32 lines
1.4 KiB
Diff
32 lines
1.4 KiB
Diff
From: Ben Hutchings <benh@debian.org>
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Date: Thu, 15 Sep 2022 02:14:03 +0200
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Subject: Makefile: Make compiler version comparison optional
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Forwarded: not-needed
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Bug-Debian: https://bugs.debian.org/1019749
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The top-level Makefile warns if the compiler version string changes at
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all between the kernel build and an out-of-tree module build.
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We expect that major compiler version changes could introduce ABI
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changes, and override the CC variable in out-of-tree module builds to
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ensure that the same major compiler version is used. But minor
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version changes should not make a difference, so this exact version
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comparison produces false warnings.
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Since custom kernel packages don't have that, don't remove the version
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comparison. Instead, skip it if $(DEBIAN_KERNEL_NO_CC_VERSION_CHECK)
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is non-empty.
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---
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--- a/Makefile
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+++ b/Makefile
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@@ -1876,7 +1876,7 @@ PHONY += prepare
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# now expand this into a simple variable to reduce the cost of shell evaluations
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prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT)
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prepare:
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- @if [ "$(CC_VERSION_TEXT)" != "$(CONFIG_CC_VERSION_TEXT)" ]; then \
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+ @if [ -z "$(DEBIAN_KERNEL_NO_CC_VERSION_CHECK)" ] && [ "$(CC_VERSION_TEXT)" != "$(CONFIG_CC_VERSION_TEXT)" ]; then \
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echo >&2 "warning: the compiler differs from the one used to build the kernel"; \
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echo >&2 " The kernel was built by: $(CONFIG_CC_VERSION_TEXT)"; \
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echo >&2 " You are using: $(CC_VERSION_TEXT)"; \
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