diff --git a/llvm_config_llvm19.go b/llvm_config_llvm19.go
index 29e2246..e540f57 100644
--- a/llvm_config_llvm19.go
+++ b/llvm_config_llvm19.go
@@ -8,6 +8,9 @@ package llvm
 // #cgo darwin,arm64 CPPFLAGS: -I/opt/homebrew/opt/llvm@19/include   -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
 // #cgo darwin,arm64 CXXFLAGS: -std=c++17
 // #cgo darwin,arm64 LDFLAGS: -L/opt/homebrew/opt/llvm@19/lib -Wl,-search_paths_first -Wl,-headerpad_max_install_names -lLLVM -lz -lm
+// #cgo freebsd      CPPFLAGS: -I/usr/local/llvm19/include -I/usr/local/llvm19/include/llvm-c -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
+// #cgo freebsd      CXXFLAGS: -std=c++17
+// #cgo freebsd      LDFLAGS: -L/usr/local/llvm19/lib -lLLVM
 // #cgo linux        CPPFLAGS: -I/usr/include/llvm-19 -I/usr/include/llvm-c-19 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
 // #cgo linux        CXXFLAGS: -std=c++17
 // #cgo linux        LDFLAGS: -L/usr/lib/llvm-19/lib -lLLVM-19
diff --git a/llvm_config_llvm20.go b/llvm_config_llvm20.go
index e0ca6a6..090bdd6 100644
--- a/llvm_config_llvm20.go
+++ b/llvm_config_llvm20.go
@@ -8,6 +8,9 @@ package llvm
 // #cgo darwin,arm64 CPPFLAGS: -I/opt/homebrew/opt/llvm@20/include   -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
 // #cgo darwin,arm64 CXXFLAGS: -std=c++17
 // #cgo darwin,arm64 LDFLAGS: -L/opt/homebrew/opt/llvm@20/lib -Wl,-search_paths_first -Wl,-headerpad_max_install_names -lLLVM -lz -lm
+// #cgo freebsd      CPPFLAGS: -I/usr/local/llvm20/include -I/usr/local/llvm20/include/llvm-c -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
+// #cgo freebsd      CXXFLAGS: -std=c++17
+// #cgo freebsd      LDFLAGS: -L/usr/local/llvm20/lib -lLLVM
 // #cgo linux        CPPFLAGS: -I/usr/include/llvm-20 -I/usr/include/llvm-c-20 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
 // #cgo linux        CXXFLAGS: -std=c++17
 // #cgo linux        LDFLAGS: -L/usr/lib/llvm-20/lib -lLLVM-20
diff --git a/llvm_config_llvm21.go b/llvm_config_llvm21.go
index 904cc58..e74a1f8 100644
--- a/llvm_config_llvm21.go
+++ b/llvm_config_llvm21.go
@@ -8,6 +8,9 @@ package llvm
 // #cgo darwin,arm64 CPPFLAGS: -I/opt/homebrew/opt/llvm@21/include   -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
 // #cgo darwin,arm64 CXXFLAGS: -std=c++17
 // #cgo darwin,arm64 LDFLAGS: -L/opt/homebrew/opt/llvm@21/lib -Wl,-search_paths_first -Wl,-headerpad_max_install_names -lLLVM -lz -lm
+// #cgo freebsd      CPPFLAGS: -I/usr/local/llvm21/include -I/usr/local/llvm21/include/llvm-c -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
+// #cgo freebsd      CXXFLAGS: -std=c++17
+// #cgo freebsd      LDFLAGS: -L/usr/local/llvm21/lib -lLLVM
 // #cgo linux        CPPFLAGS: -I/usr/include/llvm-21 -I/usr/include/llvm-c-21 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
 // #cgo linux        CXXFLAGS: -std=c++17
 // #cgo linux        LDFLAGS: -L/usr/lib/llvm-21/lib -lLLVM-21