diff --git a/win32/build/config.w32 b/win32/build/config.w32
index 4d2451b5afa..68159eecabb 100644
--- a/win32/build/config.w32
+++ b/win32/build/config.w32
@@ -255,13 +255,13 @@ if (PHP_DEBUG == "yes" && PHP_ZTS == "yes") {
 // CFLAGS, LDFLAGS and BUILD_DIR are defined
 // Add compiler and link flags if PGO options are selected
 if (PHP_DEBUG != "yes" && PHP_PGI == "yes") {
-	ADD_FLAG('CFLAGS', "/GL /O2");
-	ADD_FLAG('LDFLAGS', "/LTCG:PGINSTRUMENT");
+	ADD_FLAG('DLL_LDFLAGS', "/LTCG:PGINSTRUMENT");
+	ADD_FLAG("STATIC_EXT_CFLAGS", "/GL /O2");
 	DEFINE("PGOPGD_DIR", "$(BUILD_DIR)");
 }
 else if (PHP_DEBUG != "yes" && PHP_PGO != "no") {
-	ADD_FLAG('CFLAGS', "/GL /O2");
-	ADD_FLAG('LDFLAGS', "/LTCG:PGUPDATE");
+	ADD_FLAG('DLL_LDFLAGS', "/LTCG:PGUPDATE");
+	ADD_FLAG("STATIC_EXT_CFLAGS", "/GL /O2");
 	DEFINE("PGOPGD_DIR", ((PHP_PGO.length == 0 || PHP_PGO == "yes") ? "$(BUILD_DIR)" : PHP_PGO));
 }
 
diff --git a/win32/build/confutils.js b/win32/build/confutils.js
index b6c793b42dc..e8b784f3527 100644
--- a/win32/build/confutils.js
+++ b/win32/build/confutils.js
@@ -1084,6 +1084,16 @@ function SAPI(sapiname, file_list, makefiletarget, cflags, obj_dir)
 	}
 	
 	if(is_pgo_desired(sapiname) && (PHP_PGI == "yes" || PHP_PGO != "no")) {
+		// Add compiler and link flags if PGO options are selected
+		if (PHP_DEBUG != "yes" && PHP_PGI == "yes") {
+			ADD_FLAG('CFLAGS_' + SAPI, "/GL /O2");
+			ADD_FLAG('LDFLAGS_' + SAPI, "/LTCG:PGINSTRUMENT");
+		}
+		else if (PHP_DEBUG != "yes" && PHP_PGO != "no") {
+			ADD_FLAG('CFLAGS_' + SAPI, "/GL /O2");
+			ADD_FLAG('LDFLAGS_' + SAPI, "/LTCG:PGUPDATE");
+		}
+
 		ldflags += " /PGD:$(PGOPGD_DIR)\\" + makefiletarget.substring(0, makefiletarget.indexOf(".")) + ".pgd";
 	}
 
@@ -1270,6 +1280,16 @@ function EXTENSION(extname, file_list, shared, cflags, dllname, obj_dir)
 
 		ldflags = "";
 		if (is_pgo_desired(extname) && (PHP_PGI == "yes" || PHP_PGO != "no")) {
+			// Add compiler and link flags if PGO options are selected
+			if (PHP_DEBUG != "yes" && PHP_PGI == "yes") {
+				ADD_FLAG('LDFLAGS_' + EXT, "/LTCG:PGINSTRUMENT");
+			}
+			else if (PHP_DEBUG != "yes" && PHP_PGO != "no") {
+				ADD_FLAG('LDFLAGS_' + EXT, "/LTCG:PGUPDATE");
+			}
+
+			ADD_FLAG('CFLAGS_' + EXT, "/GL /O2");
+
 			ldflags = " /PGD:$(PGOPGD_DIR)\\" + dllname.substring(0, dllname.indexOf(".")) + ".pgd";
 		}