ld runs
@ -5676,6 +5690,10 @@ if test "$have_af_vsock" = "yes" ; then
echo "CONFIG_AF_VSOCK=y" >> $config_host_mak
fi
if test "$have_sysmacros" = "yes" ; then
echo "CONFIG_SYSMACROS=y" >> $config_host_mak
fi
# Hold two types of flag:
# CONFIG_THREAD_SETNAME_BYTHREAD - we've got a way of setting the name on
# a thread we have a handle to

4
include/sysemu/os-posix.h
View File

@ -34,6 +34,10 @@
#include <netdb.h>
#include <sys/un.h>
#ifdef CONFIG_SYSMACROS
#include <sys/sysmacros.h>
#endif
void os_set_line_buffering(void);
void os_set_proc_name(const char *s);
void os_setup_signal_handling(void);