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build: keep TARGET out of Buildroot's environment #2795

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Merged
openipc-ai merged 1 commit into from
Nov 8, 2026
Merged

build: keep TARGET out of Buildroot's environment #2795

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9 changes: 9 additions & 0 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,15 @@ BR_LINK = https://github.com/buildroot/buildroot/archive
BR_FILE = /tmp/buildroot-$(BR_VER).tar.gz
BR_CONF = $(TARGET)/openipc_defconfig
TARGET ?= $(PWD)/output
# TARGET is this Makefile's name for the output directory, and it stops here. A
# variable given on the make command line is exported to every recipe and handed
# to sub-makes through MAKEFLAGS, so `make TARGET=...` used to reach Buildroot and
# every package's configure. host-libffi's AX_ENABLE_BUILDDIR takes $TARGET as a
# build subdirectory, then re-runs ../../configure from it and fails (#2794).
# Buildroot is told where to build by O=$(TARGET); the one sub-make of this file
# that needs TARGET, repack-final's, passes it explicitly.
MAKEOVERRIDES := $(filter-out TARGET=%,$(MAKEOVERRIDES))
unexport TARGET
export CMAKE_POLICY_VERSION_MINIMUM := 3.5

# GCC 15 defaults to -std=gnu23, where an empty parameter list means "takes no
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