Update the generic Unix makefiles.

1) Add OPT_CFLAGS to allow the warning flags to by overriden by
the command line. Thomas Renninger (trenn@suse.de)
2) Eliminate extraneous spaces from the makefile execution output.

generate/unix/Makefile.config

@@ -19,12 +19,16 @@
 
 #
 # Configuration
+#
+# OPT_CFLAGS can be overridden on the make command line by
+#   adding OPT_CFLAGS="..." to the invocation.
+#
 # Notes:
 #   $(BITS) must be set to either 32 or 64
 #   gcc should be version 4 or greater, otherwise some of the options
 #       used will not be recognized.
-#   Global optimization flags (such as -O2, -Os) are not used, since
-#       they cause issues on some compilers.
+#   Global optimization flags (such as -O2, -Os) may cause issues on
+#       some compilers.
 #   The _GNU_SOURCE symbol is required for many hosts.
 #
 .SUFFIXES :
@@ -38,8 +42,8 @@ CC =    gcc
 OBJDIR =     obj$(BITS)
 BINDIR =     bin$(BITS)
 BITSFLAG =   -m$(BITS)
-COMPILEOBJ = $(CC) -c $(CFLAGS) $(CWARNINGFLAGS) -o$@ $<
-LINKPROG =   $(CC) $(OBJECTS) -o $(PROG) $(LDFLAGS)
+COMPILEOBJ = $(CC) -c $(CFLAGS) $(OPT_CFLAGS) -o $@ $<
+LINKPROG =   $(CC) $(LDFLAGS) $(OBJECTS) -o $(PROG)
 INSTALLDIR = /usr/bin
 INSTALLPROG = install -D ../$(BINDIR)/$(PROG) $(DESTDIR)$(INSTALLDIR)/$(PROG)
 
@@ -100,18 +104,25 @@ ACPICA_HEADERS = \
     $(wildcard $(ACPICA_INCLUDE)/platform/*.h)
 
 #
-# Common compiler flags. The warning flags in addition to -Wall are not
-# automatically included in -Wall.
+# Common compiler flags
 #
+OPT_CFLAGS ?= \
+    -D_FORTIFY_SOURCE=2\
+    -O2\
+    $(CWARNINGFLAGS)
+
 CFLAGS += \
     $(BITSFLAG)\
     -D$(HOST)\
     -D_GNU_SOURCE\
-    -D_FORTIFY_SOURCE=2 \
     -I$(ACPICA_INCLUDE)
 
 LDFLAGS += $(BITSFLAG)
 
+#
+# Common compiler warning flags. The warning flags in addition
+# to -Wall are not automatically included in -Wall.
+#
 CWARNINGFLAGS = \
     -ansi\
     -Wall\
@@ -128,7 +139,7 @@ CWARNINGFLAGS = \
     -Wundef
 
 #
-# gcc 4+ flags
+# Additional gcc 4+ warning flags
 #
 CWARNINGFLAGS += \
     -Waddress\
@@ -146,11 +157,11 @@ CWARNINGFLAGS += \
     -Wtype-limits
 
 #
-# Extra warning flags (possible future use)
+# Extra warning flags (for possible future use)
 #
 #CWARNINGFLAGS += \
 #	-Wcast-qual\
-#	-Wconversion
+#	-Wconversion\
 #	-Wshadow\
 
 #

generate/unix/acpiexec/Makefile

@@ -216,6 +216,7 @@ OBJECTS = \
 CFLAGS += \
     -DACPI_EXEC_APP\
     -I$(ACPIEXEC)
+
 LDFLAGS += -lpthread -lrt
 
 #

generate/unix/acpixtract/Makefile

@@ -33,7 +33,7 @@ OBJECTS = \
 # Flags specific to acpixtract
 #
 CFLAGS += \
-    -DACPI_XTRACT_APP \
+    -DACPI_XTRACT_APP
 
 #
 # Common Rules