This series fixes a dtc build failure on long source paths and cleans
up the now-dead GNU Make 3.x compatibility code in the top-level
Makefile.
Patch 1 fixes a build failure where a long $(srctree) makes the
HOSTCC/CPP command line for cmd_dtc/cmd_dtco exceed the shell's
argument limit, by writing dtc_cpp_flags to a response file and
passing @file instead. This relies on the $(file ...) function,
which requires GNU Make >= 4.0.
Patch 2 raises the enforced minimum GNU Make version to 4.0, adding
an explicit "GNU Make >= 4.0 is required" check to the top-level
Makefile and dropping the now-dead GNU Make 3.x compatibility
branches.
Azure CI was run for patch 2/2. The macOS host-tools job
("Ensure host tools build for macOS X") and the rest of the pipeline
completed successfully: https://github.com/u-boot/u-boot/pull/1048
Changes in v2:
- 1/2: add Reviewed-by tag.
- 2/2: drop the Fixes tag.
Suraj Kakade (2):
scripts: pass dtc cpp flags via a GCC response file
Makefile: drop GNU Make < 4.0 compatibility code
Makefile | 20 +++++---------------
scripts/Makefile.lib | 7 +++++--
2 files changed, 10 insertions(+), 17 deletions(-)
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2.43.7
