MAKE: Fix test errors.

configure.ac

@@ -205,7 +205,7 @@ AC_ARG_WITH(vcpkg-target-triplet,
          If left blank, will try to determine the triplet
       ]
    ), [  # given
-   if test "x$with_vcpkg" != "xno" -a test "x$withval" != "xno"; then
+   if test "x$with_vcpkg" != "xno" && test "x$withval" != "xno"; then
       vcpkg_triplet=$withval
    fi
    ],[  # not given
@@ -263,7 +263,7 @@ AC_ARG_WITH(vcpkg-host-triplet,
          If left blank, will try to determine the triplet
       ]
    ), [  # given
-   if test "x$with_vcpkg" != "xno" -a test "x$withval" != "xno"; then
+   if test "x$with_vcpkg" != "xno" && test "x$withval" != "xno"; then
       VCPKG_INSTALL_ARGUMENTS=$VCPKG_INSTALL_ARGUMENTS"--host-triplet=$withval "
    fi
    ],
@@ -390,10 +390,7 @@ if test "x$enable_lsp" != "xno" -a "x$enable_threads" != "xno"; then
    LSP_CMAKE_OPTIONS="-DLSPCPP_USE_CPP17=ON "
 
    if test "x$ac_cv_use_gc" != "xno"; then
-      LSP_CMAKE_OPTIONS=$LSP_CMAKE_OPTIONS"-DLSPCPP_SUPPORT_BOEHM_GC=ON "
-      if test "x$with_vcpkg" = "xno" -a test "x$ac_cv_use_gc" != "xsystem"; then
-          LSP_CMAKE_OPTIONS=$LSP_CMAKE_OPTIONS"-DLSPCPP_GC_DOWNLOADED_ROOT=$ROOT_DIR_RELATIVE_TO_SRC/\$(GC) "
-      fi
+      LSP_CMAKE_OPTIONS=$LSP_CMAKE_OPTIONS"-DLSPCPP_SUPPORT_BOEHM_GC=ON -DLSPCPP_GC_DOWNLOADED_ROOT=$ROOT_DIR_RELATIVE_TO_SRC/\$(GC)"
    fi
 
    AC_DEFUN(ENABLE_LSP_MACRO,