build: Generate pkg-config files from Make and not from configure

This moves work from the configure to the Make stage where it can
be parallelized and ensures that pkgconfig files are updated when
library versions change.

Bug-Id: 449

Makefile

@@ -67,7 +67,7 @@ COMPILE_HOSTC = $(call COMPILE,HOSTCC)
 %.h.c:
 	$(Q)echo '#include "$*.h"' >$@
 
-%.c %.h %.ver %.version: TAG = GEN
+%.c %.h %.pc %.ver %.version: TAG = GEN
 
 AVPROGS-$(CONFIG_AVCONV)   += avconv
 AVPROGS-$(CONFIG_AVPLAY)   += avplay
@@ -125,7 +125,6 @@ tools/cws2fws$(EXESUF): ELIBS = $(ZLIB)
 
 CONFIGURABLE_COMPONENTS =                                           \
     $(wildcard $(FFLIBS:%=$(SRC_PATH)/lib%/all*.c))                 \
-    $(wildcard $(FFLIBS:%=$(SRC_PATH)/lib%/version.h))              \
     $(SRC_PATH)/libavcodec/bitstream_filters.c                      \
     $(SRC_PATH)/libavformat/protocols.c                             \
 

avbuild/.gitignore

@@ -2,3 +2,4 @@
 /config.fate
 /config.log
 /config.mak
+/config.sh

avbuild/library.mak

@@ -9,8 +9,8 @@ INCINSTDIR := $(INCDIR)/lib$(NAME)
 
 INSTHEADERS := $(INSTHEADERS) $(HEADERS:%=$(SUBDIR)%)
 
-all-$(CONFIG_STATIC): $(SUBDIR)$(LIBNAME)
-all-$(CONFIG_SHARED): $(SUBDIR)$(SLIBNAME)
+all-$(CONFIG_STATIC): $(SUBDIR)$(LIBNAME)  $(SUBDIR)lib$(NAME).pc
+all-$(CONFIG_SHARED): $(SUBDIR)$(SLIBNAME) $(SUBDIR)lib$(NAME).pc
 
 LIBOBJS := $(OBJS) $(SUBDIR)%.h.o $(TESTOBJS)
 $(LIBOBJS) $(LIBOBJS:.o=.i):   CPPFLAGS += -DHAVE_AV_CONFIG_H
@@ -35,6 +35,9 @@ $(TESTPROGS) $(TOOLS): %$(EXESUF): %.o
 $(SUBDIR)lib$(NAME).version: $(SUBDIR)version.h | $(SUBDIR)
 	$$(M) $$(SRC_PATH)/avbuild/libversion.sh $(NAME) $$< > $$@
 
+$(SUBDIR)lib$(NAME).pc: $(SUBDIR)version.h | $(SUBDIR)
+	$$(M) $$(SRC_PATH)/avbuild/pkgconfig_generate.sh $(NAME) "$(DESC)"
+
 $(SUBDIR)lib$(NAME).ver: $(SUBDIR)lib$(NAME).v $(OBJS)
 	$$(M)sed 's/MAJOR/$(lib$(NAME)_VERSION_MAJOR)/' $$< | $(VERSION_SCRIPT_POSTPROCESS_CMD) > $$@
 

avbuild/pkgconfig_generate.sh

@@ -0,0 +1,50 @@
+#!/bin/sh
+
+. avbuild/config.sh
+
+if test "$shared" = "yes"; then
+    shared=true
+else
+    shared=false
+fi
+
+shortname=$1
+name=lib${shortname}
+comment=$2
+libs=$(eval echo \$extralibs_${shortname})
+requires=$(eval echo \$requires_${shortname})
+requires=${requires%, }
+
+version=$(grep ${name}_VERSION= $name/${name}.version | cut -d= -f2)
+
+cat <<EOF > $name/$name.pc
+prefix=$prefix
+exec_prefix=\${prefix}
+libdir=$libdir
+includedir=$incdir
+
+Name: $name
+Description: $comment
+Version: $version
+Requires: $($shared || echo $requires)
+Requires.private: $($shared && echo $requires)
+Conflicts:
+Libs: -L\${libdir} -l${shortname} $($shared || echo $libs)
+Libs.private: $($shared && echo $libs)
+Cflags: -I\${includedir}
+EOF
+
+cat <<EOF > $name/$name-uninstalled.pc
+prefix=
+exec_prefix=
+libdir=\${pcfiledir}
+includedir=${source_path}
+
+Name: $name
+Description: $comment
+Version: $version
+Requires: $requires
+Conflicts:
+Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
+Cflags: -I\${includedir}
+EOF

configure

@@ -5402,52 +5402,29 @@ lib_version(){
     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
 }
 
-pkgconfig_generate(){
-    name=$1
-    shortname=${name#lib}
-    comment=$2
-    version=$3
-    libs=$4
-    requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
-    requires=${requires%, }
-    enabled ${name#lib} || return 0
-    mkdir -p $name
-    cat <<EOF > $name/$name.pc
+cat > avbuild/config.sh <<EOF
+# Automatically generated by configure - do not modify!
+shared=$shared
 prefix=$prefix
-exec_prefix=\${prefix}
 libdir=$libdir
 includedir=$incdir
-
-Name: $name
-Description: $comment
-Version: $version
-Requires: $(enabled shared || echo $requires)
-Requires.private: $(enabled shared && echo $requires)
-Conflicts:
-Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
-Libs.private: $(enabled shared && echo $libs)
-Cflags: -I\${includedir}
+source_path=${source_path}
+LIBPREF=${LIBPREF}
+LIBSUF=${LIBSUF}
+
+requires_avutil="$(map 'lib_version $v' $(echo $avutil_deps))"
+requires_avcodec="$(map 'lib_version $v' $(echo $avcodec_deps))"
+requires_avformat="$(map 'lib_version $v' $(echo $avformat_deps))"
+requires_avdevice="$(map 'lib_version $v' $(echo $avdevice_deps))"
+requires_avfilter="$(map 'lib_version $v' $(echo $avfilter_deps))"
+requires_avresample="$(map 'lib_version $v' $(echo $avresample_deps))"
+requires_swscale="$(map 'lib_version $v' $(echo $swscale_deps))"
+
+extralibs_avutil="$LIBRT $LIBM"
+extralibs_avcodec="$extralibs"
+extralibs_avformat="$extralibs"
+extralibs_avdevice="$extralibs"
+extralibs_avfilter="$extralibs"
+extralibs_avresample="$LIBM"
+extralibs_swscale="$LIBM"
 EOF
-    cat <<EOF > $name/$name-uninstalled.pc
-prefix=
-exec_prefix=
-libdir=\${pcfiledir}
-includedir=${source_path}
-
-Name: $name
-Description: $comment
-Version: $version
-Requires: $requires
-Conflicts:
-Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
-Cflags: -I\${includedir}
-EOF
-}
-
-pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
-pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
-pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
-pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
-pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
-pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
-pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"

libavcodec/Makefile

@@ -1,4 +1,5 @@
 NAME = avcodec
+DESC = Libav codec library
 
 HEADERS = avcodec.h                                                     \
           avfft.h                                                       \

libavdevice/Makefile

@@ -1,4 +1,5 @@
 NAME    = avdevice
+DESC    = Libav device handling library
 
 HEADERS = avdevice.h                                                    \
           version.h                                                     \

libavfilter/Makefile

@@ -1,4 +1,5 @@
 NAME = avfilter
+DESC = Libav video filtering library
 
 HEADERS = avfilter.h                                                    \
           avfiltergraph.h                                               \

libavformat/Makefile

@@ -1,4 +1,5 @@
 NAME = avformat
+DESC = Libav container format library
 
 HEADERS = avformat.h                                                    \
           avio.h                                                        \

libavresample/Makefile

@@ -1,4 +1,5 @@
 NAME = avresample
+DESC = Libav audio resampling library
 
 HEADERS = avresample.h                                                  \
           version.h                                                     \

libavutil/Makefile

@@ -1,4 +1,5 @@
 NAME = avutil
+DESC = Libav utility library
 
 HEADERS = adler32.h                                                     \
           aes.h                                                         \

libswscale/Makefile

@@ -1,4 +1,5 @@
 NAME = swscale
+DESC = Libav image rescaling library
 
 HEADERS = swscale.h                                                     \
           version.h                                                     \