https://github.com/boostorg/system/issues/132#issuecomment-3657346748

Index: libs/system/build.jam
--- libs/system/build.jam.orig
+++ libs/system/build.jam
@@ -21,4 +21,5 @@ explicit
     ;
 
 call-if : boost-library system
+    : install boost_system
     ;
