diff --git a/Jenkinsfile b/Jenkinsfile
index 99ec264..32f3630 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -24,7 +24,7 @@ pipeline {
 
                     parallel implementations.collectEntries { implementation ->
                         [(implementation): {
-                                stage("${implementation} snow-chibi install") {
+                                stage("${implementation} test install") {
                                     catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
                                         if("${implementation}" == "chicken") {
                                             DOCKERIMG="chicken:5"
@@ -32,7 +32,7 @@ pipeline {
                                             DOCKERIMG="${implementation}:head"
                                         }
                                         sh "docker build --build-arg IMAGE=${DOCKERIMG} --build-arg SCHEME=${implementation} --tag=foreign-c-test-${implementation} -f dockerfiles/Dockerfile.snow-chibi-install-test ."
-                                            sh "docker run -v ${WORKSPACE}:/workdir -w /workdir -t foreign-c-test-${implementation} sh -c \"timeout 120 make SCHEME=${implementation} clean force-install && cp tests/hello.scm /tmp/ && cd /tmp && SCHEME=${implementation} printf \"\\n\" | timeout 120 compile-r7rs -o hello hello.scm && printf \"\\n\" | timeout 120 ./hello\""
+                                            sh "docker run -v ${WORKSPACE}:/workdir -w /workdir -t foreign-c-test-${implementation} sh -c \"timeout 120 make SCHEME=${implementation} clean force-install && cp tests/hello.scm /tmp/ && cd /tmp && COMPILE_R7RS=${implementation} printf \"\\n\" | timeout 120 compile-r7rs -o hello hello.scm && printf \"\\n\" | timeout 120 ./hello\""
                                     }
                                 }
                                 tests.each { test ->
diff --git a/Makefile b/Makefile
index 88e3d8f..707a375 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,6 @@ endif
 all: build ${TMPDIR}
 
 build: README.html
-	make ${SCHEME}
 	snow-chibi package \
 		--version=${VERSION} \
 		--authors="Retropikzel" \
@@ -30,7 +29,9 @@ build: README.html
 
 install:
 	if [ "${SCHEME}" = "gauche" ]; then \
-		cp -r foreign $(shell gauche-config --sitelibdir)/; \
+		cp -r foreign $(shell gauche-config --syslibdir)/; \
+		mkdir -p $(shell gauche-config --sysarchdir)/foreign/c/lib; \
+		cp -r foreign/c/lib/gauche.so $(shell gauche-config --sysarchdir)/foreign/c/lib/; \
 	else \
 		snow-chibi --impls=${SCHEME} install foreign-c-${VERSION}.tgz; \
 	fi
@@ -39,7 +40,11 @@ uninstall:
 	snow-chibi --impls=${SCHEME} remove foreign.c
 
 force-install:
-	printf "\n" | snow-chibi --impls=${SCHEME} --always-yes install foreign-c-${VERSION}.tgz
+	if [ "${SCHEME}" = "gauche" ]; then \
+		cp -r foreign $(shell gauche-config --sitelibdir)/; \
+	else \
+		printf "\n" | snow-chibi --impls=${SCHEME} --always-yes install foreign-c-${VERSION}.tgz; \
+	fi
 
 test-java: ${TMPDIR}/test/libtest.o ${TMPDIR}/test/libtest.so ${TMPDIR}/test/libtest.a
 	mkdir -p ${TMPDIR}/test
@@ -93,11 +98,13 @@ test-compile-r7rs-wine:
 
 test-docker:
 	docker build --build-arg IMAGE=${DOCKERIMG} --build-arg SCHEME=${SCHEME} --tag=foreign-c-test-${SCHEME} -f dockerfiles/Dockerfile.test .
-	docker run -it -v "${PWD}:/workdir" -w /workdir -t foreign-c-test-${SCHEME} sh -c "make SCHEME=${SCHEME} TEST=${TEST} test"
+	docker run -it -v "${PWD}:/workdir" -w /workdir -t foreign-c-test-${SCHEME} sh \
+		-c "make SCHEME=${SCHEME} TEST=${TEST} test"
 
-test-snow-install-docker:
+test-install-docker:
 	docker build --build-arg IMAGE=${DOCKERIMG} --build-arg SCHEME=${SCHEME} --tag=foreign-c-test-${SCHEME} -f dockerfiles/Dockerfile.snow-chibi-install-test .
-	docker run -it -v "${PWD}:/workdir" -w /workdir -t foreign-c-test-${SCHEME} sh -c "make SCHEME=${SCHEME} TEST=${TEST} all install"
+	docker run -it -v "${PWD}:/workdir" -w /workdir -t foreign-c-test-${SCHEME} sh \
+		-c "make SCHEME=${SCHEME} clean ${SCHEME} install && cp tests/hello.scm /tmp/ && cd /tmp && COMPILE_R7RS=${SCHEME} compile-r7rs -o hello hello.scm && ./hello"
 
 ${TMPDIR}/test/libtest.o: tests/c-src/libtest.c
 	mkdir -p ${TMPDIR}/test
diff --git a/dockerfiles/Dockerfile.snow-chibi-install-test b/dockerfiles/Dockerfile.snow-chibi-install-test
index d9b7008..6c436d1 100644
--- a/dockerfiles/Dockerfile.snow-chibi-install-test
+++ b/dockerfiles/Dockerfile.snow-chibi-install-test
@@ -6,7 +6,9 @@ RUN apt-get update && apt-get install -y \
     git \
     make \
     libffi-dev \
-    pandoc
+    pandoc \
+    tree
+RUN mkdir -p ${HOME}/.snow && echo "()" > ${HOME}/.snow/config.scm
 COPY --from=retropikzel1/compile-r7rs /opt/compile-r7rs /opt/compile-r7rs
 ENV PATH=/opt/compile-r7rs/bin:${PATH}
 ARG SCHEME=chibi
diff --git a/dockerfiles/Dockerfile.test b/dockerfiles/Dockerfile.test
index f737d68..a6af8db 100644
--- a/dockerfiles/Dockerfile.test
+++ b/dockerfiles/Dockerfile.test
@@ -10,7 +10,8 @@ RUN apt-get update && apt-get install \
     make \
     libffi-dev \
     pandoc \
-    libmbedtls-dev
+    libmbedtls-dev \
+    tree
 RUN mkdir -p ${HOME}/.snow && echo "()" > ${HOME}/.snow/config.scm
 COPY --from=retropikzel1/compile-r7rs /opt/compile-r7rs /opt/compile-r7rs
 ENV PATH=/opt/compile-r7rs/bin:${PATH}