add preprocessor flag FOLLY_ATTR_WEAK_SYMBOLS_COMPILE_TIME for folly::flock

Yang Er · facebook-github-bot · commit fcd01101fce5 · 2025-02-20T12:43:11.000-08:00
Summary: add preprocessor flag FOLLY_ATTR_WEAK_SYMBOLS_COMPILE_TIME for folly::flock

Reviewed By: Orvid

Differential Revision: D69881666

fbshipit-source-id: 5ac2f3b99b346eca7cb7531ddf8a994e7ae88b24
diff --git a/folly/portability/BUCK b/folly/portability/BUCK
@@ -314,6 +314,7 @@ cpp_library(
     compiler_flags = roar_no_jit(),
     deps = [
         ":windows",
+        "//folly:c_portability",
     ],
 )
 
diff --git a/folly/portability/SysFile.cpp b/folly/portability/SysFile.cpp
@@ -19,9 +19,11 @@
 #ifdef _WIN32
 #include <limits>
 
+#include <folly/CPortability.h>
 #include <folly/portability/Windows.h>
 
-extern "C" int flock(int fd, int operation) {
+extern "C" int FOLLY_ATTR_WEAK_SYMBOLS_COMPILE_TIME
+flock(int fd, int operation) {
   HANDLE h = (HANDLE)_get_osfhandle(fd);
   if (h == INVALID_HANDLE_VALUE) {
     return -1;

Original file line number	Diff line number	Diff line change
`@@ -314,6 +314,7 @@ cpp_library(`
`314`	`314`	`compiler_flags = roar_no_jit(),`
`315`	`315`	`deps = [`
`316`	`316`	`":windows",`
	`317`	`+ "//folly:c_portability",`
`317`	`318`	`],`
`318`	`319`	`)`
`319`	`320`