lib/log.mk: check hasher version

There is at least one known deficiency for mkimage-profiles: build.log will be truncated if verbose mode is enabled and hasher version is lower than 1.3.22. The check is done here since it's where the logging is arranged, and doing it in image.in/Makefile would result in the warning about log-truncating software being truncated by the said software. Thanks Max Kosmach for reporting this inobviousity.

lib/log.mk: check hasher version
88050c97 · Michael Shigorin · c6ee8861 · 88050c97
Commit 88050c97 authored Apr 03, 2012 by Michael Shigorin
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log.mk lib/log.mk +8 -0

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--- a/lib/log.mk
+++ b/lib/log.mk
@@ -6,6 +6,14 @@ ifndef MKIMAGE_PROFILES
 $(error this makefile is designed to be included in toplevel one)
 endif

+# 1.3.22 fixes http://bugzilla.altlinux.org/26217
+HSH_VER_OPTIMAL = 1.3.22
+HSH_VERSION := $(shell hsh -V | sed -n 's/^.* version \([0-9.]\+\).*$$/\1/p')
+
+ifeq (-,$(shell rpmvercmp $(HSH_VERSION) $(HSH_VER_OPTIMAL) | tr -d [0-9]))
+$(info warning: hasher-$(HSH_VERSION) is suboptimal, consider upgrading)
+endif
+
 BUILDLOG ?= $(BUILDDIR)/build.log

 # LOG holds a redirecting postprocessor