diff --git a/build b/build
index 9166427..0fce9d0 100755
--- a/build
+++ b/build
@@ -27,6 +27,6 @@ install() {
 	fetch
 	unpack
 	patch
-	build
-	install
+	build || echo "Failed to build $1" >> $top/morpheus.log
+	install || echo "Failed to install $1" >> $top/morpheus.log
 )
diff --git a/clean b/clean
index 1b612ad..9c62efe 100755
--- a/clean
+++ b/clean
@@ -1,3 +1,3 @@
 #!/bin/sh
 
-rm -rf root src cross
+rm -rf root src cross morpheus.log
diff --git a/cross-scripts/curl b/cross-scripts/curl
index d852ab5..31ddcee 100644
--- a/cross-scripts/curl
+++ b/cross-scripts/curl
@@ -13,13 +13,13 @@ unpack() {
 build() {
 	pushd src/curl-7.32.0
 	CC=musl-gcc ./configure --prefix=$top/cross --with-ssl \
-		--with-random=/dev/urandom --disable-shared
-	make CC=musl-gcc -j$nprocs
+		--with-random=/dev/urandom --disable-shared || return 1
+	make CC=musl-gcc -j$nprocs || return 1
 	popd
 }
 
 install() {
 	pushd src/curl-7.32.0
-	make install
+	make install || return 1
 	popd
 }
diff --git a/cross-scripts/libevent b/cross-scripts/libevent
index a726079..19e42c7 100644
--- a/cross-scripts/libevent
+++ b/cross-scripts/libevent
@@ -12,13 +12,13 @@ unpack() {
 
 build() {
 	pushd src/libevent-2.0.21-stable
-	CC=musl-gcc ./configure --prefix=$top/cross --disable-shared
-	make CC=musl-gcc -j$nprocs
+	CC=musl-gcc ./configure --prefix=$top/cross --disable-shared || return 1
+	make CC=musl-gcc -j$nprocs || return 1
 	popd
 }
 
 install() {
 	pushd src/libevent-2.0.21-stable
-	make install
+	make install || return 1
 	popd
 }
diff --git a/cross-scripts/libsigc++ b/cross-scripts/libsigc++
index 5dc976a..6e97c72 100644
--- a/cross-scripts/libsigc++
+++ b/cross-scripts/libsigc++
@@ -12,13 +12,13 @@ unpack() {
 
 build() {
 	pushd src/libsigc++-2.3.1
-	CC=musl-gcc ./configure --prefix=$top/cross --disable-shared --enable-static
-	make CC=musl-gcc -j$nprocs
+	CC=musl-gcc ./configure --prefix=$top/cross --disable-shared --enable-static || return 1
+	make CC=musl-gcc -j$nprocs || return 1
 	popd
 }
 
 install() {
 	pushd src/libsigc++-2.3.1
-	make install
+	make install || return 1
 	popd
 }
diff --git a/cross-scripts/libtorrent b/cross-scripts/libtorrent
index 6774f96..be2371f 100644
--- a/cross-scripts/libtorrent
+++ b/cross-scripts/libtorrent
@@ -12,13 +12,13 @@ unpack() {
 
 build() {
 	pushd src/libtorrent-0.13.3
-	CC=musl-gcc ./configure --prefix=$top/cross --disable-shared
-	make CC=musl-gcc -j$nprocs
+	CC=musl-gcc ./configure --prefix=$top/cross --disable-shared || return 1
+	make CC=musl-gcc -j$nprocs || return 1
 	popd
 }
 
 install() {
 	pushd src/libtorrent-0.13.3
-	make install
+	make install || return 1
 	popd
 }
diff --git a/cross-scripts/musl b/cross-scripts/musl
index 2c97687..c7c9af4 100644
--- a/cross-scripts/musl
+++ b/cross-scripts/musl
@@ -12,13 +12,13 @@ unpack() {
 
 build() {
 	pushd src/musl-0.9.13
-	./configure --prefix=$top/cross --syslibdir=$top/cross/lib --disable-shared
-	make -j$nprocs
+	./configure --prefix=$top/cross --syslibdir=$top/cross/lib --disable-shared || return 1
+	make -j$nprocs || return 1
 	popd
 }
 
 install() {
 	pushd src/musl-0.9.13
-	make install
+	make install || return 1
 	popd
 }
diff --git a/cross-scripts/ncurses b/cross-scripts/ncurses
index c16ce27..c763555 100644
--- a/cross-scripts/ncurses
+++ b/cross-scripts/ncurses
@@ -15,13 +15,13 @@ build() {
 	wget -c $mirror/ncurses-fallback.c -O ncurses/fallback.c
 	CC=musl-gcc ./configure --prefix=$top/cross --without-tests \
 		--with-normal --enable-sigwinch --disable-nls --without-dlsym \
-		--without-cxx-binding --with-fallbacks="vt100"
-	make CC=musl-gcc -j$nprocs
+		--without-cxx-binding --with-fallbacks="vt100" || return 1
+	make CC=musl-gcc -j$nprocs || return 1
 	popd
 }
 
 install() {
 	pushd src/ncurses-5.9
-	make install
+	make install || return 1
 	popd
 }
diff --git a/cross-scripts/zlib b/cross-scripts/zlib
index 37a306f..86abf3a 100644
--- a/cross-scripts/zlib
+++ b/cross-scripts/zlib
@@ -12,13 +12,13 @@ unpack() {
 
 build() {
 	pushd src/zlib-1.2.8
-	CC=musl-gcc ./configure --prefix=$top/cross --static
-	make CC=musl-gcc -j$nprocs
+	CC=musl-gcc ./configure --prefix=$top/cross --static || return 1
+	make CC=musl-gcc -j$nprocs || return 1
 	popd
 }
 
 install() {
 	pushd src/zlib-1.2.8
-	make install
+	make install || return 1
 	popd
 }
diff --git a/pkgs/dropbear b/pkgs/dropbear
index 3cce5c3..4d87395 100644
--- a/pkgs/dropbear
+++ b/pkgs/dropbear
@@ -13,19 +13,19 @@ unpack() {
 build() {
 	pushd src/dropbear-2013.56
 	CC=musl-gcc ./configure CFLAGS="-I$top/cross/include" \
-		LDFLAGS="-static -L$top/cross/lib" --prefix=$root
+		LDFLAGS="-static -L$top/cross/lib" --prefix=$root || return 1
 	for i in UTMP WTMP PUTUTLINE PUTUTXLINE SYSLOG LASTLOG; do
 		echo "#define DISABLE_$i" >> config.h
 	done
 	make CC=musl-gcc SCPPROGRESS=1 PROGRAMS="dropbear dbclient scp dropbearkey" \
-		prefix=$root sbindir=$root/bin -j$nprocs STATIC=1
+		prefix=$root sbindir=$root/bin -j$nprocs STATIC=1 || return 1
 	popd
 }
 
 install() {
 	pushd src/dropbear-2013.56
 	make CC=musl-gcc SCPPROGRESS=1 PROGRAMS="dropbear dbclient scp dropbearkey" prefix=$root \
-		sbindir=$root/bin -j$nprocs install STATIC=1
+		sbindir=$root/bin -j$nprocs install STATIC=1 || return 1
 	pushd $root/bin
 	ln -s dbclient ssh
 	popd
diff --git a/pkgs/em b/pkgs/em
index fe008e9..d6ae081 100644
--- a/pkgs/em
+++ b/pkgs/em
@@ -13,15 +13,15 @@ unpack() {
 build() {
 	pushd src/em
 	make clean
-	sed -i "s@BINDIR=/usr/bin@BINDIR=${root}/bin@;s@LIBDIR=/usr/lib@LIBDIR=${root}/share/doc/uemacs@" Makefile
+	sed -i "s@BINDIR=/usr/bin@BINDIR=${root}/bin@;s@LIBDIR=/usr/lib@LIBDIR=${root}/share/doc/uemacs@" Makefile || return 1
 	make -j$nprocs CC="musl-gcc -I$top/cross/include -I$top/cross/include/ncurses" \
-		LDFLAGS="-static -L$top/cross/lib"
+		LDFLAGS="-static -L$top/cross/lib" || return 1
 	popd
 }
 
 install() {
 	pushd src/em
 	mkdir -p $root/share/doc/uemacs
-	make install
+	make install || return 1
 	popd
 }
diff --git a/pkgs/make b/pkgs/make
index c89583d..878da69 100644
--- a/pkgs/make
+++ b/pkgs/make
@@ -12,13 +12,13 @@ unpack() {
 
 build() {
 	pushd src/make-3.82
-	CC="musl-gcc -static" ./configure --prefix=$root --disable-nls
-	make CC="musl-gcc -static" -j$nprocs
+	CC="musl-gcc -static" ./configure --prefix=$root --disable-nls || return 1
+	make CC="musl-gcc -static" -j$nprocs || return 1
 	popd
 }
 
 install() {
 	pushd src/make-3.82
-	make install
+	make install || return 1
 	popd
 }
diff --git a/pkgs/man b/pkgs/man
index 8338193..f41ae77 100644
--- a/pkgs/man
+++ b/pkgs/man
@@ -12,7 +12,7 @@ unpack() {
 
 build() {
 	pushd src/man
-	musl-gcc -std=gnu99 -o man man.c -static
+	musl-gcc -std=gnu99 -o man man.c -static || return 1
 	popd
 }
 
diff --git a/pkgs/mksh-R47 b/pkgs/mksh-R47
index 6a87f57..11b0ef4 100644
--- a/pkgs/mksh-R47
+++ b/pkgs/mksh-R47
@@ -12,7 +12,7 @@ unpack() {
 
 build() {
 	pushd src/mksh
-	CC=musl-gcc LDFLAGS+=-static sh Build.sh
+	CC=musl-gcc LDFLAGS+=-static sh Build.sh || return 1
 	popd
 }
 
diff --git a/pkgs/rsync b/pkgs/rsync
index d3b2dea..cf87fbf 100644
--- a/pkgs/rsync
+++ b/pkgs/rsync
@@ -12,13 +12,13 @@ unpack() {
 
 build() {
 	pushd src/rsync-3.0.9
-	CC=musl-gcc ./configure --prefix=$root LDFLAGS="-static"
-	make CC=musl-gcc -j$nprocs
+	CC=musl-gcc ./configure --prefix=$root LDFLAGS="-static" || return 1
+	make CC=musl-gcc -j$nprocs || return 1
 	popd
 }
 
 install() {
 	pushd src/rsync-3.0.9
-	make install
+	make install || return 1
 	popd
 }
diff --git a/pkgs/sbase b/pkgs/sbase
index 9f20c10..eeee20d 100644
--- a/pkgs/sbase
+++ b/pkgs/sbase
@@ -7,7 +7,7 @@ fetch() {
 build() {
 	pushd src/sbase
 	make clean
-	make -j$nprocs CC=musl-gcc LDFLAGS=-static
+	make -j$nprocs CC=musl-gcc LDFLAGS=-static || return 1
 	popd
 }
 
diff --git a/pkgs/sdhcp b/pkgs/sdhcp
index bc2cf1d..538bb2f 100644
--- a/pkgs/sdhcp
+++ b/pkgs/sdhcp
@@ -13,10 +13,10 @@ unpack() {
 build() {
 	pushd src/sdhcp
 	make clean
-	make CC=musl-gcc LDFLAGS=-static
+	make CC=musl-gcc LDFLAGS=-static || return 1
 	popd
 }
 
 install() {
-	cp src/sdhcp/sdhcp $root/bin
+	cp src/sdhcp/sdhcp $root/bin || return 1
 }
diff --git a/pkgs/sic b/pkgs/sic
index c747656..c442024 100644
--- a/pkgs/sic
+++ b/pkgs/sic
@@ -13,7 +13,7 @@ unpack() {
 build() {
 	pushd src/sic
 	make clean
-	make CC=musl-gcc LDFLAGS=-static
+	make CC=musl-gcc LDFLAGS=-static || return 1
 	popd
 }
 
diff --git a/pkgs/smdev b/pkgs/smdev
index 528b564..fdb28c1 100644
--- a/pkgs/smdev
+++ b/pkgs/smdev
@@ -7,12 +7,12 @@ fetch() {
 build() {
 	pushd src/smdev
 	make clean
-	make CC=musl-gcc LDFLAGS=-static
+	make CC=musl-gcc LDFLAGS=-static || return 1
 	popd
 }
 
 install() {
 	pushd src/smdev
-	make PREFIX=$root install
+	make PREFIX=$root install || return 1
 	popd
 }
diff --git a/pkgs/tmux b/pkgs/tmux
index 8da3bb3..f52a0a7 100644
--- a/pkgs/tmux
+++ b/pkgs/tmux
@@ -14,13 +14,13 @@ build() {
 	pushd src/tmux-1.8
 	CC=musl-gcc ./configure --prefix=$root \
 		CFLAGS="-I$top/cross/include -I$top/cross/include/ncurses" \
-		LDFLAGS="-static -L$top/cross/lib"
-	make CC=musl-gcc -j$nprocs
+		LDFLAGS="-static -L$top/cross/lib" || return 1
+	make CC=musl-gcc -j$nprocs || return 1
 	popd
 }
 
 install() {
 	pushd src/tmux-1.8
-	make install
+	make install || return 1
 	popd
 }
diff --git a/pkgs/ubase b/pkgs/ubase
index cbc8d89..c209e74 100644
--- a/pkgs/ubase
+++ b/pkgs/ubase
@@ -7,7 +7,7 @@ fetch() {
 build() {
 	pushd src/ubase
 	make clean
-	make -j$nprocs CC=musl-gcc LDFLAGS=-static
+	make -j$nprocs CC=musl-gcc LDFLAGS=-static || return 1
 	popd
 }