package/devmem2: fix legal-info
Fixes: http://autobuild.buildroot.net/results/1c6/1c69c77d7b378f6f76790fb5ca0078d0db0c40f8 devmem2 is a single C file that is downloaded as-is, and we patch it. We also use that file as the license file. Thus, the file when it is downloaded has a specific hash, but when saved by legal-info, it has a different hash. However, we can't store two different hashes for the same _filename_ with different content. So, we extract the license file as a pre-patch hook, and store it in a separate file, for which we can now add a hash. Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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@ -1,2 +1,3 @@
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# Locally calculated
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sha256 3b15515693bae1ebd14d914e46d388edfec2175829ea1576a7a0c8606ebbe639 devmem2.c
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sha256 560913d09310d446920c16bd0aca1ff21d3b6fedd527195bacfc832ce343e0ae devmem2.c.license
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@ -8,12 +8,17 @@ DEVMEM2_SITE = http://free-electrons.com/pub/mirror
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DEVMEM2_SOURCE = devmem2.c
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DEVMEM2_VERSION = 1
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DEVMEM2_LICENSE = GPL-2.0+
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DEVMEM2_LICENSE_FILES = devmem2.c
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DEVMEM2_LICENSE_FILES = devmem2.c.license
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define DEVMEM2_EXTRACT_CMDS
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cp $(DL_DIR)/$($(PKG)_SOURCE) $(@D)/
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endef
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define DEVMEM2_EXTRACT_LICENSE
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head -n 38 $(@D)/devmem2.c >$(@D)/devmem2.c.license
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endef
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DEVMEM2_PRE_PATCH_HOOKS += DEVMEM2_EXTRACT_LICENSE
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define DEVMEM2_BUILD_CMDS
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$(TARGET_CONFIGURE_OPTS) $(MAKE) -C $(@D) devmem2
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endef
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