CMake 3.18 recommended

More earlier versions don't properly detect OpenSSL 3.0.
BTW, workarounds still exist

diff --git a/INSTALL.md b/INSTALL.md
index 027e14e21d407592d1bffc8e240e6953d88d934b..0927f514ed2e25f4ee3a9900a18016ec763c0f48 100644 (file)
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -8,7 +8,7 @@ To build and install OpenSSL GOST Engine, you will need
 
 * OpenSSL 3.0 development version
 * an ANSI C compiler
-* CMake (3.0 or newer)
+* CMake (3.0 or newer, 3.18 recommended)
 
 Here is a quick build guide:
 
@@ -28,6 +28,10 @@ instance:
 
     $ cmake -DOPENSSL_ROOT_DIR=/PATH/TO/OPENSSL/ ..
 
+Building against OpenSSL 3.0 requires openssl detection module
+(FindOpenSSL.cmake) from CMake 3.18 or higher. More earlier versions may have
+problems with it.
+
 If you use Visual Studio, you can also set `CMAKE_INSTALL_PREFIX` variable
 to set install path, like this: