diff --git a/MultiSource/Applications/JM/ldecod/Makefile b/MultiSource/Applications/JM/ldecod/Makefile
index c7a9705..2cbdcf2 100644
--- a/MultiSource/Applications/JM/ldecod/Makefile
+++ b/MultiSource/Applications/JM/ldecod/Makefile
@@ -1,6 +1,6 @@
 LEVEL = ../../../..
 PROG     = ldecod
-CPPFLAGS = -D __USE_LARGEFILE64 -D _FILE_OFFSET_BITS=64
+CPPFLAGS = -fcommon -D __USE_LARGEFILE64 -D _FILE_OFFSET_BITS=64
 LDFLAGS  = -lm $(TOOLLINKOPTS)
 
 RUN_OPTIONS = -i $(PROJ_SRC_DIR)/data/test.264 -o Output/test_dec.yuv -r $(PROJ_SRC_DIR)/data/test_rec.yuv
diff --git a/MultiSource/Applications/JM/lencod/Makefile b/MultiSource/Applications/JM/lencod/Makefile
index 6872989..27636c6 100644
--- a/MultiSource/Applications/JM/lencod/Makefile
+++ b/MultiSource/Applications/JM/lencod/Makefile
@@ -1,6 +1,6 @@
 LEVEL = ../../../..
 PROG     = lencod
-CPPFLAGS = -D __USE_LARGEFILE64 -D _FILE_OFFSET_BITS=64
+CPPFLAGS = -fcommon -D __USE_LARGEFILE64 -D _FILE_OFFSET_BITS=64
 LDFLAGS  = -lm $(TOOLLINKOPTS)
 FP_TOLERANCE = 0.025
 
diff --git a/MultiSource/Benchmarks/ASC_Sequoia/IRSmk/Makefile b/MultiSource/Benchmarks/ASC_Sequoia/IRSmk/Makefile
index e7dd448..89251e6 100644
--- a/MultiSource/Benchmarks/ASC_Sequoia/IRSmk/Makefile
+++ b/MultiSource/Benchmarks/ASC_Sequoia/IRSmk/Makefile
@@ -1,7 +1,8 @@
 LEVEL = ../../../..
 
 PROG     = IRSmk
- 
+
+CFLAGS += -fcommon
 LIBS += -lm
 LDFLAGS += -lm
 RUN_OPTIONS = $(PROJ_SRC_DIR)/irsmk_input
diff --git a/MultiSource/Benchmarks/DOE-ProxyApps-C/miniAMR/Makefile b/MultiSource/Benchmarks/DOE-ProxyApps-C/miniAMR/Makefile
index 57dd37a..a1f728a 100644
--- a/MultiSource/Benchmarks/DOE-ProxyApps-C/miniAMR/Makefile
+++ b/MultiSource/Benchmarks/DOE-ProxyApps-C/miniAMR/Makefile
@@ -1,7 +1,7 @@
 LEVEL = ../../../..
 
 PROG	 = miniAMR
-CPPFLAGS = -I.
+CPPFLAGS = -fcommon -I.
 LDFLAGS	 = -lm
 RUN_OPTIONS = --nx 8 --ny 8 --nz 8 --num_tsteps 100
 include $(LEVEL)/MultiSource/Makefile.multisrc
diff --git a/MultiSource/Benchmarks/Olden/bh/Makefile b/MultiSource/Benchmarks/Olden/bh/Makefile
index 64e9ec4..d228b43 100644
--- a/MultiSource/Benchmarks/Olden/bh/Makefile
+++ b/MultiSource/Benchmarks/Olden/bh/Makefile
@@ -1,7 +1,7 @@
 LEVEL = ../../../..
 
 PROG     = bh
-CPPFLAGS = -DTORONTO
+CPPFLAGS = -fcommon -DTORONTO
 LDFLAGS  = -lm
 ifdef LARGE_PROBLEM_SIZE
 RUN_OPTIONS = 40000 30
diff --git a/MultiSource/Benchmarks/Prolangs-C/TimberWolfMC/Makefile b/MultiSource/Benchmarks/Prolangs-C/TimberWolfMC/Makefile
index d31c6a0..f90db43 100644
--- a/MultiSource/Benchmarks/Prolangs-C/TimberWolfMC/Makefile
+++ b/MultiSource/Benchmarks/Prolangs-C/TimberWolfMC/Makefile
@@ -1,5 +1,6 @@
 LEVEL = ../../../..
 
+CPPFLAGS += -fcommon
 PROG = timberwolfmc
 LDFLAGS=-lm
 include $(LEVEL)/MultiSource/Makefile.multisrc
diff --git a/MultiSource/Benchmarks/Prolangs-C/compiler/Makefile b/MultiSource/Benchmarks/Prolangs-C/compiler/Makefile
index f20fe6a..1fa7cf6 100644
--- a/MultiSource/Benchmarks/Prolangs-C/compiler/Makefile
+++ b/MultiSource/Benchmarks/Prolangs-C/compiler/Makefile
@@ -1,5 +1,6 @@
 LEVEL = ../../../..
 
+CPPFLAGS = -fcommon
 PROG = compiler
 #STDIN_FILENAME = $(SourceDir)/testset
 include $(LEVEL)/MultiSource/Makefile.multisrc
diff --git a/MultiSource/Benchmarks/Prolangs-C/loader/Makefile b/MultiSource/Benchmarks/Prolangs-C/loader/Makefile
index 8e57853..a412825 100644
--- a/MultiSource/Benchmarks/Prolangs-C/loader/Makefile
+++ b/MultiSource/Benchmarks/Prolangs-C/loader/Makefile
@@ -1,5 +1,6 @@
 LEVEL = ../../../..
 
+CPPFLAGS = -fcommon
 LDFLAGS = -lm
 PROG = loader
 include $(LEVEL)/MultiSource/Makefile.multisrc
diff --git a/MultiSource/Benchmarks/Prolangs-C/simulator/Makefile b/MultiSource/Benchmarks/Prolangs-C/simulator/Makefile
index ae3eede..8ad14d5 100644
--- a/MultiSource/Benchmarks/Prolangs-C/simulator/Makefile
+++ b/MultiSource/Benchmarks/Prolangs-C/simulator/Makefile
@@ -1,5 +1,6 @@
 LEVEL = ../../../..
 
+CPPFLAGS = -fcommon
 PROG = simulator
 LDFLAGS = -lm
 include $(LEVEL)/MultiSource/Makefile.multisrc