diff --git a/tools/config/configure.R b/tools/config/configure.R
index 6293fe1..2f84337 100644
--- a/tools/config/configure.R
+++ b/tools/config/configure.R
@@ -186,12 +186,23 @@ define(
 )
 
 # set PKG_LIBS
+#
+# bincraft patch: the library directories below are passed as plain '-L', not
+# '-Wl,-L'. gcc expands its own search dirs (/usr/lib64, /usr/lib/<triplet>)
+# into explicit '-L' options ahead of anything forwarded verbatim with '-Wl,',
+# so with '-Wl,-L' a system libtbb.so wins over the one named here: on a build
+# host with a distro TBB installed, '-ltbb' resolves to that library and
+# RcppParallel.so records its SONAME (libtbb.so.12, or libtbb.so.2 for the
+# classic Intel TBB) instead of the bundled 'libtbb.so'. The binary then loads
+# the system TBB rather than the copy shipped in RcppParallel/lib, and fails
+# outright on a machine that has no system TBB. gcc places a plain '-L' before
+# its built-in dirs, so the intended library is found first.
 pkgLibs <- if (!is.na(tbbLib)) {
 
    # a TBB supplied via TBB_LIB / TBB_ROOT. an rpath is meaningless on Windows,
    # where the loader has no equivalent -- see R/zzz.R for how we resolve there
    c(
-      "-Wl,-L\"$(TBB_LIB)\"",
+      "-L\"$(TBB_LIB)\"",
       if (.Platform$OS.type != "windows")
          sprintf("-Wl,-rpath,%s", shQuote(tbbLib)),
       "-l$(TBB_NAME)",
@@ -201,14 +212,14 @@ pkgLibs <- if (!is.na(tbbLib)) {
 } else if (R.version$os == "emscripten") {
 
    c(
-      "-Wl,-Ltbb/build/lib_release",
+      "-Ltbb/build/lib_release",
       "-l$(TBB_NAME)"
    )
 
 } else {
 
    c(
-      "-Wl,-Ltbb/build/lib_release",
+      "-Ltbb/build/lib_release",
       "-l$(TBB_NAME)",
       "-l$(TBB_MALLOC_NAME)"
    )