diff --git a/mk/flags.mk b/mk/flags.mk
index 74efd59d..571c2074 100644
--- a/mk/flags.mk
+++ b/mk/flags.mk
@@ -45,8 +45,9 @@ endif
 # Add boost library search path.
 # This is the defualt installation location by home brew.
 ifeq "$(is_darwin)" "1"
-    LDFLAGS += -L/usr/local/lib
-    INCLUDES += /usr/local/opt/flex/include
+    LDFLAGS += -L $(BOOST_ROOT)/lib
+    LDFLAGS += -L$(FLEX_ROOT)/lib
+    INCLUDES += $(FLEX_ROOT)/include
 endif
 
 # Need to pass the -U option to GNU ar to turn off deterministic mode, or
diff --git a/mk/paths.mk b/mk/paths.mk
index 61b1db22..e3084674 100644
--- a/mk/paths.mk
+++ b/mk/paths.mk
@@ -26,8 +26,12 @@ TEST_ROOT :=  $(ERPC_ROOT)/test
 
 ifeq "$(is_mingw)" "1"
     BOOST_ROOT ?= $(ERPC_ROOT)/erpcgen/VisualStudio_v14/boost_1_67_0
-else
+else ifneq "$(is_darwin)" "1"
     BOOST_ROOT ?= /usr/local/opt/boost
+else
+    ifndef BOOST_ROOT
+        BOOST_ROOT := $(shell brew --prefix boost)
+    endif
 endif
 
 TARGET_OUTPUT_ROOT = $(OUTPUT_ROOT)/$(DEBUG_OR_RELEASE)/$(os_name)/$(APP_NAME)
@@ -70,8 +74,15 @@ endif
 
 # Tool paths. Use different paths for OS X.
 ifeq "$(is_darwin)" "1"
-    FLEX ?= /usr/local/opt/flex/bin/flex
-    BISON ?= /usr/local/opt/bison/bin/bison
+    ifndef FLEX_ROOT
+        FLEX_ROOT := $(shell brew --prefix flex)
+    endif
+    ifndef BISON_ROOT
+        BISON_ROOT := $(shell brew --prefix bison)
+    endif
+
+    FLEX ?= $(FLEX_ROOT)/bin/flex
+    BISON ?= $(BISON_ROOT)/bin/bison
 else ifeq "$(is_linux)" "1"
     FLEX ?= /usr/bin/flex
     BISON ?= /usr/bin/bison