Merge remote-tracking branch 'qatar/master'

* qatar/master:
  build: allow non-standard variations of linker -l/-L flags
  Add reminders to update the codec descriptor list with new codec IDs.

Conflicts:
	Makefile
	configure
	libavcodec/avcodec.h
	libavformat/Makefile

Merged-by: Michael Niedermayer <michaelni@gmx.at>

common.mak

@@ -33,7 +33,7 @@ CXXFLAGS   += $(CPPFLAGS) $(CFLAGS)
 YASMFLAGS  += $(IFLAGS:%=%/) -I$(SRC_PATH)/libavutil/x86/ -Pconfig.asm
 
 HOSTCCFLAGS = $(IFLAGS) $(HOSTCFLAGS)
-LDFLAGS    := $(ALLFFLIBS:%=-Llib%) $(LDFLAGS)
+LDFLAGS    := $(ALLFFLIBS:%=$(LD_PATH)lib%) $(LDFLAGS)
 
 define COMPILE
        $(call $(1)DEP,$(1))
@@ -82,7 +82,8 @@ OBJS      += $(OBJS-yes)
 FFLIBS    := $(FFLIBS-yes) $(FFLIBS)
 TESTPROGS += $(TESTPROGS-yes)
 
-FFEXTRALIBS := $(FFLIBS:%=-l%$(BUILDSUF)) $(EXTRALIBS)
+LDLIBS       = $(FFLIBS:%=%$(BUILDSUF))
+FFEXTRALIBS := $(LDLIBS:%=$(LD_LIB)) $(EXTRALIBS)
 
 EXAMPLES  := $(EXAMPLES:%=$(SUBDIR)%-example$(EXESUF))
 OBJS      := $(sort $(OBJS:%=$(SUBDIR)%))

configure

@@ -2050,6 +2050,8 @@ CXX_C='-c'
 CXX_O='-o $@'
 LD_O='-o $@'
 FORCE_INC="-include"
+LD_LIB='-l%'
+LD_PATH='-L'
 HOSTCC_C='-c'
 HOSTCC_O='-o $@'
 HOSTLD_O='-o $@'
@@ -2411,7 +2413,8 @@ probe_cc(){
     pfx=$1
     _cc=$2
 
-    unset _type _ident _cc_c _cc_e _cc_o _ld_o _flags _cflags _ldflags
+    unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
+    unset _ld_o _ldflags _ld_lib _ld_path
     unset _depflags _DEPCMD _DEPFLAGS
     _flags_filter=echo
 
@@ -2573,6 +2576,8 @@ ldflags_filter=$_flags_filter
 add_ldflags $_flags $_ldflags
 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
 LD_O=${_ld_o-$LD_O}
+LD_LIB=${_ld_lib-$LD_LIB}
+LD_PATH=${_ld_path-$LD_PATH}
 
 probe_cc hostld "$host_ld"
 host_ldflags_filter=$_flags_filter
@@ -4018,6 +4023,8 @@ CC_O=$CC_O
 CXX_C=$CXX_C
 CXX_O=$CXX_O
 LD_O=$LD_O
+LD_LIB=$LD_LIB
+LD_PATH=$LD_PATH
 DLLTOOL=$dlltool
 LDFLAGS=$LDFLAGS
 LDFLAGS-ffserver=$FFSERVERLDFLAGS

doc/developer.texi

@@ -394,6 +394,8 @@ send a reminder by email. Your patch should eventually be dealt with.
     Did you register it in @file{allcodecs.c} or @file{allformats.c}?
 @item
     Did you add the AVCodecID to @file{avcodec.h}?
+    When adding new codec IDs, also add an entry to the codec descriptor
+    list in @file{libavcodec/codec_desc.c}.
 @item
     If it has a fourCC, did you add it to @file{libavformat/riff.c},
     even if it is only a decoder?

libavcodec/avcodec.h

@@ -90,6 +90,9 @@
  * 1. no value of a existing codec ID changes (that would break ABI),
  * 2. Give it a value which when taken as ASCII is recognized uniquely by a human as this specific codec.
  *    This ensures that 2 forks can independently add AVCodecIDs without producing conflicts.
+ *
+ * After adding new codec IDs, do not forget to add an entry to the codec
+ * descriptor list and bump libavcodec minor version.
  */
 enum AVCodecID {
     AV_CODEC_ID_NONE,

library.mak

@@ -35,7 +35,7 @@ install-libs-$(CONFIG_SHARED): install-lib$(NAME)-shared
 
 define RULES
 $(EXAMPLES) $(TESTPROGS) $(TOOLS): %$(EXESUF): %.o
-	$$(LD) $(LDFLAGS) $$(LD_O) $$^ -l$(FULLNAME) $(FFEXTRALIBS) $$(ELIBS)
+	$$(LD) $(LDFLAGS) $$(LD_O) $$^ $(FULLNAME:%=$(LD_LIB)) $(FFEXTRALIBS) $$(ELIBS)
 
 $(SUBDIR)$(SLIBNAME): $(SUBDIR)$(SLIBNAME_WITH_MAJOR)
 	$(Q)cd ./$(SUBDIR) && $(LN_S) $(SLIBNAME_WITH_MAJOR) $(SLIBNAME)