crossdev: add support for linking & building extra packages

Add a set of extra package flags so people can throw in arbitrary sets
of packages after the toolchain is complete.  This requires the package
to be aware of the CTARGET usage, so it can be dangerous when combined
with any package in the tree.

URL: http://crbug.com/372937
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 46 insertions, 0 deletions

diff --git a/crossdev b/crossdev
index 0691641..677b5ae 100755
--- a/crossdev
+++ b/crossdev
@@ -71,6 +71,7 @@ Overlay Options:
     ${GOOD}-og, --ov-gcc${NORMAL} path       Overlay for gcc ebuilds [default: search]
     ${GOOD}-ok, --ov-kernel${NORMAL} path    Overlay for kernel ebuilds [default: search]
     ${GOOD}-ol, --ov-libc${NORMAL} path      Overlay for C library ebuilds [default: search]
+    ${GOOD}-ox, --ov-extra${NORMAL} path     Overlay for extra packages [default: search]
 
 Stage Options:
     ${GOOD}-s0, --stage0${NORMAL}            Build just binutils
@@ -89,6 +90,7 @@ Extra Fun (must be run after above stages):
     ${GOOD}--ex-only${NORMAL}                Skip the stage steps above
     ${GOOD}--ex-gcc${NORMAL}                 Build extra gcc targets (gcj/ada/etc...)
     ${GOOD}--ex-gdb${NORMAL}                 Build a cross gdb
+    ${GOOD}--ex-pkg${NORMAL} pkg             Build extra packages (may be used multiple times)
 
 ${BRACKET}Target (-t)${NORMAL} takes a tuple ${BRACKET}ARCH-VENDOR-OS-LIBC${NORMAL}; see 'crossdev -t help'
 EOF
@@ -505,6 +507,28 @@ with_headers()   { [[ ${WITH_HEADERS}   == "yes" ]] ; }
 ex_fast()    { [[ ${EX_FAST}    == "yes" ]] ; }
 ex_gcc()     { [[ ${EX_GCC}     == "yes" ]] ; }
 ex_gdb()     { [[ ${EX_GDB}     == "yes" ]] ; }
+ex_pkgs()    { [[ ${#XPKGS[@]} -gt 0     ]] ; }
+
+# For each extra package, call $@ with the X* vars set up properly.
+for_each_extra_pkg() {
+	local pkg i
+
+	for (( i = 0; i < ${#XPKGS[@]}; ++i )) ; do
+		# Since the user gave us full atoms, pull them apart here.
+		pkg=${XPKGS[i]}
+		if [[ ${pkg} != */* ]]; then
+			usage 1 "arguments to --ex-pkg must be CATEGORY/PN"
+		fi
+
+		XCAT=${pkg%/*} \
+		XPKG=${pkg#*/} \
+		XVER=${XVERS[i]} \
+		XUSE=${XUSES[i]} \
+		XENV=${XENVS[i]} \
+		XOVL=${XOVLS[i]} \
+		"$@"
+	done
+}
 
 hr() {
 	local c=${COLUMNS:-0}
@@ -554,6 +578,7 @@ GCAT="sys-devel"  ; GPKG="gcc"           ; GVER="" GUSE="" GENV="" GOVL=""
 KCAT="sys-kernel" ; KPKG="linux-headers" ; KVER="" KUSE="" KENV="" KOVL=""
 LCAT="sys-libs"   ; LPKG="[none]"        ; LVER="" LUSE="" LENV="" LOVL=""
 DCAT="sys-devel"  ; DPKG="gdb"           ; DVER="" DUSE="" DENV="" DOVL=""
+XPKGS=() XVERS=() XUSES=() XENVS=() XOVLS=()
 DEFAULT_VER="[latest]"
 SEARCH_OVERLAYS=""
 CROSSDEV_OVERLAY=""
@@ -593,6 +618,7 @@ while [[ $# -gt 0 ]] ; do
 	--l|--libc)        shift; LVER=$1;;
 	--lenv)            shift; LENV=$1;;
 	-ol|--ov-libc)     shift; LOVL=$1;;
+	-ox|--ov-extra)    shift; XOVLS+=( "$1" );;
 	--env)             shift; AENV=$1;;
 	-A|--abis)         shift; MULTILIB_ABIS=$1;;
 	--host-abi)        shift; HOST_ABI=$1;;
@@ -604,6 +630,7 @@ while [[ $# -gt 0 ]] ; do
 	--ex-only)         EX_FAST="yes";;
 	--ex-gcc)          EX_GCC="yes";;
 	--ex-gdb)          EX_GDB="yes";;
+	--ex-pkg)          shift; XPKGS+=( "$1" );;
 	--with-*)          eval $(set_withval $1);;
 	--without-*)       eval $(set_withval $1);;
 	-f|--force)        FORCE="yes";;
@@ -648,6 +675,16 @@ show_target_cfg() {
 	)
 	ex_gdb && pkgs+=( gdb D )
 
+	if ex_pkgs ; then
+		show_extra_pkg() {
+			echo "ex_${XPKG}_category=${XCAT}"
+			echo "ex_${XPKG}_pn=${XPKG}"
+			crosspkgs+=( "ex_${XPKG}" )
+		}
+		for_each_extra_pkg show_extra_pkg
+		echo "extrapkgs='${crosspkgs[*]}'"
+	fi
+
 	echo "arch=${TARCH}"
 	echo "target=${CTARGET}"
 	echo "category=cross-${CTARGET}"
@@ -802,6 +839,9 @@ einfo "Extra: gcc pass:       DO IT"
 ex_gdb && {
 einfo "Extra: gdb:            DO IT"
 }
+ex_pkgs && {
+einfo "Extra:                 ${XPKGS[*]}"
+}
 echo
 einfo "CROSSDEV_OVERLAY:      ${CROSSDEV_OVERLAY}"
 einfo "PORT_LOGDIR:           ${PORT_LOGDIR}"
@@ -1073,6 +1113,7 @@ done
 for v in B G K L D ; do
 	set_portage ${v}
 done
+for_each_extra_pkg set_portage X
 set_metadata
 
 # filter out revdep rebuild stuff #182601
@@ -1230,5 +1271,10 @@ fi
 EOPTS="${EOPTS_UP} --newuse"
 ex_gcc && USE="${GUSE} ${USE}" doemerge ${GPKG} ${GPKG}-extra
 ex_gdb && USE="${DUSE} ${USE}" doemerge ${DPKG}
+if ex_pkgs ; then
+	for pkg in "${XPKGS[@]}" ; do
+		doemerge "${pkg#*/}"
+	done
+fi
 
 exit 0