update install instructions

site/pages/install.html

@@ -7,10 +7,10 @@
     but requires compilation and testing on many platforms. It's guaranteed to work on Fedora Linux and probably works in most other Linuxes;
     MacOS is a <i>possibility</i>. Windows, being too stone-age for POSIX, probably won't be able to run Sitix.<br><br>
     At the moment, Sitix has no prebuilt binaries; I hope to include RPM/DEB packages in the next release.<br>To install it, you'll need to clone
-    <a href="https://github.com/LinuxRocks2000/sitix-rewrite">the Github repository</a>, run <code>./build.sh</code>, and (assuming the build completes successfully)
-    copy the generated <code>sitix</code> binary to some PATH-accessible location (<code>/usr/bin</code> is a good bet). Sitix requires a C++20-compatible
-    G++ (usually included with the gcc package); it has no other dependencies. Sitix is theoretically cross-compilable to Windows, but I have no intention of ever officially supporting it;
-    Microsoft doesn't deserve it.
+    <a href="https://github.com/LinuxRocks2000/sitix-rewrite">the Github repository</a>, create a <code>build</code> directory for CMake, run <code>cmake ..</code> inside that new build directory,
+    <code>cmake --build .</code>, and (assuming the build completes successfully: if it doesn't, submit an issue!) copy the generated <code>sitix</code> binary to some PATH-accessible location
+    (<code>/usr/bin</code> is a good bet). Sitix requires a C++20-compatible G++ (usually included with the gcc package); it has no other dependencies. Sitix is
+    theoretically cross-compilable to Windows, but I have no intention of ever officially supporting it; Microsoft doesn't deserve it.
 </div>
 <div class="text">
     Once you've got Sitix installed, see <a href="[^baseurl]/pages/usage.html">Usage</a>.