diff --git a/lib/efm32/efm32g/Makefile b/lib/efm32/efm32g/Makefile
index e798365b..7a644b26 100644
--- a/lib/efm32/efm32g/Makefile
+++ b/lib/efm32/efm32g/Makefile
@@ -19,6 +19,7 @@
 ##
 
 LIBNAME		= libopencm3_efm32g
+SRCLIBDIR	?= ../..
 FAMILY		= EFM32G
 
 PREFIX		?= arm-none-eabi
diff --git a/lib/efm32/efm32gg/Makefile b/lib/efm32/efm32gg/Makefile
index b9941532..fdfe6e77 100644
--- a/lib/efm32/efm32gg/Makefile
+++ b/lib/efm32/efm32gg/Makefile
@@ -19,6 +19,7 @@
 ##
 
 LIBNAME		= libopencm3_efm32gg
+SRCLIBDIR	?= ../..
 FAMILY		= EFM32GG
 
 PREFIX		?= arm-none-eabi
diff --git a/lib/efm32/efm32lg/Makefile b/lib/efm32/efm32lg/Makefile
index 2c34943a..07a8e453 100644
--- a/lib/efm32/efm32lg/Makefile
+++ b/lib/efm32/efm32lg/Makefile
@@ -19,6 +19,7 @@
 ##
 
 LIBNAME		= libopencm3_efm32lg
+SRCLIBDIR	?= ../..
 FAMILY		= EFM32LG
 
 PREFIX		?= arm-none-eabi
diff --git a/lib/efm32/efm32tg/Makefile b/lib/efm32/efm32tg/Makefile
index 3dd6693e..46de1933 100644
--- a/lib/efm32/efm32tg/Makefile
+++ b/lib/efm32/efm32tg/Makefile
@@ -19,6 +19,7 @@
 ##
 
 LIBNAME		= libopencm3_efm32tg
+SRCLIBDIR	?= ../..
 FAMILY		= EFM32TG
 
 PREFIX		?= arm-none-eabi
diff --git a/lib/lm3s/Makefile b/lib/lm3s/Makefile
index a32c40c0..353183d1 100644
--- a/lib/lm3s/Makefile
+++ b/lib/lm3s/Makefile
@@ -18,6 +18,7 @@
 ##
 
 LIBNAME		= libopencm3_lm3s
+SRCLIBDIR	?= ..
 
 PREFIX		?= arm-none-eabi
 
diff --git a/lib/lm4f/Makefile b/lib/lm4f/Makefile
index 46a70fec..6b83b0f0 100644
--- a/lib/lm4f/Makefile
+++ b/lib/lm4f/Makefile
@@ -19,6 +19,7 @@
 ##
 
 LIBNAME		= libopencm3_lm4f
+SRCLIBDIR	?= ..
 
 FP_FLAGS	?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
 PREFIX		?= arm-none-eabi
diff --git a/lib/lpc13xx/Makefile b/lib/lpc13xx/Makefile
index f58efbfb..f396d5b9 100644
--- a/lib/lpc13xx/Makefile
+++ b/lib/lpc13xx/Makefile
@@ -18,6 +18,7 @@
 ##
 
 LIBNAME		= libopencm3_lpc13xx
+SRCLIBDIR	?= ..
 
 PREFIX		?= arm-none-eabi
 
diff --git a/lib/lpc17xx/Makefile b/lib/lpc17xx/Makefile
index 7e0ef324..4b49df40 100644
--- a/lib/lpc17xx/Makefile
+++ b/lib/lpc17xx/Makefile
@@ -18,6 +18,7 @@
 ##
 
 LIBNAME		= libopencm3_lpc17xx
+SRCLIBDIR	?= ..
 
 PREFIX		?= arm-none-eabi
 
diff --git a/lib/lpc43xx/m0/Makefile b/lib/lpc43xx/m0/Makefile
index 4dc6359b..65114c2e 100644
--- a/lib/lpc43xx/m0/Makefile
+++ b/lib/lpc43xx/m0/Makefile
@@ -20,6 +20,7 @@
 ##
 
 LIBNAME		= libopencm3_lpc43xx_m0
+SRCLIBDIR	?= ../..
 
 PREFIX		?= arm-none-eabi
 #PREFIX		?= arm-elf
diff --git a/lib/lpc43xx/m4/Makefile b/lib/lpc43xx/m4/Makefile
index d7abe956..a3d3b03d 100644
--- a/lib/lpc43xx/m4/Makefile
+++ b/lib/lpc43xx/m4/Makefile
@@ -21,6 +21,7 @@
 ##
 
 LIBNAME		= libopencm3_lpc43xx
+SRCLIBDIR	?= ../..
 
 FP_FLAGS	?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
 PREFIX		?= arm-none-eabi
diff --git a/lib/sam/3n/Makefile b/lib/sam/3n/Makefile
index b7d8437d..e6d4ccf9 100644
--- a/lib/sam/3n/Makefile
+++ b/lib/sam/3n/Makefile
@@ -18,6 +18,7 @@
 ##
 
 LIBNAME		= libopencm3_sam3n
+SRCLIBDIR	?= ../..
 
 PREFIX		?= arm-none-eabi
 
diff --git a/lib/sam/3s/Makefile b/lib/sam/3s/Makefile
index 39eb2cda..45a8a7a9 100644
--- a/lib/sam/3s/Makefile
+++ b/lib/sam/3s/Makefile
@@ -19,6 +19,7 @@
 ##
 
 LIBNAME		= libopencm3_sam3s
+SRCLIBDIR	?= ../..
 
 PREFIX		?= arm-none-eabi
 
diff --git a/lib/sam/3u/Makefile b/lib/sam/3u/Makefile
index 478640ea..e0939f3d 100644
--- a/lib/sam/3u/Makefile
+++ b/lib/sam/3u/Makefile
@@ -19,6 +19,7 @@
 ##
 
 LIBNAME		= libopencm3_sam3u
+SRCLIBDIR	?= ../..
 
 PREFIX		?= arm-none-eabi
 
diff --git a/lib/sam/3x/Makefile b/lib/sam/3x/Makefile
index 910a4813..de2fa285 100644
--- a/lib/sam/3x/Makefile
+++ b/lib/sam/3x/Makefile
@@ -18,6 +18,7 @@
 ##
 
 LIBNAME		= libopencm3_sam3x
+SRCLIBDIR	?= ../..
 
 PREFIX		?= arm-none-eabi
 
diff --git a/lib/stm32/f0/Makefile b/lib/stm32/f0/Makefile
index 5bf7afad..8c030a9f 100644
--- a/lib/stm32/f0/Makefile
+++ b/lib/stm32/f0/Makefile
@@ -18,6 +18,7 @@
 ##
 
 LIBNAME		= libopencm3_stm32f0
+SRCLIBDIR	?= ../..
 
 PREFIX		?= arm-none-eabi
 #PREFIX		?= arm-elf
diff --git a/lib/stm32/f1/Makefile b/lib/stm32/f1/Makefile
index 1092f80d..ea0b49dd 100644
--- a/lib/stm32/f1/Makefile
+++ b/lib/stm32/f1/Makefile
@@ -18,6 +18,7 @@
 ##
 
 LIBNAME		= libopencm3_stm32f1
+SRCLIBDIR	?= ../..
 
 PREFIX		?= arm-none-eabi
 
diff --git a/lib/stm32/f2/Makefile b/lib/stm32/f2/Makefile
index c40ecc37..90fe2edf 100644
--- a/lib/stm32/f2/Makefile
+++ b/lib/stm32/f2/Makefile
@@ -18,6 +18,7 @@
 ##
 
 LIBNAME		= libopencm3_stm32f2
+SRCLIBDIR	?= ../..
 
 PREFIX		?= arm-none-eabi
 
diff --git a/lib/stm32/f3/Makefile b/lib/stm32/f3/Makefile
index 3ec6ab61..1d5d8e66 100644
--- a/lib/stm32/f3/Makefile
+++ b/lib/stm32/f3/Makefile
@@ -18,6 +18,7 @@
 ##
 
 LIBNAME		= libopencm3_stm32f3
+SRCLIBDIR	?= ../..
 
 FP_FLAGS	?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
 PREFIX	        ?= arm-none-eabi
diff --git a/lib/stm32/f4/Makefile b/lib/stm32/f4/Makefile
index c649af53..9964e29b 100644
--- a/lib/stm32/f4/Makefile
+++ b/lib/stm32/f4/Makefile
@@ -19,6 +19,7 @@
 ##
 
 LIBNAME		= libopencm3_stm32f4
+SRCLIBDIR	?= ../..
 
 FP_FLAGS	?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
 PREFIX	        ?= arm-none-eabi
diff --git a/lib/stm32/l1/Makefile b/lib/stm32/l1/Makefile
index 85c54746..d5ecde45 100644
--- a/lib/stm32/l1/Makefile
+++ b/lib/stm32/l1/Makefile
@@ -18,6 +18,7 @@
 ##
 
 LIBNAME		= libopencm3_stm32l1
+SRCLIBDIR	?= ../..
 
 PREFIX		?= arm-none-eabi