diff --git a/dist/tools/bossa-1.8/Makefile b/dist/tools/bossa-1.8/Makefile
index 6b9b1592a7..a2b4c42dfb 100644
--- a/dist/tools/bossa-1.8/Makefile
+++ b/dist/tools/bossa-1.8/Makefile
@@ -3,15 +3,4 @@ PKG_URL      = https://github.com/shumatech/BOSSA
 PKG_VERSION  = 26154375695f345491bba158d57177aa231d6765
 PKG_LICENSE  = BSD-3-Clause
 
-PKG_SOURCE_DIR = $(CURDIR)/bin
-PKG_BUILD_OUT_OF_SOURCE = 0
-
-include $(RIOTBASE)/pkg/pkg.mk
-
-all:
-	@echo "[INFO] compiling bossac from source now"
-	@env -u CXX COMMON_CXXFLAGS="-std=c++11" $(MAKE) BINDIR=$(PKG_BUILD_DIR) -C $(PKG_BUILD_DIR) strip-bossac
-	@mv $(PKG_BUILD_DIR)/bossac $(CURDIR)/bossac
-
-distclean::
-	@rm -f $(CURDIR)/bossac
+include $(RIOTMAKE)/tools/bossa-build.inc.mk
diff --git a/dist/tools/bossa-1.9/Makefile b/dist/tools/bossa-1.9/Makefile
index febb787503..a63be38675 100644
--- a/dist/tools/bossa-1.9/Makefile
+++ b/dist/tools/bossa-1.9/Makefile
@@ -3,15 +3,4 @@ PKG_URL      = https://github.com/shumatech/BOSSA
 PKG_VERSION  = 1.9.1
 PKG_LICENSE  = BSD-3-Clause
 
-PKG_SOURCE_DIR = $(CURDIR)/bin
-PKG_BUILD_OUT_OF_SOURCE = 0
-
-include $(RIOTBASE)/pkg/pkg.mk
-
-all:
-	@echo "[INFO] compiling bossac from source now"
-	@env -u CXX COMMON_CXXFLAGS="-std=c++11" $(MAKE) BINDIR=$(PKG_BUILD_DIR) -C $(PKG_BUILD_DIR) strip-bossac
-	@mv $(PKG_BUILD_DIR)/bossac $(CURDIR)/bossac
-
-distclean::
-	@rm -f $(CURDIR)/bossac
+include $(RIOTMAKE)/tools/bossa-build.inc.mk
diff --git a/dist/tools/bossa-nrf52/Makefile b/dist/tools/bossa-nrf52/Makefile
index 45c16dadbd..02ef5469e9 100644
--- a/dist/tools/bossa-nrf52/Makefile
+++ b/dist/tools/bossa-nrf52/Makefile
@@ -3,15 +3,4 @@ PKG_URL      = https://github.com/arduino/BOSSA
 PKG_VERSION  = 52e0a4a28721296e64083de7780b30580e0fad16
 PKG_LICENSE  = BSD-3-Clause
 
-PKG_SOURCE_DIR = $(CURDIR)/bin
-PKG_BUILD_OUT_OF_SOURCE = 0
-
-include $(RIOTBASE)/pkg/pkg.mk
-
-all:
-	@echo "[INFO] compiling bossac from source now"
-	@env -u CXX COMMON_CXXFLAGS="-std=c++11" $(MAKE) BINDIR=$(PKG_BUILD_DIR) -C $(PKG_BUILD_DIR) strip-bossac
-	@mv $(PKG_BUILD_DIR)/bossac $(CURDIR)/bossac
-
-distclean::
-	@rm -f $(CURDIR)/bossac
+include $(RIOTMAKE)/tools/bossa-build.inc.mk
diff --git a/makefiles/tools/bossa-build.inc.mk b/makefiles/tools/bossa-build.inc.mk
new file mode 100644
index 0000000000..5b32f5500e
--- /dev/null
+++ b/makefiles/tools/bossa-build.inc.mk
@@ -0,0 +1,14 @@
+PKG_SOURCE_DIR = $(CURDIR)/bin
+PKG_BUILD_OUT_OF_SOURCE = 0
+
+include $(RIOTBASE)/pkg/pkg.mk
+
+all: $(CURDIR)/bossac
+
+$(CURDIR)/bossac:
+	@echo "[INFO] compiling bossac from source now"
+	@env -u CXX COMMON_CXXFLAGS="-std=c++11" $(MAKE) BINDIR=$(PKG_BUILD_DIR) -C $(PKG_BUILD_DIR) strip-bossac
+	@mv $(PKG_BUILD_DIR)/bossac $(CURDIR)/bossac
+
+clean::
+	rm -f $(CURDIR)/bossac