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-rw-r--r--configure.ac4
1 files changed, 4 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index db134a2f35b..13b339eaaff 100644
--- a/configure.ac
+++ b/configure.ac
@@ -140,6 +140,10 @@ AX_GCC_BUILTIN([__builtin_popcount])
AX_GCC_BUILTIN([__builtin_popcountll])
AX_GCC_BUILTIN([__builtin_unreachable])
+AX_GCC_FUNC_ATTRIBUTE([flatten])
+AX_GCC_FUNC_ATTRIBUTE([format])
+AX_GCC_FUNC_ATTRIBUTE([packed])
+
AM_CONDITIONAL([GEN_ASM_OFFSETS], test "x$GEN_ASM_OFFSETS" = xyes)
dnl Make sure the pkg-config macros are defined