diff --git a/mac_build/buildMacBOINC-CI.sh b/mac_build/buildMacBOINC-CI.sh
index 923b6f0c2b..75d2450310 100755
--- a/mac_build/buildMacBOINC-CI.sh
+++ b/mac_build/buildMacBOINC-CI.sh
@@ -140,6 +140,9 @@ if [ $retval -ne 0 ]; then cd ..; exit 1; fi
 #source BuildMacBOINC.sh ${config} -noclean -target ss_app -setting HEADER_SEARCH_PATHS "../api/ ../samples/jpeglib/ ${cache_dir}/include ${cache_dir}/include/freetype2"  -setting LIBRARY_SEARCH_PATHS "${libSearchPath} ${cache_dir}/lib" | $beautifier; retval=${PIPESTATUS[0]}
 #if [ $retval -ne 0 ]; then cd ..; exit 1; fi
 
+source BuildMacBOINC.sh ${config} -noclean -target ScreenSaver -setting GCC_ENABLE_OBJC_GC "unsupported" | $beautifier; retval=${PIPESTATUS[0]}
+if [ $retval -ne 0 ]; then cd ..; exit 1; fi
+
 source BuildMacBOINC.sh ${config} -noclean -target boinc_opencl | $beautifier; retval=${PIPESTATUS[0]}
 if [ $retval -ne 0 ]; then cd ..; exit 1; fi
 
diff --git a/mac_build/buildc-ares.sh b/mac_build/buildc-ares.sh
index 4c5109016b..2a233909bc 100644
--- a/mac_build/buildc-ares.sh
+++ b/mac_build/buildc-ares.sh
@@ -46,7 +46,7 @@
 
 doclean=""
 lprefix="/tmp/installed-c-ares"
-libPath="lib/.libs"
+libPath=".libs"
 while [[ $# -gt 0 ]]; do
     key="$1"
     case $key in
diff --git a/mac_build/buildcurl.sh b/mac_build/buildcurl.sh
index fedd601128..e5a6f48ce1 100644
--- a/mac_build/buildcurl.sh
+++ b/mac_build/buildcurl.sh
@@ -82,7 +82,7 @@ fi
 
 doclean=""
 lprefix=""
-libPath=".libs"
+libPath="libs/.libs"
 libcares="/tmp/installed-c-ares"
 while [[ $# -gt 0 ]]; do
     key="$1"
@@ -163,6 +163,7 @@ else
     # curl configure and make expect a path to _installed_ c-ares-1.11.0
     # so we temporarily installed c-ares at a path that does not contain spaces.
     # buildc-ares.sh installed c-ares to /tmp/installed-c-ares
+    # and configured c-ares with prefix=/tmp/installed-c-ares
     if [ ! -f "${libcares}/libcares.a" ]; then
         cd ../c-ares-1.11.0 || return 1
         make install
diff --git a/mac_build/buildfreetype.sh b/mac_build/buildfreetype.sh
index ffd7ea3a94..fd484ce9b3 100644
--- a/mac_build/buildfreetype.sh
+++ b/mac_build/buildfreetype.sh
@@ -129,14 +129,16 @@ rm -fR objs/*.*
 rm -fR objs/*
 cp -p README-objs objs/README
 rm -f README-objs
+# this directory is only used when no --prefix argument was given
 rm -fR "../freetype_install/"
 
+./configure --enable-shared=NO --prefix=${lprefix} --host=i386
+if [ $? -ne 0 ]; then return 1; fi
+
 if [ "${doclean}" = "yes" ]; then
     make clean
 fi
 
-./configure --enable-shared=NO --prefix=${lprefix} --host=i386
-if [ $? -ne 0 ]; then return 1; fi
 make 1>/dev/null
 if [ $? -ne 0 ]; then return 1; fi
 
@@ -172,7 +174,9 @@ make install 1>/dev/null
 if [ $? -ne 0 ]; then return 1; fi
 
 # remove installed items not needed by ftgl build
-rm -fR "${lprefix}/share"
+# this directory is only used when no --prefix argument was given
+rm -fR "../freetype_install/share"
+rm -fR "../freetype_install/lib"
 
 lprefix=""
 export CC="";export CXX=""