Makefile: add `make install` (native jerboa + jmcp/jlsp links → ~/.local/bin)

ober

71e6cfd51e85c54d040026d6e6ba49ab9da053e2

diff --git a/Makefile b/Makefile
index 078f86b..c43b894 100644
--- a/Makefile
+++ b/Makefile
@@ -224,6 +224,21 @@ jerboa-smoke: jerboa
 	rm -f /tmp/jms.ss; \
 	[ $$fail -eq 0 ] && echo "jerboa-smoke: PASS" || { echo "jerboa-smoke: FAIL" >&2; exit 1; }
 
+# Install the native multicall binary + jmcp/jlsp symlinks into PREFIX/bin.
+# Defaults to ~/.local/bin; override e.g. `make install PREFIX=/usr/local`.
+# Copies what `make jerboa` produced in dist/ (run that first).
+PREFIX ?= $(HOME)/.local
+BINDIR ?= $(PREFIX)/bin
+.PHONY: install
+install:
+	@test -x "$(CURDIR)/dist/jerboa" || { echo "ERROR: dist/jerboa not built — run 'make jerboa' first" >&2; exit 1; }
+	@mkdir -p "$(BINDIR)"
+	@install -m 0755 "$(CURDIR)/dist/jerboa" "$(BINDIR)/jerboa"
+	@ln -sf jerboa "$(BINDIR)/jmcp"
+	@ln -sf jerboa "$(BINDIR)/jlsp"
+	@echo "Installed: $(BINDIR)/{jerboa,jmcp,jlsp}"
+	@case ":$$PATH:" in *":$(BINDIR):"*) ;; *) echo "NOTE: $(BINDIR) is not on PATH — add it to use these commands" >&2 ;; esac
+
 # ── Cross-compiled multicall binary ──────────────────────────────────────────
 # Builds dist/<os-arch>/{jerboa,jmcp,jlsp,jerbuild} for a foreign target, all
 # four modes runnable on that target. The xpatch retargets the host Chez's