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--- a/configure.ac
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+++ b/configure.ac
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@@ -26,7 +26,11 @@ VIPS_MAJOR_VERSION=vips_major_version()
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VIPS_MINOR_VERSION=vips_minor_version()
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VIPS_MICRO_VERSION=vips_micro_version()
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VIPS_VERSION=vips_version()
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-VIPS_VERSION_STRING=$VIPS_VERSION-`date -u -r $srcdir/ChangeLog`
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+if test "x$SOURCE_DATE_EPOCH" = "x"; then
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+ VIPS_VERSION_STRING=$VIPS_VERSION-`date -u -r ChangeLog`
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+else
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+ VIPS_VERSION_STRING=$VIPS_VERSION-`LC_ALL=C date --utc --date="@$SOURCE_DATE_EPOCH"`
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+fi
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# libtool library versioning ... not user-visible (except as part of the
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# library file name) and does not correspond to major/minor/micro above
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