diff --git a/meson.build b/meson.build
index ae90691222d..3c678a3cb92 100644
--- a/meson.build
+++ b/meson.build
@@ -44,6 +44,10 @@ with_mesa_debug = get_option('buildtype') == 'debug'
 # This means the final value of b_ndebug==true
 with_mesa_ndebug = get_option('b_ndebug') == 'true' or (get_option('buildtype') == 'release' and get_option('b_ndebug') == 'if-release')
 
+# We need to set -fmacro-prefix-map properly for driver CL reproducability.
+relative_dir = fs.relative_to(meson.global_source_root(), meson.global_build_root())
+cl_args = ['-fmacro-prefix-map=@0@/='.format(relative_dir)]
+
 # Arguments for the preprocessor, put these in a separate array from the C and
 # C++ (cpp in meson terminology) arguments since they need to be added to the
 # default arguments for both C and C++.
diff --git a/src/asahi/libagx/meson.build b/src/asahi/libagx/meson.build
index 070ad053d5b..f4a504ff3bf 100644
--- a/src/asahi/libagx/meson.build
+++ b/src/asahi/libagx/meson.build
@@ -13,9 +13,6 @@ libagx_shader_files = files(
   'helper.cl',
 )
 
-# We need to set -fmacro-prefix-map properly for reproducability.
-relative_dir = fs.relative_to(meson.global_source_root(), meson.global_build_root()) + '/'
-
 libagx_spv = custom_target(
   input : libagx_shader_files,
   output : 'libagx.spv',
@@ -26,7 +23,7 @@ libagx_spv = custom_target(
     '-I' + join_paths(meson.current_source_dir(), '../../'),
     '-I' + join_paths(meson.current_source_dir(), 'shaders'),
     '-I' + join_paths(meson.current_build_dir(), '../genxml'),
-    '-fmacro-prefix-map=@0@='.format(relative_dir),
+    cl_args,
     ],
   depends : [agx_pack],
   depfile : 'libagx_shaders.h.d',
diff --git a/src/nouveau/vulkan/meson.build b/src/nouveau/vulkan/meson.build
index e20384cd8fc..a04501a1b61 100644
--- a/src/nouveau/vulkan/meson.build
+++ b/src/nouveau/vulkan/meson.build
@@ -100,7 +100,7 @@ nvkcl_spv = custom_target(
     prog_mesa_clc, '-o', '@OUTPUT@', '--depfile', '@DEPFILE@', nvkcl_files, '--',
     '-I' + join_paths(meson.current_source_dir(), '.'),
     '-I' + join_paths(meson.project_source_root(), 'src'),
-    '-fmacro-prefix-map=@0@/='.format(relative_dir),
+    cl_args,
     ],
   depfile : '@PLAINNAME@.d',
 )
diff --git a/src/panfrost/libpan/meson.build b/src/panfrost/libpan/meson.build
index af33c03a368..c58c2307da6 100644
--- a/src/panfrost/libpan/meson.build
+++ b/src/panfrost/libpan/meson.build
@@ -6,10 +6,6 @@ libpan_shader_files = files(
   'query_pool.cl',
 )
 
-# We need to set -fmacro-prefix-map properly for reproducability.
-fs = import('fs')
-relative_dir = fs.relative_to(meson.global_source_root(), meson.global_build_root()) + '/'
-
 idep_libpan_per_arch = {}
 
 foreach ver : ['4', '5', '6', '7', '9', '10']
@@ -25,7 +21,7 @@ foreach ver : ['4', '5', '6', '7', '9', '10']
         '-I' + join_paths(meson.current_source_dir(), '../../'),
         '-I' + join_paths(meson.current_source_dir(), '../lib/'),
         '-I' + join_paths(meson.current_build_dir(), '../lib/'),
-        '-fmacro-prefix-map=@0@='.format(relative_dir),
+        cl_args,
         ],
     env: ['MESA_SHADER_CACHE_DISABLE=true'],
     depends : [pan_packers],