build-sys: add script to compare config.h from meson and autotools

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/tools/compare-buildsys.sh b/tools/compare-buildsys.sh
new file mode 100755 (executable)
index 0000000..e88cbd5
--- /dev/null
+++ b/tools/compare-buildsys.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+FILTER="$1"
+
+MESON_CONFIG_H="build/config.h"
+AUTOCONF_CONFIG_H="./config.h"
+
+if [ ! -f $MESON_CONFIG_H ]; then
+       echo 'Meson is not ready in the build/ directory (try "meson build")'
+       exit 1
+fi
+
+if [ ! -f $AUTOCONF_CONFIG_H ]; then
+       echo 'Autotools are not ready (try "./autogen.sh; ./configure")'
+       exit 1
+fi
+
+TMPFILE_MESON="/tmp/util-linux-meson"
+TMPFILE_AUTOCONF="/tmp/util-linux-autoconf"
+
+GREP_PATTERN="#define "
+
+if [ "$FILTER" = "headers" ]; then
+       GREP_PATTERN="#define .*_H[[:blank:]]"
+fi
+
+echo "===MESON===" > $TMPFILE_MESON
+grep "$GREP_PATTERN" $MESON_CONFIG_H | sort >> $TMPFILE_MESON
+
+echo "===AUTOCONF===" > $TMPFILE_AUTOCONF
+grep "$GREP_PATTERN" $AUTOCONF_CONFIG_H | sort >> $TMPFILE_AUTOCONF
+
+diff --side-by-side $TMPFILE_AUTOCONF $TMPFILE_MESON
+
+rm -rf $TMPFILE_MESON $TMPFILE_AUTOCONF