build: Define Make variables for cppflags.

As a first step towards separating autoconf output variables and Make
recipes, this commit defines Make variables for all cppflags at the
top of Makefile.in and avoids @variable@ constructs in Make rules.

As an additional benefit, this improves readability of the generated
Makefile.

diff --git a/Makefile.in b/Makefile.in
index 8f14e5aafdd9a54196b299f383d2659a7b13996c..3e62d05fa04692c075a1027145927d0987484716 100644 (file)
--- a/Makefile.in
+++ b/Makefile.in
@@ -19,6 +19,15 @@ MKDIR_P := mkdir -p
 
 speex_cppflags := @speex_cppflags@
 opus_cppflags := @opus_cppflags@
+arch_cppflags := @arch_cppflags@
+osl_cppflags := @osl_cppflags@
+id3tag_cppflags := @id3tag_cppflags@
+openssl_cppflags := @openssl_cppflags@
+ogg_cppflags := @ogg_cppflags@
+mad_cppflags := @mad_cppflags@
+faad_cppflags := @faad_cppflags@
+curses_cppflags := @curses_cppflags@
+ao_cppflags := @ao_cppflags@
 
 id3tag_ldflags := @id3tag_ldflags@
 ogg_ldflags := @ogg_ldflags@
@@ -90,10 +99,10 @@ CPPFLAGS += -Wmissing-noreturn
 CPPFLAGS += -Wbad-function-cast
 CPPFLAGS += -fno-strict-aliasing
 CPPFLAGS += -DMAIN_INPUT_FILE_IS_$(*F)
-CPPFLAGS += @arch_cppflags@
+CPPFLAGS += $(arch_cppflags)
 CPPFLAGS += -I/usr/local/include
 CPPFLAGS += -I$(cmdline_dir)
-CPPFLAGS += @osl_cppflags@
+CPPFLAGS += $(osl_cppflags)
 
 LDFLAGS += @clock_gettime_ldflags@
 
@@ -175,34 +184,34 @@ error2.h: $(hostbin_dir)/error2
        @echo "$(object_executable_matrix)" | $< > $@
 $(object_dir)/crypt.o: crypt.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @openssl_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(openssl_cppflags) $<
 $(object_dir)/spx_common.o: spx_common.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(speex_cppflags) @ogg_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(speex_cppflags) $(ogg_cppflags) $<
 
 $(object_dir)/spxdec_filter.o: spxdec_filter.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(speex_cppflags) @ogg_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(speex_cppflags) $(ogg_cppflags) $<
 
 $(object_dir)/spx_afh.o: spx_afh.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(speex_cppflags) @ogg_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(speex_cppflags) $(ogg_cppflags) $<
 
 $(object_dir)/oggdec_filter.o: oggdec_filter.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @ogg_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(ogg_cppflags) $<
 
 $(object_dir)/ogg_afh.o: ogg_afh.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @ogg_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(ogg_cppflags) $<
 
 $(object_dir)/ogg_afh_common.o: ogg_afh_common.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @ogg_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(ogg_cppflags) $<
 
 $(object_dir)/mp3dec_filter.o: mp3dec_filter.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @mad_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(mad_cppflags) $<
 
 $(object_dir)/compress_filter.o: compress_filter.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
@@ -210,26 +219,27 @@ $(object_dir)/compress_filter.o: compress_filter.c | $(object_dir)
 
 $(object_dir)/aacdec_filter.o: aacdec_filter.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @faad_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(faad_cppflags) $<
 
 $(object_dir)/aac_common.o: aac_common.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @faad_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(faad_cppflags) $<
 
 $(object_dir)/aac_afh.o: aac_afh.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @faad_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(faad_cppflags) $<
 
 $(object_dir)/opus%.o: CPPFLAGS += $(opus_cppflags)
-$(object_dir)/mp3_afh.o: CPPFLAGS += @id3tag_cppflags@
+$(object_dir)/mp3_afh.o: CPPFLAGS += $(id3tag_cppflags)
+
 $(object_dir)/mp3_afh.o: mp3_afh.c | $(object_dir)
 
 $(object_dir)/gui%.o: gui%.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @curses_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(curses_cppflags) $<
 $(object_dir)/ao_write.o: ao_write.c | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'
-       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) @ao_cppflags@ $<
+       $(Q) $(CC) -c -o $@ $(CPPFLAGS) $(DEBUG_CPPFLAGS) $(ao_cppflags) $<
 
 $(object_dir)/%.cmdline.o: $(cmdline_dir)/%.cmdline.c $(cmdline_dir)/%.cmdline.h | $(object_dir)
        @[ -z "$(Q)" ] || echo 'CC $<'