The C standard specifies that zero-length format strings are allowed.
---
 configure |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/configure b/configure
index f557482..e20bb06 100755
--- a/configure
+++ b/configure
@@ -2978,6 +2978,7 @@ check_cflags -Wdeclaration-after-statement
 check_cflags -Wall
 check_cflags -Wno-parentheses
 check_cflags -Wno-switch
+check_cflags -Wno-format-zero-length
 check_cflags -Wdisabled-optimization
 check_cflags -Wpointer-arith
 check_cflags -Wredundant-decls
-- 
1.7.1

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