lowdown: Fix build on OSX 10.7

Fixes: https://trac.macports.org/ticket/73714

textproc/lowdown/Portfile

@@ -14,7 +14,7 @@ legacysupport.newest_darwin_requires_legacy 15
 name                lowdown
 categories          textproc
 version             3.0.1
-revision            0
+revision            1
 license             BSD
 
 description         simple markdown translator
@@ -35,6 +35,10 @@ checksums           rmd160  433b221d28fd092139131f02465803f257cd100f \
 depends_build-append \
                     port:bmake
 
+patch.pre_args-replace \
+                    -p0 -p1
+patchfiles          0001-configure-Use-portable-invocation-of-mktemp.patch
+
 configure.universal_args
 configure.pre_args  PREFIX=${prefix}
 configure.args      MANDIR=${prefix}/share/man

textproc/lowdown/files/0001-configure-Use-portable-invocation-of-mktemp.patch

@@ -0,0 +1,27 @@
+From 37823c474f10262438e55c931dd232e94a5c390a Mon Sep 17 00:00:00 2001
+From: commitmaniac <201806046+commitmaniac@users.noreply.github.com>
+Date: Mon, 23 Mar 2026 14:53:00 -0400
+Subject: [PATCH] configure: Use portable invocation of mktemp
+
+See: https://github.com/d99kris/heapusage/issues/19
+From: https://github.com/kristapsdz/oconfigure/pull/28
+---
+ configure | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure b/configure
+index e73c2dd..f1428e0 100755
+--- a/configure
++++ b/configure
+@@ -98,7 +98,7 @@ done
+ # exit.  This simplifies the script from needing to tidy up everything
+ # directly.
+ 
+-TMPROOT=$(mktemp -d) || exit 1
++TMPROOT=$(mktemp -d -t tmproot.XXXXXX) || exit 1
+ # shellcheck disable=SC2064
+ trap "rm -rf \"$TMPROOT\"" EXIT
+ 
+-- 
+2.53.0
+