Write oh-checkbuilddeps.

3 files changed, 50 insertions, 2 deletions

diff --git a/src/Makefile.in b/src/Makefile.in
index cdf0b73..45be948 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -27,7 +27,7 @@ BINDIR = @bindir@
 
 .SUFFIXES:
 
-OBJS = opkbuild oh-applypatches oh-strip \
+OBJS = opkbuild oh-checkbuilddeps oh-applypatches oh-strip \
        oh-installfiles oh-gencontrol oh-buildopk
 
 .PHONY: all
diff --git a/src/oh-checkbuilddeps b/src/oh-checkbuilddeps
new file mode 100644
index 0000000..0655fa6
--- /dev/null
+++ b/src/oh-checkbuilddeps
@@ -0,0 +1,43 @@
+#! /bin/sh
+#
+# opkhelper
+# src/oh-checkbuilddeps
+# Make sure that package build dependencies are installed.
+#
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# 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 3 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/>.
+
+. @@LIBDIR@@/opkhelper/controlfields
+
+print_usage()
+{
+	printf 'Usage: %s...\n' "$1"
+}
+
+if [ ${#} -ne 0 ]; then
+	print_usage ${0} >&2
+	exit 1
+fi
+
+printf 'oh-checkbuilddeps: Checking build dependencies...\n'
+
+for dep in $(oh_get_field Build-Depends); do
+	# TODO: Test this.
+	if [ -z $(opkg status "${dep}" | grep "^Package: ${dep}") ]; then
+		printf 'oh-checkbuilddeps: Error: Dependency %s not installed.\n' \
+			"${dep}" >&2
+		exit 1
+	fi
+done
diff --git a/src/opkbuild b/src/opkbuild
index 03389f8..10d5c6e 100644
--- a/src/opkbuild
+++ b/src/opkbuild
@@ -82,10 +82,15 @@ mkdir tmp
 cd tmp
 
 # Get source package name and version.
-printf 'opkbuild: Reading source package control fields...\n\n'
+printf 'opkbuild: Reading source package control fields...\n'
 srcpkg=$(oh_get_field Source)
 version=$(oh_get_field Version)
 
+# Check build dependencies.
+oh-checkbuilddeps || error "${srcpkg}-src"
+
+printf '\n'
+
 # Build *-src package.
 printf 'opkbuild: Attempting to build package "%s"...\n' "${srcpkg}-src"
 printf 'opkbuild: Installing files for package "%s"...\n' "${srcpkg}-src"