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[Qemu-devel] [PULL 24/54] compiler.h: Add an explicit check for the comp
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 24/54] compiler.h: Add an explicit check for the compiler version |
Date: |
Wed, 12 Dec 2018 16:22:45 +0100 |
From: Thomas Huth <address@hidden>
The questions about our minimum compiler requirement pops up every
couple of months, and we then have to recall the details each time.
So let's document this in a proper way, by adding a comment and
check for the right compiler version to our compiler.h header.
Signed-off-by: Thomas Huth <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
include/qemu/compiler.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h
index 6b92710..6f32ec2 100644
--- a/include/qemu/compiler.h
+++ b/include/qemu/compiler.h
@@ -22,6 +22,14 @@
# define QEMU_GNUC_PREREQ(maj, min) 0
#endif
+/*
+ * We need at least GCC 4.1 for atomics support. Clang also supports these,
+ * and reports itself as GCC 4.2, so it passes this check, too.
+ */
+#if !QEMU_GNUC_PREREQ(4, 1)
+#error QEMU needs a compiler that is compatible with GCC v4.1 or newer
+#endif
+
#define QEMU_NORETURN __attribute__ ((__noreturn__))
#define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
--
1.8.3.1
- [Qemu-devel] [PULL 04/54] checkpatch: check Signed-off-by in --mailback mode, (continued)
- [Qemu-devel] [PULL 04/54] checkpatch: check Signed-off-by in --mailback mode, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 09/54] memory: avoid unnecessary coalesced_io_del operations, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 08/54] memory: extract flat_range_coalesced_io_{del, add}, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 14/54] block/iscsi: fix ioctl cancel use-after-free, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 05/54] checkpatch: improve handling of multiple patches or files, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 20/54] build-sys: build with Vista API by default, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 07/54] pam: wrap MemoryRegion initialization in a transaction, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 03/54] checkpatch: fix premature exit when no input or --mailback, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 06/54] checkpatch: colorize output to terminal, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 25/54] qemu/queue.h: do not access tqe_prev directly, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 24/54] compiler.h: Add an explicit check for the compiler version,
Paolo Bonzini <=
- [Qemu-devel] [PULL 13/54] block/iscsi: take iscsilun->mutex in iscsi_timed_check_events(), Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 16/54] esp-pci: Fix status register write erase control, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 15/54] block/iscsi: cancel libiscsi task when ABORT TASK TMF completes, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 02/54] vhost-user-bridge: fix "unknown type name" compilation error, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 26/54] vfio: make vfio_address_spaces static, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 22/54] test: execute g_test_run when tests are skipped, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 17/54] scsi: esp: Defer command completion until previous interrupts have been handled, Paolo Bonzini, 2018/12/12
- [Qemu-devel] [PULL 21/54] RFC: qga: drop < Vista compatibility, Paolo Bonzini, 2018/12/12