build: add option to enable LTO

[dpdk.git] / config / meson.build

diff --git a/config/meson.build b/config/meson.build
index e1ebdad..2b1cb92 100644 (file)
--- a/config/meson.build
+++ b/config/meson.build
@@ -225,3 +225,16 @@ add_project_arguments('-D_GNU_SOURCE', language: 'c')
 if is_freebsd
        add_project_arguments('-D__BSD_VISIBLE', language: 'c')
 endif
+
+if get_option('b_lto')
+       if cc.has_argument('-ffat-lto-objects')
+               add_project_arguments('-ffat-lto-objects', language: 'c')
+       else
+               error('compiler does not support fat LTO objects - please turn LTO off')
+       endif
+       # workaround for gcc bug 81440
+       if cc.get_id() == 'gcc' and cc.version().version_compare('<8.0')
+               add_project_arguments('-Wno-lto-type-mismatch', language: 'c')
+               add_project_link_arguments('-Wno-lto-type-mismatch', language: 'c')
+       endif
+endif