diff --git a/buildsys.mk.in b/buildsys.mk.in
index 68fabb1..e56eb05 100644
--- a/buildsys.mk.in
+++ b/buildsys.mk.in
@@ -364,7 +364,7 @@ install: ${LIB} ${STATIC_LIB} ${PLUGIN} ${PROG} install-extra
 
 	for i in ${LIB}; do \
 		${INSTALL_STATUS}; \
-		if ${MKDIR_P} ${DESTDIR}${libdir} && ${INSTALL_LIB}; then \
+		if ${MKDIR_P} ${DESTDIR}${libdir} ${INSTALL_LIB}; then \
 			${INSTALL_OK}; \
 		else \
 			${INSTALL_FAILED}; \
@@ -445,7 +445,7 @@ uninstall: uninstall-extra
 
 	for i in ${LIB}; do \
 		if test -f ${DESTDIR}${libdir}/$$i; then \
-			if ${UNINSTALL_LIB}; then \
+			if : ${UNINSTALL_LIB}; then \
 				${DELETE_OK}; \
 			else \
 				${DELETE_FAILED}; \
diff --git a/m4/buildsys.m4 b/m4/buildsys.m4
index 61dd330..a742bb8 100644
--- a/m4/buildsys.m4
+++ b/m4/buildsys.m4
@@ -101,8 +101,8 @@ AC_DEFUN([BUILDSYS_SHARED_LIB], [
 			PLUGIN_CFLAGS='-fPIC -DPIC'
 			PLUGIN_LDFLAGS='-bundle -undefined dynamic_lookup'
 			PLUGIN_SUFFIX='.impl'
-			INSTALL_LIB='${INSTALL} -m 755 $$i ${DESTDIR}${libdir}/$${i%.dylib}.${LIB_MAJOR}.${LIB_MINOR}.dylib && ${LN_S} -f $${i%.dylib}.${LIB_MAJOR}.${LIB_MINOR}.dylib ${DESTDIR}${libdir}/$${i%.dylib}.${LIB_MAJOR}.dylib && ${LN_S} -f $${i%.dylib}.${LIB_MAJOR}.${LIB_MINOR}.dylib ${DESTDIR}${libdir}/$$i'
-			UNINSTALL_LIB='rm -f ${DESTDIR}${libdir}/$$i ${DESTDIR}${libdir}/$${i%.dylib}.${LIB_MAJOR}.dylib ${DESTDIR}${libdir}/$${i%.dylib}.${LIB_MAJOR}.${LIB_MINOR}.dylib'
+			INSTALL_LIB='&& ${INSTALL} -m 755 $$i ${DESTDIR}${libdir}/$${i%.dylib}.${LIB_MAJOR}.${LIB_MINOR}.dylib && ${LN_S} -f $${i%.dylib}.${LIB_MAJOR}.${LIB_MINOR}.dylib ${DESTDIR}${libdir}/$${i%.dylib}.${LIB_MAJOR}.dylib && ${LN_S} -f $${i%.dylib}.${LIB_MAJOR}.${LIB_MINOR}.dylib ${DESTDIR}${libdir}/$$i'
+			UNINSTALL_LIB='&& rm -f ${DESTDIR}${libdir}/$$i ${DESTDIR}${libdir}/$${i%.dylib}.${LIB_MAJOR}.dylib ${DESTDIR}${libdir}/$${i%.dylib}.${LIB_MAJOR}.${LIB_MINOR}.dylib'
 			CLEAN_LIB=''
 			;;
 		solaris*)
@@ -115,8 +115,8 @@ AC_DEFUN([BUILDSYS_SHARED_LIB], [
 			PLUGIN_CFLAGS='-fPIC -DPIC'
 			PLUGIN_LDFLAGS='-shared'
 			PLUGIN_SUFFIX='.so'
-			INSTALL_LIB='${INSTALL} -m 755 $$i ${DESTDIR}${libdir}/$$i.${LIB_MAJOR}.${LIB_MINOR} && rm -f ${DESTDIR}${libdir}/$$i && ${LN_S} $$i.${LIB_MAJOR}.${LIB_MINOR} ${DESTDIR}${libdir}/$$i'
-			UNINSTALL_LIB='rm -f ${DESTDIR}${libdir}/$$i ${DESTDIR}${libdir}/$$i.${LIB_MAJOR}.${LIB_MINOR}'
+			INSTALL_LIB='&& ${INSTALL} -m 755 $$i ${DESTDIR}${libdir}/$$i.${LIB_MAJOR}.${LIB_MINOR} && rm -f ${DESTDIR}${libdir}/$$i && ${LN_S} $$i.${LIB_MAJOR}.${LIB_MINOR} ${DESTDIR}${libdir}/$$i'
+			UNINSTALL_LIB='&& rm -f ${DESTDIR}${libdir}/$$i ${DESTDIR}${libdir}/$$i.${LIB_MAJOR}.${LIB_MINOR}'
 			CLEAN_LIB=''
 			;;
 		openbsd* | mirbsd*)
@@ -129,8 +129,8 @@ AC_DEFUN([BUILDSYS_SHARED_LIB], [
 			PLUGIN_CFLAGS='-fPIC -DPIC'
 			PLUGIN_LDFLAGS='-shared'
 			PLUGIN_SUFFIX='.so'
-			INSTALL_LIB='${INSTALL} -m 755 $$i ${DESTDIR}${libdir}/$$i'
-			UNINSTALL_LIB='rm -f ${DESTDIR}${libdir}/$$i'
+			INSTALL_LIB='&& ${INSTALL} -m 755 $$i ${DESTDIR}${libdir}/$$i'
+			UNINSTALL_LIB='&& rm -f ${DESTDIR}${libdir}/$$i'
 			CLEAN_LIB=''
 			;;
 		cygwin* | mingw*)
@@ -143,8 +143,8 @@ AC_DEFUN([BUILDSYS_SHARED_LIB], [
 			PLUGIN_CFLAGS=''
 			PLUGIN_LDFLAGS='-shared'
 			PLUGIN_SUFFIX='.dll'
-			INSTALL_LIB='${MKDIR_P} ${DESTDIR}${bindir} && ${INSTALL} -m 755 $$i ${DESTDIR}${bindir}/$$i && ${INSTALL} -m 755 $$i.a ${DESTDIR}${libdir}/$$i.a'
-			UNINSTALL_LIB='rm -f ${DESTDIR}${bindir}/$$i ${DESTDIR}${libdir}/$$i.a'
+			INSTALL_LIB='&& ${MKDIR_P} ${DESTDIR}${bindir} && ${INSTALL} -m 755 $$i ${DESTDIR}${bindir}/$$i && ${INSTALL} -m 755 $$i.a ${DESTDIR}${libdir}/$$i.a'
+			UNINSTALL_LIB='&& rm -f ${DESTDIR}${bindir}/$$i ${DESTDIR}${libdir}/$$i.a'
 			CLEAN_LIB='${LIB}.a'
 			;;
 		*)
@@ -157,8 +157,8 @@ AC_DEFUN([BUILDSYS_SHARED_LIB], [
 			PLUGIN_CFLAGS='-fPIC -DPIC'
 			PLUGIN_LDFLAGS='-shared'
 			PLUGIN_SUFFIX='.so'
-			INSTALL_LIB='${INSTALL} -m 755 $$i ${DESTDIR}${libdir}/$$i.${LIB_MAJOR}.${LIB_MINOR}.0 && ${LN_S} -f $$i.${LIB_MAJOR}.${LIB_MINOR}.0 ${DESTDIR}${libdir}/$$i.${LIB_MAJOR} && ${LN_S} -f $$i.${LIB_MAJOR}.${LIB_MINOR}.0 ${DESTDIR}${libdir}/$$i'
-			UNINSTALL_LIB='rm -f ${DESTDIR}${libdir}/$$i ${DESTDIR}${libdir}/$$i.${LIB_MAJOR} ${DESTDIR}${libdir}/$$i.${LIB_MAJOR}.${LIB_MINOR}.0'
+			INSTALL_LIB='&& ${INSTALL} -m 755 $$i ${DESTDIR}${libdir}/$$i.${LIB_MAJOR}.${LIB_MINOR}.0 && ${LN_S} -f $$i.${LIB_MAJOR}.${LIB_MINOR}.0 ${DESTDIR}${libdir}/$$i.${LIB_MAJOR} && ${LN_S} -f $$i.${LIB_MAJOR}.${LIB_MINOR}.0 ${DESTDIR}${libdir}/$$i'
+			UNINSTALL_LIB='&& rm -f ${DESTDIR}${libdir}/$$i ${DESTDIR}${libdir}/$$i.${LIB_MAJOR} ${DESTDIR}${libdir}/$$i.${LIB_MAJOR}.${LIB_MINOR}.0'
 			CLEAN_LIB=''
 			;;
 	esac