From 8e0592fc7029090532e5269c6a6cc0efae9fa72d Mon Sep 17 00:00:00 2001
From: jiapengwang-code <jiapengwang@gmail.com>
Date: Fri, 19 Jun 2026 19:03:40 +1200
Subject: [PATCH] Expand installation guide links

Replace the placeholder INSTALL.md with a short installation overview, platform-specific build guide links, and the common autotools build commands.

Refs #32
---
 INSTALL.md | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/INSTALL.md b/INSTALL.md
index b591b8a666..4f22f446e9 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -1,2 +1,28 @@
+# Installation
 
-See [doc/build-\*.md](/doc)
+Bitgesell Core can be built from source on Linux, macOS, Windows, and BSD systems. The platform-specific build guides in [`doc/`](doc) contain the required dependencies and detailed instructions.
+
+## Platform build guides
+
+- [Unix/Linux](doc/build-unix.md)
+- [macOS](doc/build-osx.md)
+- [Windows](doc/build-windows.md)
+- [FreeBSD](doc/build-freebsd.md)
+- [OpenBSD](doc/build-openbsd.md)
+- [NetBSD](doc/build-netbsd.md)
+
+## Quick source build
+
+On supported Unix-like systems, the usual autotools flow is:
+
+```sh
+./autogen.sh
+./configure
+make
+make check
+sudo make install
+```
+
+Run `./configure --help` to review optional build flags before compiling.
+
+For deterministic release builds and platform-specific dependency notes, use the relevant guide linked above.