Skip compiling ilog2.c on Windows where 'inline' uses C++ semantics

Providing definitions for the ilog2 inline functions in a separate .c
file is not necessary and causes link errors if the compiler chooses not
to inline.

Bug: 989745
Change-Id: I0911d02e9601395a235e4a70787087844f8d5ba1

1 files changed, 6 insertions, 0 deletions

diff --git a/BUILD.gn b/BUILD.gn
index dd52d884..8cb1af7d 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -95,6 +95,12 @@ if (current_toolchain == host_toolchain) {
       "config/msvc.h",
     ]
 
+    # On Windows, inline functions do not require out of line definitions.
+    # crbug.com/989745
+    if (is_win) {
+      sources -= [ "nasmlib/ilog2.c" ]
+    }
+
     configs -= configs_to_delete
     configs += configs_to_add
     configs += [ ":nasm_config" ]