Support configure script --enable-pipes option to enable pipes (|) in filenames
diff --git a/configure.ac b/configure.ac
index 671b66a..c86cc63 100644
--- a/configure.ac
+++ b/configure.ac
@@ -684,6 +684,18 @@
CFLAGS="$CFLAGS -DMAGICKCORE_HDRI_ENABLE=$magick_hdri_enable"
CPPFLAGS="$CPPFLAGS -DMAGICKCORE_HDRI_ENABLE=$magick_hdri_enable"
+# Enable pipes (|) in filenames.
+AC_ARG_ENABLE([pipes],
+ [AC_HELP_STRING([--enable-pipes],
+ [enable pipes (|) in filenames])],
+ [enable_pipes=$enableval],
+ [enable_pipes='no'])
+
+if test "$enable_pipes" = 'yes'; then
+ AC_DEFINE(PIPES_SUPPORT,1,[enable pipes (|) in filenames])
+ MAGICK_FEATURES="Pipes $MAGICK_FEATURES"
+fi
+
# Build a version of ImageMagick with assert statements.
AC_ARG_ENABLE([assert],
[AC_HELP_STRING([--disable-assert],