--- src/config/makefile.h.orig
+++ src/config/makefile.h
@@ -1003,8 +1003,8 @@ ifeq ($(TARGET),MACX)
         GNUMAJOR=$(shell $(_FC) -dM -E - < /dev/null 2> /dev/null | grep __GNUC__ |cut -c18-)
         ifdef GNUMAJOR
         GNUMINOR=$(shell $(_FC) -dM -E - < /dev/null 2> /dev/null | egrep __GNUC_MINOR | cut -c24)
-        GNU_GE_4_6 = $(shell [ $(GNUMAJOR) -gt 4 -o \( $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 6 \) ] && echo true)
-        GNU_GE_4_8 = $(shell [ $(GNUMAJOR) -gt 4 -o \( $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 8 \) ] && echo true)
+        GNU_GE_4_6 = $(shell [ $(GNUMAJOR) -gt 4 ] || [ $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 6 ] && echo true)
+        GNU_GE_4_8 = $(shell [ $(GNUMAJOR) -gt 4 ] || [ $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 8 ] && echo true)
         GNU_GE_6 = $(shell [ $(GNUMAJOR) -ge 6  ] && echo true)
         endif
         ifeq ($(GNU_GE_4_6),true)
@@ -1354,8 +1354,8 @@ ifeq ($(TARGET),$(findstring $(TARGET),LINUX CYGNUS CYGWIN))
         GNUMAJOR=$(shell $(_FC) -dM -E - < /dev/null 2> /dev/null | grep __GNUC__ |cut -c18-)
         ifdef GNUMAJOR
           GNUMINOR=$(shell $(FC) -dM -E - < /dev/null 2> /dev/null | egrep __VERS | cut -c24)
-          GNU_GE_4_6 = $(shell [ $(GNUMAJOR) -gt 4 -o \( $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 6 \) ] && echo true)
-          GNU_GE_4_8 = $(shell [ $(GNUMAJOR) -gt 4 -o \( $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 8 \) ] && echo true)
+          GNU_GE_4_6 = $(shell [ $(GNUMAJOR) -gt 4 ] || [ $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 6 ] && echo true)
+          GNU_GE_4_8 = $(shell [ $(GNUMAJOR) -gt 4 ] || [ $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 8 ] && echo true)
         GNU_GE_6 = $(shell [ $(GNUMAJOR) -ge 6  ] && echo true)
         GNU_GE_8 = $(shell [ $(GNUMAJOR) -ge 8  ] && echo true)
         ifeq ($(GNU_GE_4_6),true)
@@ -1783,8 +1783,8 @@ endif
         GNUMAJOR=$(shell $(_FC) -dM -E - < /dev/null 2> /dev/null | grep __GNUC__ |cut -c18-)
         ifdef GNUMAJOR
         GNUMINOR=$(shell $(_FC) -dM -E - < /dev/null 2> /dev/null | egrep __GNUC_MINOR | cut -c24)
-        GNU_GE_4_6 = $(shell [ $(GNUMAJOR) -gt 4 -o \( $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 6 \) ] && echo true)
-        GNU_GE_4_8 = $(shell [ $(GNUMAJOR) -gt 4 -o \( $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 8 \) ] && echo true)
+        GNU_GE_4_6 = $(shell [ $(GNUMAJOR) -gt 4 ] || [ $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 6 ] && echo true)
+        GNU_GE_4_8 = $(shell [ $(GNUMAJOR) -gt 4 ] || [ $(GNUMAJOR) -eq 4 -a $(GNUMINOR) -ge 8 ] && echo true)
         endif
         GNU_GE_6 = $(shell [ $(GNUMAJOR) -ge 6  ] && echo true)
         GNU_GE_8 = $(shell [ $(GNUMAJOR) -ge 8  ] && echo true)