Add disable_optimization JLLWrappers preference

src/JLLWrappers.jl

@@ -1,11 +1,19 @@
 module JLLWrappers
 
-if isdefined(Base, :Experimental) && isdefined(Base.Experimental, Symbol("@compiler_options"))
-    @eval Base.Experimental.@compiler_options compile=min optimize=0 infer=false
+@static if VERSION >= v"1.6.0-DEV"
+    using Preferences
 end
 
-if VERSION >= v"1.6.0-DEV"
-    using Preferences
+@static if VERSION >= v"1.6.0-DEV"
+    const disable_optimization = @load_preference("disable_optimization", true)
+else
+    const disable_optimization = true
+end
+
+@static if isdefined(Base, :Experimental) && isdefined(Base.Experimental, Symbol("@compiler_options"))
+    if disable_optimization
+        @eval Base.Experimental.@compiler_options compile=min optimize=0 infer=false
+    end
 end
 
 const global_typeassert_available = VERSION >= v"1.9.0-"

src/toplevel_generators.jl

@@ -46,9 +46,12 @@ end
     generate_compiler_options(src_name)
 
 Because JLL packages do not contain code that benefits much from compiler optimizations,
-we disable them for a sizable boost in first load time.
+we disable them for a sizable boost in first load time. This can be opted out of by
+setting the `disable_optimization` JLLWrappers preference to `false`.
 """
 function generate_compiler_options(src_name)
+    JLLWrappers.disable_optimization || return nothing
+
     # Newer Julias have `@compiler_options` that can enable interpreted mode
     if isdefined(Base, :Experimental) && isdefined(Base.Experimental, Symbol("@compiler_options"))
         return quote

test/runtests.jl

@@ -43,6 +43,7 @@ end; end
 
 module TestJLL end
 @testset "JLLWrappers.jl" begin
+    @test JLLWrappers.disable_optimization === true
     mktempdir() do dir
         Pkg.activate(dir)