Interestingly enough this breaks my rpmbuild (both rpmbuild and mock). (mostly with a modified f35 spec file):
cc -Isubprojects/libvhost-user/libvhost-user.a.p -Isubprojects/libvhost-user -I../subprojects/libvhost-user -fdiagnostics-color=auto -pipe -Wall -Winvalid-pch -std=gnu11 -O2 -g -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -m64 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -O2 -fexceptions -g -grecord-gcc-switches -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=zEC12 -mtune=z13 -fasynchronous-unwind-tables -fstack-clash-protection -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -DSTAP_SDT_V2 -fPIE -pthread -D_GNU_SOURCE -MD -MQ subprojects/libvhost-user/libvhost-user.a.p/libvhost-user.c.o -MF subprojects/libvhost-user/libvhost-user.a.p/libvhost-user.c.o.d -o subprojects/libvhost-user/libvhost-user.a.p/libvhost-user.c.o -c ../subprojects/libvhost-user/libvhost-user.c ../subprojects/libvhost-user/libvhost-user.c:43:10: fatal error: include/atomic.h: No such file or directory 43 | #include "include/atomic.h" | ^~~~~~~~~~~~~~~~~~ compilation terminated. and DEBUG: FAILED: subprojects/libvhost-user/libvhost-user-glib.a.p/libvhost-user-glib.c.o DEBUG: cc -Isubprojects/libvhost-user/libvhost-user-glib.a.p -Isubprojects/libvhost-user -I../subprojects/libvhost-user -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-4 -fdiagnostics-color=auto -Wall -Winvalid-pch -std=gnu11 -O2 -g -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -m64 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -O2 -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=zEC12 -mtune=z13 -fasynchronous-unwind-tables -fstack-clash-protection -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -DSTAP_SDT_V2 -fPIE -pthread -MD -MQ subprojects/libvhost-user/libvhost-user-glib.a.p/libvhost-user-glib.c.o -MF subprojects/libvhost-user/libvhost-user-glib.a.p/libvhost-user-glib.c.o.d -o subprojects/libvhost-user/libvhost-user-glib.a.p/libvhost-user-glib.c.o -c ../subprojects/libvhost-user/libvhost-user-glib.c DEBUG: In file included from ../subprojects/libvhost-user/libvhost-user-glib.h:19, DEBUG: from ../subprojects/libvhost-user/libvhost-user-glib.c:15: DEBUG: ../subprojects/libvhost-user/libvhost-user.h:23:10: fatal error: standard-headers/linux/virtio_ring.h: No such file or directory DEBUG: 23 | #include "standard-headers/linux/virtio_ring.h" DEBUG: | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ DEBUG: compilation terminated. DEBUG: [12/10271] /usr/bin/meson --internal exe --capture qemu-version.h -- /builddir/build/BUILD/qemu-6.0.94/scripts/qemu-version.sh /builddir/build/BUILD/qemu-6.0.94 qemu-6.0.94-20210819.0.2e47441a94ba.fc34 6.0.94 DEBUG: [13/10271] /usr/bin/meson --internal exe --capture qemu-img-cmds.h -- /builddir/build/BUILD/qemu-6.0.94/scripts/hxtool -h ../qemu-img-cmds.hx DEBUG: [14/10271] /usr/bin/meson --internal exe --capture hmp-commands-info.h -- /builddir/build/BUILD/qemu-6.0.94/scripts/hxtool -h ../hmp-commands-info.hx DEBUG: [15/10271] /usr/bin/meson --internal exe --capture hmp-commands.h -- /builddir/build/BUILD/qemu-6.0.94/scripts/hxtool -h ../hmp-commands.hx DEBUG: [16/10271] /usr/bin/meson --internal exe --capture qemu-options.def -- /builddir/build/BUILD/qemu-6.0.94/scripts/hxtool -h ../qemu-options.hx DEBUG: ninja: build stopped: subcommand failed. DEBUG: make: *** [Makefile:156: run-ninja] Error 1 DEBUG: error: Bad exit status from /var/tmp/rpm-tmp.fgqi3Y (%build) DEBUG: RPM build errors: DEBUG: Bad exit status from /var/tmp/rpm-tmp.fgqi3Y (%build) DEBUG: Child return code was: 1