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python3: error on host python path too long

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Error if shebang to host python interpreter would exceed 127 characters
(124 characters plus shebang and newline). This is used to alert user
when python-installer would fail to correctly set a Python program's
shebang line.

Closes: https://github.com/openwrt/packages/issues/28310

Signed-off-by: Daniel F. Dickinson <dfdpublic@wildtechgarden.ca>
This commit is contained in:
Daniel F. Dickinson
2026-01-11 01:46:02 -05:00
committed by Alexandru Ardelean
parent 6fb5253863
commit 4cb00fd5fb
1 changed files with 18 additions and 0 deletions
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18
lang/python/python3-package.mk
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@@ -22,6 +22,23 @@ PYTHON3PATH:=$(PYTHON3_LIB_DIR):$(STAGING_DIR)/$(PYTHON3_PKG_DIR):$(PKG_INSTALL_
-include $(PYTHON3_LIB_DIR)/openwrt/Makefile-vars
# Error if shebang to host python interpreter would exceed 127 characters
# (124 characters plus shebang and newline)
# This is used to alert user when python-installer would fail to correctly
# set a Python program's shebang line.
# See https://github.com/openwrt/packages/issues/28310
PYTHON3_PKG_HOST_BIN_MAX_PATH_LEN:=124
define CheckHostPythonShebang
set -e; \
HOST_PYTHON3_BIN="$(HOST_PYTHON3_BIN)"; \
if \
[ $$$${#HOST_PYTHON3_BIN} -gt $(PYTHON3_PKG_HOST_BIN_MAX_PATH_LEN) ]; then \
echo >&2 "Path to host python too long; python program install would fail";\
exit 1; \
fi
endef
# These configure args are needed in detection of path to Python header files
# using autotools.
CONFIGURE_ARGS += \
@@ -264,6 +281,7 @@ define Py3Build/Compile/Default
endef
define Py3Build/Install/Default
$(call CheckHostPythonShebang)
$(call Python3/Run, \
$(PKG_BUILD_DIR), \
-m installer \