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authorMike Frysinger <vapier@gentoo.org>2023-01-02 21:16:19 -0500
committerMike Frysinger <vapier@gentoo.org>2023-01-02 21:16:19 -0500
commit80636a54bcfa2bca3dc8f7de4a7825f86585b1f1 (patch)
tree8ce9098ef414b136eda2416a8155d70dd9db6279 /sim/cr16
parent3b89a7b8ce97e7e3773bbd1ebcf23b269b2d6669 (diff)
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sim: build: move generated headers to built sources
Automake's automatic header deptracking has a bootstrap problem where it can't detect generated headers when compiling. We've been handling that by adding a custom SIM_ALL_RECURSIVE_DEPS variable, but that only works when building objects recursively in subdirs. As we move those out to the top-level, we don't have any recursive steps anymore. The Automake approach is to declare those headers in BUILT_SOURCES. This isn't completely foolproof as the Automake manual documents: it only activates for `make all`, not `make foo.o`, but that shouldn't be a huge limitation as it only affects the initial compile. After that, rebuilds should work fine.
Diffstat (limited to 'sim/cr16')
-rw-r--r--sim/cr16/local.mk3
1 files changed, 2 insertions, 1 deletions
diff --git a/sim/cr16/local.mk b/sim/cr16/local.mk
index cb0d605..f5401f6 100644
--- a/sim/cr16/local.mk
+++ b/sim/cr16/local.mk
@@ -24,9 +24,10 @@
noinst_PROGRAMS += %D%/run
+## List all generated headers to help Automake dependency tracking.
+BUILT_SOURCES += %D%/simops.h
%C%_BUILD_OUTPUTS = \
%D%/gencode$(EXEEXT) \
- %D%/simops.h \
%D%/table.c
## This makes sure build tools are available before building the arch-subdirs.