diff --git a/.gitignore b/.gitignore
index 5b0fd711bf..017a0b2faa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -53,3 +53,4 @@ config.h
 out
 3rdParty/libev/ARCH.x64
 .v8-build
+.libev-build
diff --git a/Makefile.all-in-one b/Makefile.all-in-one
index a4b4dc1263..8a676f7b0d 100644
--- a/Makefile.all-in-one
+++ b/Makefile.all-in-one
@@ -22,7 +22,9 @@ endif
 
 BUILT_SOURCES += @LIBEV_LIBS@
 
-@LIBEV_LIBS@:
+@LIBEV_LIBS@: .libev-build
+
+.libev-build:
 	@echo
 	@echo "--------------------------------------------------------------------------------"
 	@echo "BUILDING LIBEV"
@@ -33,6 +35,8 @@ BUILT_SOURCES += @LIBEV_LIBS@
 	cd @top_srcdir@/3rdParty/libev/$(LIBEV_BUILD_VERSION) && CFLAGS="$(LIBEV_CFLAGS_32)" orig_CFLAGS="$(LIBEV_CFLAGS_32)" LDFLAGS="$(LIBEV_LDFLAGS_32)" ../configure --disable-shared
 	cd @top_srcdir@/3rdParty/libev/$(LIBEV_BUILD_VERSION) && make
 
+	touch .libev-build
+
 	@echo
 	@echo "--------------------------------------------------------------------------------"
 	@echo "BUILD LIBEV FINISHED"
diff --git a/Makefile.in b/Makefile.in
index fbf55a95c5..848c94b6bb 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -5309,7 +5309,9 @@ js/server/js-%.h: @srcdir@/js/server/%.js .setup-directories
 @ENABLE_BISON_TRUE@JsonParserX/%.cpp: @srcdir@/JsonParserX/%.yy
 @ENABLE_BISON_TRUE@	@top_srcdir@/config/bison-c++.sh $(BISON) $@ $<
 
-@ENABLE_ALL_IN_ONE_TRUE@@LIBEV_LIBS@:
+@ENABLE_ALL_IN_ONE_TRUE@@LIBEV_LIBS@: .libev-build
+
+@ENABLE_ALL_IN_ONE_TRUE@.libev-build:
 @ENABLE_ALL_IN_ONE_TRUE@	@echo
 @ENABLE_ALL_IN_ONE_TRUE@	@echo "--------------------------------------------------------------------------------"
 @ENABLE_ALL_IN_ONE_TRUE@	@echo "BUILDING LIBEV"
@@ -5320,6 +5322,8 @@ js/server/js-%.h: @srcdir@/js/server/%.js .setup-directories
 @ENABLE_ALL_IN_ONE_TRUE@	cd @top_srcdir@/3rdParty/libev/$(LIBEV_BUILD_VERSION) && CFLAGS="$(LIBEV_CFLAGS_32)" orig_CFLAGS="$(LIBEV_CFLAGS_32)" LDFLAGS="$(LIBEV_LDFLAGS_32)" ../configure --disable-shared
 @ENABLE_ALL_IN_ONE_TRUE@	cd @top_srcdir@/3rdParty/libev/$(LIBEV_BUILD_VERSION) && make
 
+@ENABLE_ALL_IN_ONE_TRUE@	touch .libev-build
+
 @ENABLE_ALL_IN_ONE_TRUE@	@echo
 @ENABLE_ALL_IN_ONE_TRUE@	@echo "--------------------------------------------------------------------------------"
 @ENABLE_ALL_IN_ONE_TRUE@	@echo "BUILD LIBEV FINISHED"