bash: prevent aliasing of libc's 'getenv'

By default, bash brings its own version of 'getenv', named exactly like
the libc function. This becomes a problem in fork/execve scenarios if
the dynamic linker resolves 'getenv' to the bash binary instead of the
libc.

This patch fixes the generate step of the genodians.org scenario.

Issue #3882

repos/ports/src/noux-pkg/bash/target.inc

@@ -1,4 +1,12 @@
 CONFIGURE_ARGS = --without-bash-malloc
+
+#
+# Avoid aliasing with the libc 'getenv' to prevent the dynamic linker from
+# resolving libc-internal references to the bash binary, which causes
+# trouble for fork/execve.
+#
+CONFIGURE_ARGS += bash_cv_getenv_redef=no
+
 CFLAGS += -Dsh_xfree=free
 
 #