diff --git a/configure/os/CONFIG.Common.solaris-sparc-gnu b/configure/os/CONFIG.Common.solaris-sparc-gnu
index 2be2fc3cc..b89c358c7 100644
--- a/configure/os/CONFIG.Common.solaris-sparc-gnu
+++ b/configure/os/CONFIG.Common.solaris-sparc-gnu
@@ -11,9 +11,10 @@
 include $(CONFIG)/os/CONFIG.Common.solaris-sparc
 # CONFIG.Common.solaris-sparc
 
-CODE_CPPFLAGS = -D__EXTENSIONS__
+COMPILER_CPPFLAGS = 
 
 OP_SYS_LDLIBS_8 = -lc
 OP_SYS_LDLIBS_9 = -lc
 
 OP_SYS_LDFLAGS += -R$(GNU_LIB) -L$(GNU_LIB)
+
diff --git a/configure/os/CONFIG.Common.solaris-x86-gnu b/configure/os/CONFIG.Common.solaris-x86-gnu
index 5330e79af..37244cda9 100644
--- a/configure/os/CONFIG.Common.solaris-x86-gnu
+++ b/configure/os/CONFIG.Common.solaris-x86-gnu
@@ -10,3 +10,10 @@
 # Include definitions common to all solaris-x86  target archs
 include $(CONFIG)/os/CONFIG.Common.solaris-x86
 
+COMPILER_CPPFLAGS =
+
+OP_SYS_LDLIBS_8 = -lc
+OP_SYS_LDLIBS_9 = -lc
+
+OP_SYS_LDFLAGS += -R$(GNU_LIB) -L$(GNU_LIB)
+