meson: generate m4 preprocessor from config.h (#8914)

1 files changed, 24 insertions, 0 deletions

diff --git a/tools/meson-apply-m4.sh b/tools/meson-apply-m4.sh
new file mode 100755
index 0000000000..6abe177ac5
--- /dev/null
+++ b/tools/meson-apply-m4.sh
@@ -0,0 +1,24 @@
+#!/bin/sh
+set -eu
+
+CONFIG=$1
+TARGET=$2
+
+if [ $# -ne 2 ]; then
+        echo 'Invalid number of arguments.'
+        exit 1
+fi
+
+if [ ! -f $CONFIG ]; then
+        echo "$CONFIG not found."
+        exit 2
+fi
+
+if [ ! -f $TARGET ]; then
+        echo "$TARGET not found."
+        exit 3
+fi
+
+DEFINES=$(awk '$1 == "#define" && $3 == "1" { printf "-D%s ", $2 }' $CONFIG)
+
+m4 -P $DEFINES $TARGET