Fix:

Flow control statements are not properly nested.

https://github.com/Kst-plot/kst/commit/6a41644c39ffb394c350de3dacbacdffa54a0a2a
--- CMakeLists.txt.orig	2024-12-12 18:47:24.000000000 -0600
+++ CMakeLists.txt	2024-12-12 18:47:24.000000000 -0600
@@ -112,10 +112,10 @@
         elseif(GCC_VERSION VERSION_EQUAL 4.7 OR GCC_VERSION VERSION_GREATER 4.7)
             set(ver 4.7)
             set(md5 de6e8dbab1bb17eee6057941fddc93e3)
-        else(GCC_VERSION VERSION_EQUAL 4.6 OR GCC_VERSION VERSION_GREATER 4.6)
+        elseif(GCC_VERSION VERSION_EQUAL 4.6 OR GCC_VERSION VERSION_GREATER 4.6)
             set(ver 4.6)
             set(md5 70d8670af9c21eb8fb466654c95d8e4d)
-        else(GCC_VERSION VERSION_GREATER 4.4)
+        elseif(GCC_VERSION VERSION_GREATER 4.4)
             set(ver 4.4)
             set(md5 999248fb40a44543af4dd4cd1be0ceeb)
         else()