mk: detect if notmuch headers & libs are available

Detect if notmuch is available by trying to compile a minimal go program
that uses the notmuch.h header and links to libnotmuch.so.

If that succeeds, set the default GOFLAGS value to -tags=notmuch.

Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Inwit <inwit@sindominio.net>

1 files changed, 20 insertions, 0 deletions

diff --git a/contrib/check-notmuch.sh b/contrib/check-notmuch.sh
new file mode 100755
index 00000000..6b5beb62
--- /dev/null
+++ b/contrib/check-notmuch.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+
+set -e
+
+tmp=$(mktemp -d)
+trap "rm -rf $tmp" EXIT
+
+cat > $tmp/src.go <<EOF
+package main
+
+// #cgo LDFLAGS: -lnotmuch
+// #include <notmuch.h>
+import "C"
+
+func main() {
+	C.notmuch_status_to_string(C.NOTMUCH_STATUS_SUCCESS)
+}
+EOF
+
+${GO:-go} build -o $tmp/out $tmp/src.go