diff --git a/trick_sims/SIM_satellite/models/Satellite/graphics/makefile b/trick_sims/SIM_satellite/models/Satellite/graphics/makefile
index d740f15d..231700b4 100644
--- a/trick_sims/SIM_satellite/models/Satellite/graphics/makefile
+++ b/trick_sims/SIM_satellite/models/Satellite/graphics/makefile
@@ -1,5 +1,5 @@
-CPP     ?= g++
-CC      ?= gcc
+CPP      = g++
+CC       = gcc
 
 ifeq ($(shell uname), Darwin)
        GL_LIBS  = -framework GLUT -framework OpenGL
diff --git a/trick_sims/SIM_wheelbot/models/Battery/test/makefile b/trick_sims/SIM_wheelbot/models/Battery/test/makefile
index 02327e19..14af12b1 100644
--- a/trick_sims/SIM_wheelbot/models/Battery/test/makefile
+++ b/trick_sims/SIM_wheelbot/models/Battery/test/makefile
@@ -1,8 +1,8 @@
 
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 DECL_DIR = ..
 GTEST_DIR = ${HOME}/gtest-1.7.0
diff --git a/trick_sims/SIM_wheelbot/models/Control/test/makefile b/trick_sims/SIM_wheelbot/models/Control/test/makefile
index 9a5c2bba..c863277a 100644
--- a/trick_sims/SIM_wheelbot/models/Control/test/makefile
+++ b/trick_sims/SIM_wheelbot/models/Control/test/makefile
@@ -1,6 +1,6 @@
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 PROJECT_DIR = ../..
 
diff --git a/trick_sims/SIM_wheelbot/models/Electrical/test/makefile b/trick_sims/SIM_wheelbot/models/Electrical/test/makefile
index 2f4a2c0f..2f9483ce 100644
--- a/trick_sims/SIM_wheelbot/models/Electrical/test/makefile
+++ b/trick_sims/SIM_wheelbot/models/Electrical/test/makefile
@@ -1,6 +1,6 @@
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 DECL_DIR = ..
 GTEST_DIR = ${HOME}/gtest-1.7.0
diff --git a/trick_sims/SIM_wheelbot/models/Guidance/test/makefile b/trick_sims/SIM_wheelbot/models/Guidance/test/makefile
index ef9af3b3..8372803b 100644
--- a/trick_sims/SIM_wheelbot/models/Guidance/test/makefile
+++ b/trick_sims/SIM_wheelbot/models/Guidance/test/makefile
@@ -1,8 +1,8 @@
 
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 DECL_DIR = ..
 GTEST_DIR = ${HOME}/gtest-1.7.0
diff --git a/trick_sims/SIM_wheelbot/models/Motor/test/makefile b/trick_sims/SIM_wheelbot/models/Motor/test/makefile
index 75df7558..54e63538 100644
--- a/trick_sims/SIM_wheelbot/models/Motor/test/makefile
+++ b/trick_sims/SIM_wheelbot/models/Motor/test/makefile
@@ -1,7 +1,7 @@
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 DECL_DIR = ..
 GTEST_DIR = ${HOME}/gtest-1.7.0
diff --git a/trick_sims/SIM_wheelbot/models/Motor/test/test/makefile b/trick_sims/SIM_wheelbot/models/Motor/test/test/makefile
index 9a5c2bba..c863277a 100644
--- a/trick_sims/SIM_wheelbot/models/Motor/test/test/makefile
+++ b/trick_sims/SIM_wheelbot/models/Motor/test/test/makefile
@@ -1,6 +1,6 @@
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 PROJECT_DIR = ../..
 
diff --git a/trick_source/data_products/Apps/ExternalPrograms/makefile b/trick_source/data_products/Apps/ExternalPrograms/makefile
index a86e07f0..a56fabd4 100644
--- a/trick_source/data_products/Apps/ExternalPrograms/makefile
+++ b/trick_source/data_products/Apps/ExternalPrograms/makefile
@@ -1,4 +1,4 @@
-CC           ?= gcc
+CC            = gcc 
 
 ifndef TRICK_HOST_CPU
 TRICK_HOST_CPU := $(shell trick-gte TRICK_HOST_CPU)
@@ -34,7 +34,7 @@ TRICK_CFLAGS += -Wall
 endif
 
 ifeq ($(TRICK_HOST_TYPE),Darwin)
-CC ?= cc
+CC = cc
 LD_SHARED = $(CC) -bundle
 TRICK_CFLAGS += -Wall
 endif
diff --git a/trick_source/data_products/DPX/APPS/FXPLOT/makefile b/trick_source/data_products/DPX/APPS/FXPLOT/makefile
index bac734a4..480cc1ec 100644
--- a/trick_source/data_products/DPX/APPS/FXPLOT/makefile
+++ b/trick_source/data_products/DPX/APPS/FXPLOT/makefile
@@ -2,8 +2,8 @@
 include ${TRICK_HOME}/share/trick/makefiles/Makefile.common
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = gcc
+CPP = c++
 
 DPX_DIR = ../..
 
diff --git a/trick_source/data_products/DPX/APPS/GXPLOT/makefile b/trick_source/data_products/DPX/APPS/GXPLOT/makefile
index 4c299855..e36352be 100644
--- a/trick_source/data_products/DPX/APPS/GXPLOT/makefile
+++ b/trick_source/data_products/DPX/APPS/GXPLOT/makefile
@@ -2,8 +2,8 @@
 include ${TRICK_HOME}/share/trick/makefiles/Makefile.common
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = gcc
+CPP = c++
 
 DPX_DIR = ../..
 
diff --git a/trick_source/data_products/DPX/DPC/makefile b/trick_source/data_products/DPX/DPC/makefile
index 68313712..14e3984a 100644
--- a/trick_source/data_products/DPX/DPC/makefile
+++ b/trick_source/data_products/DPX/DPC/makefile
@@ -2,8 +2,8 @@
 include ${TRICK_HOME}/share/trick/makefiles/Makefile.common
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = gcc
+CPP = c++
 
 DPX_DIR  = ..
 
diff --git a/trick_source/data_products/DPX/DPM/makefile b/trick_source/data_products/DPX/DPM/makefile
index 928d9a7d..a6fb2c76 100644
--- a/trick_source/data_products/DPX/DPM/makefile
+++ b/trick_source/data_products/DPX/DPM/makefile
@@ -2,8 +2,8 @@
 include ${TRICK_HOME}/share/trick/makefiles/Makefile.common
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = gcc
+CPP = c++
 
 DPX_DIR = ..
 
diff --git a/trick_source/data_products/DPX/DPV/UTILS/makefile b/trick_source/data_products/DPX/DPV/UTILS/makefile
index a66a1395..58ff0734 100644
--- a/trick_source/data_products/DPX/DPV/UTILS/makefile
+++ b/trick_source/data_products/DPX/DPV/UTILS/makefile
@@ -2,8 +2,8 @@
 include ${TRICK_HOME}/share/trick/makefiles/Makefile.common
 
 RM = rm -rf
-CC ?= gcc
-CPP ?= g++
+CC = gcc
+CPP = g++
 
 DPX_DIR  = ../..
 
diff --git a/trick_source/data_products/EQParse/makefile b/trick_source/data_products/EQParse/makefile
index b3811928..3887d161 100644
--- a/trick_source/data_products/EQParse/makefile
+++ b/trick_source/data_products/EQParse/makefile
@@ -1,7 +1,7 @@
 
 include ${TRICK_HOME}/share/trick/makefiles/Makefile.common
 
-CC       ?= cc
+CC        = gcc
 
 OBJ_DIR    = object_${TRICK_HOST_CPU}
 LIBDIR    = ../lib_${TRICK_HOST_CPU}
diff --git a/trick_source/data_products/Log/makefile b/trick_source/data_products/Log/makefile
index 80ef052f..14fbfb53 100644
--- a/trick_source/data_products/Log/makefile
+++ b/trick_source/data_products/Log/makefile
@@ -1,7 +1,7 @@
 
 include ${TRICK_HOME}/share/trick/makefiles/Makefile.common
 
-CC       ?= c++
+CC        = c++ 
 
 ifndef TRICK_HOST_CPU
 TRICK_HOST_CPU := $(shell uname -s)
diff --git a/trick_source/data_products/Var/makefile b/trick_source/data_products/Var/makefile
index c64f0206..44eb5a0e 100644
--- a/trick_source/data_products/Var/makefile
+++ b/trick_source/data_products/Var/makefile
@@ -1,7 +1,7 @@
 
 include ${TRICK_HOME}/share/trick/makefiles/Makefile.common
 
-CC       ?= c++
+CC        = c++ 
 
 ifndef TRICK_HOST_CPU
 TRICK_HOST_CPU := $(shell uname -s)
diff --git a/trick_source/data_products/units/makefile b/trick_source/data_products/units/makefile
index cc58921d..42d7ac90 100644
--- a/trick_source/data_products/units/makefile
+++ b/trick_source/data_products/units/makefile
@@ -1,8 +1,8 @@
 
 include ${TRICK_HOME}/share/trick/makefiles/Makefile.common
 
-CC  ?= cc
-CPP ?= c++
+CC  = gcc
+CPP = c++
 
 ifndef TRICK_HOST_CPU
 TRICK_HOST_CPU := $(shell uname -s)
diff --git a/trick_source/sim_services/DataTypes/makefile b/trick_source/sim_services/DataTypes/makefile
index c240c9cf..c18d9b8e 100644
--- a/trick_source/sim_services/DataTypes/makefile
+++ b/trick_source/sim_services/DataTypes/makefile
@@ -1,7 +1,7 @@
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = gcc
+CPP = c++
 
 
 CFLAGS = -g -Wall
diff --git a/trick_source/trick_utils/SAIntegrator/examples/AsteroidFlyBy/makefile b/trick_source/trick_utils/SAIntegrator/examples/AsteroidFlyBy/makefile
index e436645d..0e628f44 100644
--- a/trick_source/trick_utils/SAIntegrator/examples/AsteroidFlyBy/makefile
+++ b/trick_source/trick_utils/SAIntegrator/examples/AsteroidFlyBy/makefile
@@ -1,7 +1,7 @@
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 CXXFLAGS = -g -Wall
 INCLUDE_DIRS = -I../../include
diff --git a/trick_source/trick_utils/SAIntegrator/examples/BouncyCannonBall/makefile b/trick_source/trick_utils/SAIntegrator/examples/BouncyCannonBall/makefile
index d0f29f28..8c14f0b0 100644
--- a/trick_source/trick_utils/SAIntegrator/examples/BouncyCannonBall/makefile
+++ b/trick_source/trick_utils/SAIntegrator/examples/BouncyCannonBall/makefile
@@ -1,7 +1,7 @@
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 CXXFLAGS = -g -Wall
 INCLUDE_DIRS = -I../../include
diff --git a/trick_source/trick_utils/SAIntegrator/examples/CannonBall/makefile b/trick_source/trick_utils/SAIntegrator/examples/CannonBall/makefile
index 05daf637..3bf6eb8d 100644
--- a/trick_source/trick_utils/SAIntegrator/examples/CannonBall/makefile
+++ b/trick_source/trick_utils/SAIntegrator/examples/CannonBall/makefile
@@ -1,7 +1,7 @@
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 CXXFLAGS = -g -Wall
 INCLUDE_DIRS = -I../../include
diff --git a/trick_source/trick_utils/SAIntegrator/examples/DefiniteIntegral/makefile b/trick_source/trick_utils/SAIntegrator/examples/DefiniteIntegral/makefile
index 6e19d246..c136ed78 100644
--- a/trick_source/trick_utils/SAIntegrator/examples/DefiniteIntegral/makefile
+++ b/trick_source/trick_utils/SAIntegrator/examples/DefiniteIntegral/makefile
@@ -1,7 +1,7 @@
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 CXXFLAGS = -g -Wall
 INCLUDE_DIRS = -I../../include
diff --git a/trick_source/trick_utils/SAIntegrator/examples/DoubleIntegral/makefile b/trick_source/trick_utils/SAIntegrator/examples/DoubleIntegral/makefile
index f111ac6e..835703aa 100644
--- a/trick_source/trick_utils/SAIntegrator/examples/DoubleIntegral/makefile
+++ b/trick_source/trick_utils/SAIntegrator/examples/DoubleIntegral/makefile
@@ -1,7 +1,7 @@
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 CXXFLAGS = -g -Wall
 INCLUDE_DIRS = -I../../include
diff --git a/trick_source/trick_utils/SAIntegrator/examples/MassSpringDamper/makefile b/trick_source/trick_utils/SAIntegrator/examples/MassSpringDamper/makefile
index b41d4f8a..bda3abb5 100644
--- a/trick_source/trick_utils/SAIntegrator/examples/MassSpringDamper/makefile
+++ b/trick_source/trick_utils/SAIntegrator/examples/MassSpringDamper/makefile
@@ -1,7 +1,7 @@
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 CXXFLAGS = -g -Wall
 INCLUDE_DIRS = -I../../include
diff --git a/trick_source/trick_utils/SAIntegrator/examples/Orbit/makefile b/trick_source/trick_utils/SAIntegrator/examples/Orbit/makefile
index e16bc20a..5d155c26 100644
--- a/trick_source/trick_utils/SAIntegrator/examples/Orbit/makefile
+++ b/trick_source/trick_utils/SAIntegrator/examples/Orbit/makefile
@@ -1,7 +1,7 @@
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = cc
+CPP = c++
 
 CXXFLAGS = -g -Wall
 INCLUDE_DIRS = -I../../include
diff --git a/trick_source/trick_utils/SAIntegrator/makefile b/trick_source/trick_utils/SAIntegrator/makefile
index 2a7ed210..98506b78 100644
--- a/trick_source/trick_utils/SAIntegrator/makefile
+++ b/trick_source/trick_utils/SAIntegrator/makefile
@@ -1,7 +1,7 @@
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = gcc
+CPP = c++
 
 CFLAGS = -g -Wall -std=c++11 ${TRICK_CXXFLAGS}
 INCLUDE_DIRS = -Iinclude
diff --git a/trick_source/trick_utils/comm/test_programs/makefile b/trick_source/trick_utils/comm/test_programs/makefile
index 1328f389..92cd9b99 100644
--- a/trick_source/trick_utils/comm/test_programs/makefile
+++ b/trick_source/trick_utils/comm/test_programs/makefile
@@ -20,7 +20,7 @@ TRICK_HOST_TYPE := $(shell trick-gte TRICK_HOST_TYPE)
 endif
 
 
-CC ?= cc
+CC = cc
 FLAGS =
 ifeq ($(TRICK_HOST_TYPE), Darwin)
  LIBS =
diff --git a/trick_source/trick_utils/units/Unittest/makefile b/trick_source/trick_utils/units/Unittest/makefile
index 45dda6f0..a29f43ea 100644
--- a/trick_source/trick_utils/units/Unittest/makefile
+++ b/trick_source/trick_utils/units/Unittest/makefile
@@ -9,8 +9,8 @@ TRICK_HOST_TYPE := $(shell trick-gte TRICK_HOST_TYPE)
 endif
 
 
-CC  ?= gcc
-CPP ?= g++
+CC  = gcc
+CPP = g++
 
 CFLAGS = -g -Wall -I../include 
 
diff --git a/trick_source/web/CivetServer/makefile b/trick_source/web/CivetServer/makefile
index 3ecd1271..11db671d 100644
--- a/trick_source/web/CivetServer/makefile
+++ b/trick_source/web/CivetServer/makefile
@@ -1,8 +1,8 @@
 include ${TRICK_HOME}/share/trick/makefiles/Makefile.common
 
 RM = rm -rf
-CC ?= cc
-CPP ?= c++
+CC = gcc
+CPP = c++
 CURL = curl
 MV = mv
 CP = cp