Ensure that user-provided CFLAGS and LDFLAGS are honored.

This commit changes the build system so that user-provided flags (in ASTCFLAGS
and ASTLDFLAGS) are supplied to the compiler/linker *after* all flags provided
by the build system itself, so that the user can effectively override the
build system's flags if desired. In addition, ASTCFLAGS and ASTLDFLAGS can now
be provided *either* in the environment before running 'make', or as variable
assignments on the 'make' command line. As a result, the use of COPTS and LDOPTS
is no longer necessary, so they are no longer documented, but are still supported
so as not to break existing build systems that supply them when building Asterisk.



git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.4@207647 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 13 insertions, 19 deletions

diff --git a/Makefile.rules b/Makefile.rules
index e6427172d..019e71b10 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -38,26 +38,20 @@ endif
 OPTIMIZE?=-O6
 
 ifeq ($(findstring DONT_OPTIMIZE,$(MENUSELECT_CFLAGS)),)
-    # More GSM codec optimization
-    # Uncomment to enable MMXTM optimizations for x86 architecture CPU's
-    # which support MMX instructions.  This should be newer pentiums,
-    # ppro's, etc, as well as the AMD K6 and K7.  
-    #K6OPT=-DK6OPT
-
-    ASTCFLAGS+=$(OPTIMIZE)
+    _ASTCFLAGS+=$(OPTIMIZE)
 endif
 
 # shortcuts for common combinations of flags; these must be recursively expanded so that
 # per-target settings will be applied
-CC_CFLAGS=$(PTHREAD_CFLAGS) $(ASTCFLAGS)
-CXX_CFLAGS=$(PTHREAD_CFLAGS) $(filter-out -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations $(AST_DECLARATION_AFTER_STATEMENT),$(ASTCFLAGS))
+CC_CFLAGS=$(PTHREAD_CFLAGS) $(_ASTCFLAGS) $(ASTCFLAGS)
+CXX_CFLAGS=$(PTHREAD_CFLAGS) $(filter-out -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations $(AST_DECLARATION_AFTER_STATEMENT),$(_ASTCFLAGS) $(ASTCFLAGS))
 
 ifeq ($(GNU_LD),1)
 SO_SUPPRESS_SYMBOLS=-Wl,--version-script,$(if $(wildcard $(subst .so,.exports,$@)),$(subst .so,.exports,$@),$(ASTTOPDIR)/default.exports)
 endif
 
-CC_LDFLAGS_SO=$(PTHREAD_CFLAGS) $(ASTLDFLAGS) $(SOLINK) $(SO_SUPPRESS_SYMBOLS)
-CXX_LDFLAGS_SO=$(PTHREAD_CFLAGS) $(ASTLDFLAGS) $(SOLINK) $(SO_SUPPRESS_SYMBOLS)
+CC_LDFLAGS_SO=$(PTHREAD_CFLAGS) $(_ASTLDFLAGS) $(SOLINK) $(SO_SUPPRESS_SYMBOLS) $(ASTLDFLAGS)
+CXX_LDFLAGS_SO=$(PTHREAD_CFLAGS) $(_ASTLDFLAGS) $(SOLINK) $(SO_SUPPRESS_SYMBOLS) $(ASTLDFLAGS)
 CC_LIBS=$(PTHREAD_LIBS) $(LIBS)
 CXX_LIBS=$(PTHREAD_LIBS) $(LIBS)
 
@@ -73,43 +67,43 @@ endif
 %.o: %.s
 	$(ECHO_PREFIX) echo "   [AS] $< -> $@"
 ifeq ($(COMPILE_DOUBLE),yes)
-	$(CMD_PREFIX) $(CC) -o /dev/null -c $< $(CC_CFLAGS) $(OPTIMIZE)
+	$(CMD_PREFIX) $(CC) -o /dev/null -c $< $(OPTIMIZE) $(CC_CFLAGS)
 endif
 	$(CMD_PREFIX) $(CC) -o $@ -c $< $(CC_CFLAGS)
 
 %.o: %.i
 	$(ECHO_PREFIX) echo "   [CCi] $< -> $@"
 ifeq ($(COMPILE_DOUBLE),yes)
-	$(CMD_PREFIX) $(CC) -o /dev/null -c $< $(CC_CFLAGS) $(OPTIMIZE)
+	$(CMD_PREFIX) $(CC) -o /dev/null -c $< $(OPTIMIZE) $(CC_CFLAGS)
 endif
 	$(CMD_PREFIX) $(CC) -o $@ -c $< $(CC_CFLAGS)
 
 ifneq ($(COMPILE_DOUBLE),yes)
 %.o: %.c
 	$(ECHO_PREFIX) echo "   [CC] $< -> $@"
-	$(CMD_PREFIX) $(CC) -o $@ -c $< $(CC_CFLAGS) $(MAKE_DEPS)
+	$(CMD_PREFIX) $(CC) -o $@ -c $< $(MAKE_DEPS) $(CC_CFLAGS)
 endif
 
 %.i: %.c
 	$(ECHO_PREFIX) echo "   [CPP] $< -> $@"
-	$(CMD_PREFIX) $(CC) -o $@ -E $< $(CC_CFLAGS) $(MAKE_DEPS)
+	$(CMD_PREFIX) $(CC) -o $@ -E $< $(MAKE_DEPS) $(CC_CFLAGS)
 
 %.oo: %.ii
 	$(ECHO_PREFIX) echo "   [CXXi] $< -> $@"
 ifeq ($(COMPILE_DOUBLE),yes)
-	$(CMD_PREFIX) $(CXX) -o /dev/null -c $< $(CXX_CFLAGS) $(OPTIMIZE)
+	$(CMD_PREFIX) $(CXX) -o /dev/null -c $< $(OPTIMIZE) $(CXX_CFLAGS)
 endif
 	$(CMD_PREFIX) $(CXX) -o $@ -c $< $(CXX_CFLAGS)
 
 ifneq ($(COMPILE_DOUBLE),yes)
 %.oo: %.cc
 	$(ECHO_PREFIX) echo "   [CXX] $< -> $@"
-	$(CMD_PREFIX) $(CXX) -o $@ -c $< $(CXX_CFLAGS) $(MAKE_DEPS)
+	$(CMD_PREFIX) $(CXX) -o $@ -c $< $(MAKE_DEPS) $(CXX_CFLAGS)
 endif
 
 %.ii: %.cc
 	$(ECHO_PREFIX) echo "   [CPP] $< -> $@"
-	$(CMD_PREFIX) $(CXX) -o $@ -E $< $(CXX_CFLAGS) $(MAKE_DEPS)
+	$(CMD_PREFIX) $(CXX) -o $@ -E $< $(MAKE_DEPS) $(CXX_CFLAGS)
 
 %.c: %.y
 	$(ECHO_PREFIX) echo "   [BISON] $< -> $@"
@@ -129,6 +123,6 @@ endif
 
 %: %.o
 	$(ECHO_PREFIX) echo "   [LD] $^ -> $@"
-	$(CMD_PREFIX) $(CXX) $(STATIC_BUILD) -o $@ $(PTHREAD_CFLAGS) $(ASTLDFLAGS) $^ $(CXX_LIBS)
+	$(CMD_PREFIX) $(CXX) $(STATIC_BUILD) -o $@ $(PTHREAD_CFLAGS) $(_ASTLDFLAGS) $^ $(CXX_LIBS) $(ASTLDFLAGS)
 
 dist-clean:: clean