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build: Debug system feature tests.

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`make` without `-s` option will normally show the commands executed. In
the case of detecting build environment features current makefile will
cause detected features to be seen as 'echo #define' commands, but not
detected ones will be silent. Change it so that all tried features can
be seen (outside of make's silent mode) regardless of detection result.

Signed-off-by: Michał Mirosław <emmir@google.com>
This commit is contained in:
Michał Mirosław 2022-06-20 20:36:30 +02:00 committed by Andrei Vagin
parent aa6b633912
commit 2d76e4b31a
1 changed files with 2 additions and 1 deletions
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Makefile.config
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@ -85,7 +85,8 @@ FEATURES_LIST := TCP_REPAIR STRLCPY STRLCAT PTRACE_PEEKSIGINFO \
define gen-feature-test
ifeq ($$(call try-cc,$$(FEATURE_TEST_$(1)),$$(LIBS_FEATURES),$$(DEFINES)),true)
$(Q) echo '#define CONFIG_HAS_$(1)' >> $$@
$(Q) echo '' >> $$@
else
$(Q) echo '// CONFIG_HAS_$(1) is not set' >> $$@
endif
endef