xbps-src: multiple performance improvements.

- use xbps-checkvers(1) to resolve dependencies.
- all dependencies are installed at once for the host and target.
- the `show-build-deps` target is now much faster.
- the `update-bulk/show-repo-updates` targets are now much faster.
- the `update-sys/show-sys-updates` targets are now much faster.
- the `bootstrap` target now works on musl hosts.
- simplified some loops.
- use cut(1) rather than awk(1) where applicable.
- multiple random changes to improve performance.

Based on work started by @Duncaen on void-linux#12433

Close void-linux#12433
Close void-linux#11282

.gitignore

@@ -7,3 +7,4 @@ masterdir*
 hostdir*
 etc/conf
 etc/virtual
+.xbps-checkvers.plist

common/hooks/do-pkg/00-gen-pkg.sh

@@ -32,16 +32,16 @@ genpkg() {
 
 	_preserve=${preserve:+-p}
 	if [ -s ${PKGDESTDIR}/rdeps ]; then
-		_deps="$(cat ${PKGDESTDIR}/rdeps)"
+		_deps="$(<${PKGDESTDIR}/rdeps)"
 	fi
 	if [ -s ${PKGDESTDIR}/shlib-provides ]; then
-		_shprovides="$(cat ${PKGDESTDIR}/shlib-provides)"
+		_shprovides="$(<${PKGDESTDIR}/shlib-provides)"
 	fi
 	if [ -s ${PKGDESTDIR}/shlib-requires ]; then
-		_shrequires="$(cat ${PKGDESTDIR}/shlib-requires)"
+		_shrequires="$(<${PKGDESTDIR}/shlib-requires)"
 	fi
 	if [ -s ${XBPS_STATEDIR}/gitrev ]; then
-		_gitrevs="$(cat ${XBPS_STATEDIR}/gitrev)"
+		_gitrevs="$(<${XBPS_STATEDIR}/gitrev)"
 	fi
 
 	# Stripping whitespaces

common/hooks/pre-pkg/04-generate-runtime-deps.sh

@@ -5,7 +5,7 @@
 #	- Generates shlib-requires file for xbps-create(1)
 
 add_rundep() {
-    local dep="$1" i= rpkgdep= _depname= _rdeps= found=
+    local dep="$1" i= rpkgdep= _depname= found=
 
     _depname="$($XBPS_UHELPER_CMD getpkgdepname ${dep} 2>/dev/null)"
     if [ -z "${_depname}" ]; then
@@ -68,26 +68,19 @@ hook() {
     exec < $depsftmp
     while read f; do
         lf=${f#${PKGDESTDIR}}
-	if [ "${skiprdeps/${lf}/}" != "${skiprdeps}" ]; then
-		msg_normal "Skipping dependency scan for ${lf}\n"
-		continue
-	fi
+	    if [ "${skiprdeps/${lf}/}" != "${skiprdeps}" ]; then
+		    msg_normal "Skipping dependency scan for ${lf}\n"
+		    continue
+	    fi
         case "$(file -bi "$f")" in
             application/x-*executable*|application/x-sharedlib*)
                 for nlib in $($OBJDUMP -p "$f"|grep NEEDED|awk '{print $2}'); do
-                    if [ -z "$verify_deps" ]; then
-                        verify_deps="$nlib"
-                        continue
-                    fi
+                    [ -z "$verify_deps" ] && verify_deps="$nlib" && continue
+                    found=0
                     for j in ${verify_deps}; do
-                        [ "$j" != "$nlib" ] && continue
-                        found_dup=1
-                        break
+                        [[ $j == $nlib ]] && found=1 && break
                     done
-                    if [ -z "$found_dup" ]; then
-                        verify_deps="$verify_deps $nlib"
-                    fi
-                    unset found_dup
+                    [[ $found -eq 0 ]] && verify_deps="$verify_deps $nlib"
                 done
                 ;;
         esac
@@ -97,13 +90,13 @@ hook() {
 
     #
     # Add required run time packages by using required shlibs resolved
-    # above, the mapping is done thru the mapping_shlib_binpkg.txt file.
+    # above, the mapping is done thru the common/shlibs file.
     #
     for f in ${verify_deps}; do
         unset _f j rdep _rdep rdepcnt soname _pkgname _rdepver found
         _f=$(echo "$f"|sed -E 's|\+|\\+|g')
-        rdep="$(grep -E "^${_f}[[:blank:]]+.*$" $mapshlibs|awk '{print $2}')"
-        rdepcnt="$(grep -E "^${_f}[[:blank:]]+.*$" $mapshlibs|awk '{print $2}'|wc -l)"
+        rdep="$(grep -E "^${_f}[[:blank:]]+.*$" $mapshlibs|cut -d ' ' -f2)"
+        rdepcnt="$(grep -E "^${_f}[[:blank:]]+.*$" $mapshlibs|cut -d ' ' -f2|wc -l)"
         if [ -z "$rdep" ]; then
             # Ignore libs by current pkg
             soname=$(find ${PKGDESTDIR} -name "$f")
@@ -121,15 +114,9 @@ hook() {
                 _pkgname=$($XBPS_UHELPER_CMD getpkgname "$j")
                 # if there's a SONAME matching pkgname, use it.
                 for x in ${pkgname} ${subpackages}; do
-                    if [ "${_pkgname}" = "${x}" ]; then
-                        found=1
-                        break
-                    fi
+                    [[ $_pkgname == $x ]] && found=1 && break
                 done
-                if [ -n "$found" ]; then
-                    _rdep=$j
-                    break
-                fi
+                [[ $found ]] && _rdep=$j && break
             done
             if [ -z "${_rdep}" ]; then
                 # otherwise pick up the first one.

common/hooks/pre-pkg/99-pkglint.sh

@@ -119,7 +119,7 @@ hook() {
 				msg_red "${pkgver}: SONAME bump detected: ${libname}.so.${conflictRev} -> ${libname}.so.${rev}\n"
 				msg_red "${pkgver}: please update common/shlibs with this line: \"${libname}.so.${rev} ${pkgver}\"\n"
 				msg_red "${pkgver}: all reverse dependencies should also be revbumped to be rebuilt against ${libname}.so.${rev}:\n"
-				_revdeps=$($XBPS_QUERY_XCMD -Rs ${libname}.so -p shlib-requires|awk '{print $1}')
+				_revdeps=$($XBPS_QUERY_XCMD -Rs ${libname}.so -p shlib-requires|cut -d ' ' -f1)
 				for x in ${_revdeps}; do
 					msg_red "   ${x%:}\n"
 				done
@@ -128,7 +128,7 @@ hook() {
 			# Try to match provided shlibs in virtual packages.
 			for f in ${provides}; do
 				_vpkgname="$($XBPS_UHELPER_CMD getpkgname ${f} 2>/dev/null)"
-				_spkgname="$(grep "^${filename}" $mapshlibs | awk '{print $2}')"
+				_spkgname="$(grep "^${filename}" $mapshlibs | cut -d ' ' -f2)"
 				_libpkgname="$($XBPS_UHELPER_CMD getpkgname ${_spkgname} 2>/dev/null)"
 				if [ -z "${_spkgname}" -o  -z "${_libpkgname}" ]; then
 					continue

common/xbps-src/libexec/build.sh

@@ -43,10 +43,6 @@ if [ "$PKGNAME" != "$XBPS_TARGET_PKG" -o -z "$XBPS_SKIP_DEPS" ]; then
     install_pkg_deps $PKGNAME $XBPS_TARGET_PKG pkg $XBPS_CROSS_BUILD $XBPS_CROSS_PREPARE || exit $?
 fi
 
-if [ -z "$XBPS_CROSS_PREPARE" ]; then
-    install_cross_pkg $XBPS_CROSS_BUILD || exit $?
-fi
-
 # Fetch distfiles after installing required dependencies,
 # because some of them might be required for do_fetch().
 $XBPS_LIBEXECDIR/xbps-src-dofetch.sh $SOURCEPKG $XBPS_CROSS_BUILD || exit 1