diff --git a/configure/os/CONFIG.Common.linux-x86-debug b/configure/os/CONFIG.Common.linux-x86-debug
index 465226154..7c99c7d93 100644
--- a/configure/os/CONFIG.Common.linux-x86-debug
+++ b/configure/os/CONFIG.Common.linux-x86-debug
@@ -10,3 +10,4 @@
 # Include definitions common to all linux-x86  target archs
 include $(CONFIG)/os/CONFIG.Common.linux-x86
 
+HOST_OPT=NO
diff --git a/configure/os/CONFIG.Common.solaris-sparc-debug b/configure/os/CONFIG.Common.solaris-sparc-debug
index cc9cf8f22..b414c1f0d 100644
--- a/configure/os/CONFIG.Common.solaris-sparc-debug
+++ b/configure/os/CONFIG.Common.solaris-sparc-debug
@@ -10,3 +10,5 @@
 # Include definitions common to all solaris-sparc  target archs
 include $(CONFIG)/os/CONFIG.Common.solaris-sparc
 
+# Removes -O optimization and adds -g compile option
+HOST_OPT=NO