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-rw-r--r--configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 925846a3a9..dabcbcd78a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -775,7 +775,7 @@ AC_PATH_PROG(SPHINXBUILD,sphinx-build)
AC_CACHE_CHECK([for version of sphinx-build], sphinx_version,
changequote(, )dnl
[if test -n "$SPHINXBUILD"; then
- sphinx_version=`"$SPHINXBUILD" --version | sed 's/Sphinx (sphinx-build) \([0-9]\.[0-9]\.[0-9]\)/\1/'`;
+ sphinx_version=`"$SPHINXBUILD" --version 2>&1 | sed 's/Sphinx\( (sphinx-build)\)\? v\?\([0-9]\.[0-9]\.[0-9]\)/\2/' | head -n1`;
fi;
changequote([, ])dnl
])