Split check_software() to libmakepkg

This opens the door for third parties who provide extensions to
libmakepkg to supply scripts that confirm the presence of their
dependant executables.

Signed-off-by: Que Quotion <quequotion@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>

15 files changed, 537 insertions, 172 deletions

diff --git a/scripts/Makefile.am b/scripts/Makefile.am
index 26c2e10d..b4c53953 100644
--- a/scripts/Makefile.am
+++ b/scripts/Makefile.am
@@ -40,6 +40,7 @@ LIBRARY = \
 libmakepkgdir = $(datarootdir)/makepkg
 
 LIBMAKEPKGDIRS = \
+	executable \
 	integrity \
 	lint_config \
 	lint_package \
@@ -49,6 +50,17 @@ LIBMAKEPKGDIRS = \
 	util
 
 LIBMAKEPKG_IN = \
+	libmakepkg/executable.sh \
+	libmakepkg/executable/ccache.sh \
+	libmakepkg/executable/checksum.sh \
+	libmakepkg/executable/distcc.sh \
+	libmakepkg/executable/fakeroot.sh \
+	libmakepkg/executable/gpg.sh \
+	libmakepkg/executable/gzip.sh \
+	libmakepkg/executable/pacman.sh \
+	libmakepkg/executable/strip.sh \
+	libmakepkg/executable/sudo.sh \
+	libmakepkg/executable/vcs.sh \
 	libmakepkg/integrity.sh \
 	libmakepkg/integrity/generate_checksum.sh \
 	libmakepkg/integrity/generate_signature.sh \
diff --git a/scripts/libmakepkg/executable.sh.in b/scripts/libmakepkg/executable.sh.in
new file mode 100644
index 00000000..68c48038
--- /dev/null
+++ b/scripts/libmakepkg/executable.sh.in
@@ -0,0 +1,45 @@
+#!/bin/bash
+#
+#   executable.sh - confirm presence of dependent executables
+#
+#   Copyright (c) 2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/message.sh"
+
+
+declare -a executable_functions
+
+for lib in "$LIBRARY/executable/"*.sh; do
+	source "$lib"
+done
+
+readonly -a executable_functions
+
+check_software() {
+	local ret=0
+
+	for func in ${executable_functions[@]}; do
+		$func
+	done
+
+	return $ret
+}
diff --git a/scripts/libmakepkg/executable/ccache.sh.in b/scripts/libmakepkg/executable/ccache.sh.in
new file mode 100644
index 00000000..dafde076
--- /dev/null
+++ b/scripts/libmakepkg/executable/ccache.sh.in
@@ -0,0 +1,37 @@
+#!/usr/bin/bash
+#
+#   ccache.sh - Confirm presence of ccache binary
+#
+#   Copyright (c) 2011-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_CCACHE_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_CCACHE_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/option.sh"
+
+executable_functions+=('executable_ccache')
+
+executable_ccache() {
+	if check_buildoption "ccache" "y"; then
+		if ! type -p ccache >/dev/null; then
+			error "$(gettext "Cannot find the %s binary required for compiler cache usage.")" "ccache"
+			ret=1
+		fi
+	fi
+}
diff --git a/scripts/libmakepkg/executable/checksum.sh.in b/scripts/libmakepkg/executable/checksum.sh.in
new file mode 100644
index 00000000..9783d4ee
--- /dev/null
+++ b/scripts/libmakepkg/executable/checksum.sh.in
@@ -0,0 +1,42 @@
+#!/usr/bin/bash
+#
+#   checksum.sh - Confirm presence of binaries for checksum operations
+#
+#   Copyright (c) 2016-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_CHECKSUM_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_CHECKSUM_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+
+executable_functions+=('executable_checksum')
+
+executable_checksum() {
+	if (( GENINTEG || ! SKIPCHECKSUMS )); then
+		local integlist
+		IFS=$'\n' read -rd '' -a integlist < <(get_integlist)
+
+		local integ
+		for integ in "${integlist[@]}"; do
+			if ! type -p "${integ}sum" >/dev/null; then
+				error "$(gettext "Cannot find the %s binary required for source file checksums operations.")" "${integ}sum"
+				return 1
+			fi
+		done
+	fi
+}
diff --git a/scripts/libmakepkg/executable/distcc.sh.in b/scripts/libmakepkg/executable/distcc.sh.in
new file mode 100644
index 00000000..b9883f6b
--- /dev/null
+++ b/scripts/libmakepkg/executable/distcc.sh.in
@@ -0,0 +1,37 @@
+#!/usr/bin/bash
+#
+#   distcc.sh - Confirm presence of distcc binary
+#
+#   Copyright (c) 2011-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_DISTCC_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_DISTCC_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/option.sh"
+
+executable_functions+=('executable_distcc')
+
+executable_distcc() {
+	if check_buildoption "distcc" "y"; then
+		if ! type -p distcc >/dev/null; then
+			error "$(gettext "Cannot find the %s binary required for distributed compilation.")" "distcc"
+			ret=1
+		fi
+	fi
+}
diff --git a/scripts/libmakepkg/executable/fakeroot.sh.in b/scripts/libmakepkg/executable/fakeroot.sh.in
new file mode 100644
index 00000000..e22d9a96
--- /dev/null
+++ b/scripts/libmakepkg/executable/fakeroot.sh.in
@@ -0,0 +1,37 @@
+#!/usr/bin/bash
+#
+#   fakeroot.sh - Confirm presence of fakeroot binary
+#
+#   Copyright (c) 2011-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_FAKEROOT_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_FAKEROOT_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/option.sh"
+
+executable_functions+=('executable_fakeroot')
+
+executable_fakeroot() {
+	if check_buildenv "fakeroot" "y" && (( EUID > 0 )); then
+		if ! type -p fakeroot >/dev/null; then
+			error "$(gettext "Cannot find the %s binary.")" "fakeroot"
+			ret=1
+		fi
+	fi
+}
diff --git a/scripts/libmakepkg/executable/gpg.sh.in b/scripts/libmakepkg/executable/gpg.sh.in
new file mode 100644
index 00000000..c0f57013
--- /dev/null
+++ b/scripts/libmakepkg/executable/gpg.sh.in
@@ -0,0 +1,44 @@
+#!/usr/bin/bash
+#
+#   gpg.sh - Confirm presence of gpg binary
+#
+#   Copyright (c) 2011-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_GPG_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_GPG_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/option.sh"
+
+executable_functions+=('executable_gpg')
+
+executable_gpg() {
+	if [[ $SIGNPKG == 'y' ]] || { [[ -z $SIGNPKG ]] && check_buildenv "sign" "y"; }; then
+		if ! type -p gpg >/dev/null; then
+			error "$(gettext "Cannot find the %s binary required for signing packages.")" "gpg"
+			ret=1
+		fi
+	fi
+
+	if (( ! SKIPPGPCHECK )) && source_has_signatures; then
+		if ! type -p gpg >/dev/null; then
+			error "$(gettext "Cannot find the %s binary required for verifying source files.")" "gpg"
+			ret=1
+		fi
+	fi
+}
diff --git a/scripts/libmakepkg/executable/gzip.sh.in b/scripts/libmakepkg/executable/gzip.sh.in
new file mode 100644
index 00000000..66748320
--- /dev/null
+++ b/scripts/libmakepkg/executable/gzip.sh.in
@@ -0,0 +1,37 @@
+#!/usr/bin/bash
+#
+#   gzip.sh - Confirm presence of gzip binary
+#
+#   Copyright (c) 2011-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_GZIP_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_GZIP_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/option.sh"
+
+executable_functions+=('executable_gzip')
+
+executable_gzip() {
+	if check_option "zipman" "y"; then
+		if ! type -p gzip >/dev/null; then
+			error "$(gettext "Cannot find the %s binary required for compressing man and info pages.")" "gzip"
+			ret=1
+		fi
+	fi
+}
diff --git a/scripts/libmakepkg/executable/meson.build b/scripts/libmakepkg/executable/meson.build
new file mode 100644
index 00000000..8536a540
--- /dev/null
+++ b/scripts/libmakepkg/executable/meson.build
@@ -0,0 +1,26 @@
+libmakepkg_module = 'executable'
+
+sources = [
+  'ccache.sh.in',
+  'checksum.sh.in',
+  'distcc.sh.in',
+  'fakeroot.sh.in',
+  'gpg.sh.in',
+  'gzip.sh.in',
+  'pacman.sh.in',
+  'strip.sh.in',
+  'sudo.sh.in',
+  'vcs.sh.in',
+]
+
+foreach src : sources
+  output_dir = join_paths(get_option('datadir'), 'makepkg', libmakepkg_module)
+
+  custom_target(
+    libmakepkg_module + '_' + src.underscorify(),
+    command : [ SCRIPT_EDITOR, '@INPUT@', '@OUTPUT@' ],
+    input : src,
+    output : '@BASENAME@',
+    install : true,
+    install_dir : output_dir)
+endforeach
diff --git a/scripts/libmakepkg/executable/pacman.sh.in b/scripts/libmakepkg/executable/pacman.sh.in
new file mode 100644
index 00000000..d9967f45
--- /dev/null
+++ b/scripts/libmakepkg/executable/pacman.sh.in
@@ -0,0 +1,37 @@
+#!/usr/bin/bash
+#
+#   pacman.sh - Confirm presence of pacman binary
+#
+#   Copyright (c) 2012-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_PACMAN_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_PACMAN_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/option.sh"
+
+executable_functions+=('executable_pacman')
+
+executable_pacman() {
+    if (( ! NODEPS || DEP_BIN || RMDEPS || INSTALL )); then
+		if [[ -z $PACMAN_PATH ]]; then
+			error "$(gettext "Cannot find the %s binary required for dependency operations.")" "$PACMAN"
+			ret=1
+		fi
+	fi
+}
diff --git a/scripts/libmakepkg/executable/strip.sh.in b/scripts/libmakepkg/executable/strip.sh.in
new file mode 100644
index 00000000..a6b81db6
--- /dev/null
+++ b/scripts/libmakepkg/executable/strip.sh.in
@@ -0,0 +1,37 @@
+#!/usr/bin/bash
+#
+#   strip.sh - Confirm presense of strip binary
+#
+#   Copyright (c) 2011-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_STRIP_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_STRIP_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/option.sh"
+
+executable_functions+=('executable_strip')
+
+executable_strip() {
+	if check_option "strip" "y"; then
+		if ! type -p strip >/dev/null; then
+			error "$(gettext "Cannot find the %s binary required for object file stripping.")" "strip"
+			ret=1
+		fi
+	fi
+}
diff --git a/scripts/libmakepkg/executable/sudo.sh.in b/scripts/libmakepkg/executable/sudo.sh.in
new file mode 100644
index 00000000..7ec18ec5
--- /dev/null
+++ b/scripts/libmakepkg/executable/sudo.sh.in
@@ -0,0 +1,36 @@
+#!/usr/bin/bash
+#
+#   sudo.sh - Confirm presence of sudo binary
+#
+#   Copyright (c) 2011-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_SUDO_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_SUDO_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/option.sh"
+
+executable_functions+=('executable_sudo')
+
+executable_sudo() {
+    if (( DEP_BIN || RMDEPS || INSTALL )); then
+        if ! type -p sudo >/dev/null; then
+            warning "$(gettext "Cannot find the %s binary. Will use %s to acquire root privileges.")" "sudo" "su"
+        fi
+    fi
+}
diff --git a/scripts/libmakepkg/executable/vcs.sh.in b/scripts/libmakepkg/executable/vcs.sh.in
new file mode 100644
index 00000000..527d6f22
--- /dev/null
+++ b/scripts/libmakepkg/executable/vcs.sh.in
@@ -0,0 +1,109 @@
+#!/usr/bin/bash
+#
+#   vcs.sh - Confirm presence of binaries for VCS operations
+#
+#   Copyright (c) 2014-2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_EXECUTABLE_VCS_SH" ]] && return
+LIBMAKEPKG_EXECUTABLE_VCS_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/option.sh"
+
+executable_functions+=('executable_vcs')
+
+get_vcsclient() {
+	local proto=${1%%+*}
+
+	local i
+	for i in "${VCSCLIENTS[@]}"; do
+		local handler="${i%%::*}"
+		if [[ $proto = "$handler" ]]; then
+			local client="${i##*::}"
+			break
+		fi
+	done
+
+	# if we didn't find an client, return an error
+	if [[ -z $client ]]; then
+		error "$(gettext "Unknown download protocol: %s")" "$proto"
+		plain "$(gettext "Aborting...")"
+		exit $E_CONFIG_ERROR
+	fi
+
+	printf "%s\n" "$client"
+}
+
+check_vcs_software() {
+	local netfile all_sources all_deps deps ret=0
+
+	if (( SOURCEONLY == 1 )); then
+		# we will not download VCS sources
+		return $ret
+	fi
+
+	if [[ -z $PACMAN_PATH ]]; then
+		warning "$(gettext "Cannot find the %s binary needed to check VCS source requirements.")" "$PACMAN"
+		return $ret
+	fi
+
+	# we currently only use global depends/makedepends arrays for --syncdeps
+	for attr in depends makedepends; do
+		get_pkgbuild_attribute "$pkg" "$attr" 1 'deps'
+		all_deps+=("${deps[@]}")
+
+		get_pkgbuild_attribute "$pkg" "${attr}_$CARCH" 1 'deps'
+		all_deps+=("${deps[@]}")
+	done
+
+	get_all_sources_for_arch 'all_sources'
+	for netfile in ${all_sources[@]}; do
+		local proto=$(get_protocol "$netfile")
+
+		case $proto in
+			bzr*|git*|hg*|svn*)
+				if ! type -p ${proto%%+*} > /dev/null; then
+					local client
+					client=$(get_vcsclient "$proto") || exit $?
+					# ensure specified program is installed
+					local uninstalled
+					uninstalled=$(check_deps "$client") || exit $E_INSTALL_DEPS_FAILED
+					# if not installed, check presence in depends or makedepends
+					if [[ -n "$uninstalled" ]] && (( ! NODEPS || ( VERIFYSOURCE && !DEP_BIN ) )); then
+						if ! in_array "$client" ${all_deps[@]}; then
+							error "$(gettext "Cannot find the %s package needed to handle %s sources.")" \
+									"$client" "${proto%%+*}"
+							ret=1
+						fi
+					fi
+				fi
+				;;
+			*)
+				# non VCS source
+				;;
+		esac
+	done
+
+	return $ret
+}
+
+executable_vcs() {
+	if ! check_vcs_software; then
+		ret=1
+	fi
+}
diff --git a/scripts/libmakepkg/meson.build b/scripts/libmakepkg/meson.build
index 07475b4d..872e61ca 100644
--- a/scripts/libmakepkg/meson.build
+++ b/scripts/libmakepkg/meson.build
@@ -1,4 +1,5 @@
 libmakepkg_modules = [
+  { 'name' : 'executable',    'has_subdir' : true },
   { 'name' : 'integrity',     'has_subdir' : true },
   { 'name' : 'lint_config',   'has_subdir' : true },
   { 'name' : 'lint_package',  'has_subdir' : true },
diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in
index 9365801c..d92e4aac 100644
--- a/scripts/makepkg.sh.in
+++ b/scripts/makepkg.sh.in
@@ -897,178 +897,6 @@ install_package() {
 	fi
 }
 
-get_vcsclient() {
-	local proto=${1%%+*}
-
-	local i
-	for i in "${VCSCLIENTS[@]}"; do
-		local handler="${i%%::*}"
-		if [[ $proto = "$handler" ]]; then
-			local client="${i##*::}"
-			break
-		fi
-	done
-
-	# if we didn't find an client, return an error
-	if [[ -z $client ]]; then
-		error "$(gettext "Unknown download protocol: %s")" "$proto"
-		plain "$(gettext "Aborting...")"
-		exit $E_CONFIG_ERROR
-	fi
-
-	printf "%s\n" "$client"
-}
-
-check_vcs_software() {
-	local netfile all_sources all_deps deps ret=0
-
-	if (( SOURCEONLY == 1 )); then
-		# we will not download VCS sources
-		return $ret
-	fi
-
-	if [[ -z $PACMAN_PATH ]]; then
-		warning "$(gettext "Cannot find the %s binary needed to check VCS source requirements.")" "$PACMAN"
-		return $ret
-	fi
-
-	# we currently only use global depends/makedepends arrays for --syncdeps
-	for attr in depends makedepends; do
-		get_pkgbuild_attribute "$pkg" "$attr" 1 'deps'
-		all_deps+=("${deps[@]}")
-
-		get_pkgbuild_attribute "$pkg" "${attr}_$CARCH" 1 'deps'
-		all_deps+=("${deps[@]}")
-	done
-
-	get_all_sources_for_arch 'all_sources'
-	for netfile in ${all_sources[@]}; do
-		local proto=$(get_protocol "$netfile")
-
-		case $proto in
-			bzr*|git*|hg*|svn*)
-				if ! type -p ${proto%%+*} > /dev/null; then
-					local client
-					client=$(get_vcsclient "$proto") || exit $?
-					# ensure specified program is installed
-					local uninstalled
-					uninstalled=$(check_deps "$client") || exit $E_INSTALL_DEPS_FAILED
-					# if not installed, check presence in depends or makedepends
-					if [[ -n "$uninstalled" ]] && (( ! NODEPS || ( VERIFYSOURCE && !DEP_BIN ) )); then
-						if ! in_array "$client" ${all_deps[@]}; then
-							error "$(gettext "Cannot find the %s package needed to handle %s sources.")" \
-									"$client" "${proto%%+*}"
-							ret=1
-						fi
-					fi
-				fi
-				;;
-			*)
-				# non VCS source
-				;;
-		esac
-	done
-
-	return $ret
-}
-
-check_software() {
-	# check for needed software
-	local ret=0
-
-	# check for PACMAN if we need it
-	if (( ! NODEPS || DEP_BIN || RMDEPS || INSTALL )); then
-		if [[ -z $PACMAN_PATH ]]; then
-			error "$(gettext "Cannot find the %s binary required for dependency operations.")" "$PACMAN"
-			ret=1
-		fi
-	fi
-
-	# check for sudo if we will need it during makepkg execution
-	if (( DEP_BIN || RMDEPS || INSTALL )); then
-		if ! type -p sudo >/dev/null; then
-			warning "$(gettext "Cannot find the %s binary. Will use %s to acquire root privileges.")" "sudo" "su"
-		fi
-	fi
-
-	# fakeroot - correct package file permissions
-	if check_buildenv "fakeroot" "y" && (( EUID > 0 )); then
-		if ! type -p fakeroot >/dev/null; then
-			error "$(gettext "Cannot find the %s binary.")" "fakeroot"
-			ret=1
-		fi
-	fi
-
-	# gpg - package signing
-	if [[ $SIGNPKG == 'y' ]] || { [[ -z $SIGNPKG ]] && check_buildenv "sign" "y"; }; then
-		if ! type -p gpg >/dev/null; then
-			error "$(gettext "Cannot find the %s binary required for signing packages.")" "gpg"
-			ret=1
-		fi
-	fi
-
-	# gpg - source verification
-	if (( ! SKIPPGPCHECK )) && source_has_signatures; then
-		if ! type -p gpg >/dev/null; then
-			error "$(gettext "Cannot find the %s binary required for verifying source files.")" "gpg"
-			ret=1
-		fi
-	fi
-
-	# checksum operations
-	if (( GENINTEG || ! SKIPCHECKSUMS )); then
-		local integlist
-		IFS=$'\n' read -rd '' -a integlist < <(get_integlist)
-
-		local integ
-		for integ in "${integlist[@]}"; do
-			if ! type -p "${integ}sum" >/dev/null; then
-				error "$(gettext "Cannot find the %s binary required for source file checksums operations.")" "${integ}sum"
-				ret=1
-			fi
-		done
-	fi
-
-	# distcc - compilation with distcc
-	if check_buildoption "distcc" "y"; then
-		if ! type -p distcc >/dev/null; then
-			error "$(gettext "Cannot find the %s binary required for distributed compilation.")" "distcc"
-			ret=1
-		fi
-	fi
-
-	# ccache - compilation with ccache
-	if check_buildoption "ccache" "y"; then
-		if ! type -p ccache >/dev/null; then
-			error "$(gettext "Cannot find the %s binary required for compiler cache usage.")" "ccache"
-			ret=1
-		fi
-	fi
-
-	# strip - strip symbols from binaries/libraries
-	if check_option "strip" "y"; then
-		if ! type -p strip >/dev/null; then
-			error "$(gettext "Cannot find the %s binary required for object file stripping.")" "strip"
-			ret=1
-		fi
-	fi
-
-	# gzip - compressig man and info pages
-	if check_option "zipman" "y"; then
-		if ! type -p gzip >/dev/null; then
-			error "$(gettext "Cannot find the %s binary required for compressing man and info pages.")" "gzip"
-			ret=1
-		fi
-	fi
-
-	# tools to download vcs sources
-	if ! check_vcs_software; then
-		ret=1
-	fi
-
-	return $ret
-}
-
 check_build_status() {
 	if (( ! SPLITPKG )); then
 		fullver=$(get_full_version)