Linux build: Use sysroot when calculating dependencies

third_party/dpkg-dev/triplettable

Index: third_party/dpkg-dev/triplettable
diff --git a/third_party/dpkg-dev/triplettable b/third_party/dpkg-dev/triplettable
new file mode 100644
index 0000000000000000000000000000000000000000..a2c683f2e83b344da78ed8cb415efc530f4cd1d5
--- /dev/null
+++ b/third_party/dpkg-dev/triplettable
@@ -0,0 +1,31 @@
+# Bidirectional mapping between a Debian triplet and a Debian arch.
+#
+# Supported variables: <cpu>
+#
+# <Debian triplet>	<Debian arch>
+uclibceabi-linux-arm	uclibc-linux-armel
+uclibc-linux-<cpu>	uclibc-linux-<cpu>
+musleabihf-linux-arm	musl-linux-armhf
+musl-linux-<cpu>	musl-linux-<cpu>
+gnueabihf-linux-arm	armhf
+gnueabi-linux-arm	armel
+gnuabin32-linux-mips64el	mipsn32el
+gnuabin32-linux-mips64	mipsn32
+gnuabi64-linux-mips64el	mips64el
+gnuabi64-linux-mips64	mips64
+gnuspe-linux-powerpc	powerpcspe
+gnux32-linux-amd64	x32
+gnulp-linux-i386	lpia
+gnu-linux-<cpu>		<cpu>
+gnu-kfreebsd-<cpu>	kfreebsd-<cpu>
+gnu-knetbsd-<cpu>	knetbsd-<cpu>
+gnu-kopensolaris-<cpu>	kopensolaris-<cpu>
+gnu-hurd-<cpu>		hurd-<cpu>
+bsd-freebsd-<cpu>	freebsd-<cpu>
+bsd-openbsd-<cpu>	openbsd-<cpu>
+bsd-netbsd-<cpu>	netbsd-<cpu>
+bsd-darwin-<cpu>	darwin-<cpu>
+sysv-solaris-<cpu>	solaris-<cpu>
+uclibceabi-uclinux-arm	uclinux-armel
+uclibc-uclinux-<cpu>	uclinux-<cpu>
+tos-mint-m68k		mint-m68k