scripts: remove . from $PATH

Add CT_SanitizePath function which removes entries referring to ., /tmp
and non-existing directories from $PATH, and call it early in the
build script.

If . is in PATH, gcc-4.4.4 build breaks:

[ALL  ]    checking what assembler to use...
[ALL  ]    config.status: creating as

i.e. "as" is supposed to be the arm-unknown-linux-uclibcgnueabi cross assembler,
but config.status creates a local "as" script which is calling the
host assembler.

Signed-off-by: Johannes Stezenbach <>
[Yann E. MORIN: style fixes + explanations]
Signed-off-by: "Yann E. MORIN" <>
(transplanted from 20dd8cef1c8adff0aa3e78ae6d7acfbc45ed5a83)
Johannes Stezenbach 13 years ago
parent be34032551
commit 264bcd36c1

@ -28,6 +28,9 @@
# Overide the locale early, in case we ever translate crosstool-NG messages
[ -z "${CT_NO_OVERIDE_LC_MESSAGES}" ] && export LC_ALL=C
# remove . from PATH since it can cause gcc build failures
# Some sanity checks in the environment and needed tools
CT_DoLog INFO "Performing some trivial sanity checks"
CT_TestAndAbort "Don't set LD_LIBRARY_PATH. It screws up the build." -n "${LD_LIBRARY_PATH}"

@ -137,6 +137,24 @@ CT_DoEnd()
CT_DoLog ${level:-INFO} "(elapsed: ${elapsed_min}:${elapsed_sec}.${elapsed_csec})"
# Remove entries referring to ., /tmp and non-existing directories from $PATH
# Usage: CT_SanitizePath
CT_SanitizePath() {
local new
local tmp
local IFS=:
for p in $PATH; do
# Replace any occurence of . with $(pwd -P)
# Use /tmp as a default if the directory is non-existent
# Do not add /tmp in the PATH
tmp="$( cd /tmp; cd "${p}" 2>/dev/null || true; pwd -P )"
if [ "${tmp}" != "/tmp" ]; then
# Abort the execution with an error message
# Usage: CT_Abort <message>
CT_Abort() {