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authorDavid Gibson <david@gibson.dropbear.id.au>2022-06-14 15:12:21 +1000
committerStefano Brivio <sbrivio@redhat.com>2022-06-18 09:06:00 +0200
commit08007d0b25a8175bf6f663fd12b25e4e4eea4d17 (patch)
tree07423d7a49bec2f220848ef7d6a40516d0a11ef0 /qrap.c
parent465712721efac593beac8a1879bf2f11ed121d12 (diff)
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Makefile: Avoid using wildcard sources
The passt/pasta Makefile makes fairly heavy use of GNU make's $(wildcard) function to locate the sources and headers to build. Using wildcards for the things to compile is usually a bad idea though: if somehow you end up with a .c or .h file in your tree you didn't expect it can misbuild in an exceedingly confusing way. In particular this can sometimes happen if switching between releases / branches where files have been added or removed without 100% cleaning the tree. It also makes life a bit complicated if building multiple different binaries in the same tree: we already have some rather awkward $(filter-out) constructions to avoid including qrap.c in the passt build. Replace use of $(wildcard) with the more idiomatic approach of defining variables listing all the relevant source files then using that throughout. In the rule for seccomp.h there was also a bare "*.c" which caused make to always rebuild that target. Fix that as well. Similarly, seccomp.sh uses a wildcard to locate the sources, which is unwise for the same reasons. Make it take the sources to examine on the command line instead, and have the Makefile pass them in from the same variables. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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