autogen: build with gperf 3.3

steps/autogen-5.18.16/files/gperf-3.3.patch

@@ -0,0 +1,21 @@
+SPDX-FileCopyrightText: Samuel Tyler <samuel@samuelt.me>
+
+SPDX-License-Identifier: GPL-3.0-or-later
+
+In gperf 3.3, a new set of #if .. #elif .. #endif is added. Obviously
+this sed then breaks the C preprocessor.
+
+It turns out these are unnecessary.
+
+--- a/autoopts/tpl/str2enum.tpl	2026-01-13 19:48:05.623459591 +1100
++++ b/autoopts/tpl/str2enum.tpl	2026-01-13 19:47:41.613458157 +1100
+@@ -811,9 +811,6 @@
+         -e '/GNUC_.*_INLINE/d' \
+         -e '/__attribute__.*inline/d' \
+         -e '/^#if.*== *32/,/^#endif/d' \
+-        -e '/^#ifdef/d' \
+-        -e '/^#else/d' \
+-        -e '/^#endif$/d' \
+         -e '/key = [=(. base-type-name)=]_hash/s/key = /key = (int)/' \
+         -e 's/^\(const [=(. base-type-name)=]_map_t\)/static inline \1/' \
+     > baseline

steps/autogen-5.18.16/pass1.sh

@@ -6,6 +6,8 @@
 noextract="autogen-5.18.16.tar.xz"
 
 src_prepare() {
+    default
+
     mkdir build
     mv ../autogen-5.18.16 build/src
     mv ../autogen-5.18.16.tar.xz build/
@@ -25,6 +27,7 @@ src_compile() {
 
     SKIP_MAIN=1 . ./bootstrap_tarball.sh
     prepare_tarball
+    patch -Np1 -i ../../gperf-3.3.patch -d build/autogen-5.18.16
     bootstrap_columns
     bootstrap_getdefs
     bootstrap_autogen
@@ -42,10 +45,10 @@ src_compile() {
     SOURCE_DIR="$PWD" ./config/bootstrap
     # Specify timeout to avoid non-reproducibility
     CPPFLAGS=-D_LARGEFILE64_SOURCE=1 ./configure \
-	--prefix="${FINALPREFIX}" \
-	--libdir="${FINALPREFIX}/lib/${TARGET}" \
-	--disable-shared \
-	--enable-timeout=15
+        --prefix="${FINALPREFIX}" \
+        --libdir="${FINALPREFIX}/lib/${TARGET}" \
+        --disable-shared \
+        --enable-timeout=15
     touch doc/agdoc.texi # build later
     make -j1 CFLAGS=-Wno-error