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Fix make support for gmake 3.x (#2920) (#2921)

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The "file" make function is only available in gmake 4.x, which isn't
available on RHEL/CentOS 7. Use alternative syntax to support older
gmake versions.

Fixes #2920
This commit is contained in:
Philipp Wagner 2021-05-06 17:07:15 +01:00 committed by GitHub
parent 8624ce6a84
commit 44fd205e12
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 14 additions and 7 deletions
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21
include/verilated.mk.in
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@ -202,16 +202,19 @@ else
endif
# When archiving just objects (.o), use single $(AR) run
# 1. Make .tmp file with list of objects so don't exceed commend line
# 1. Make .verilator_deplist.tmp file with list of objects so don't exceed
# the command line limits when calling $(AR).
# The approach to write the dependency file is compatible with GNU Make 3,
# and can be simplified using the file function once GNU Make 4.x becomes
# the minimum supported version.
# When merging objects (.o) and archives (.a) additionally:
# 1. Extract object files from .a
# 2. Create a new archive from extracted .o and given .o
%.a:
%.a: | %.verilator_deplist.tmp
$(info Archive $(AR) -rcs $@ $^)
$(file >$@.tmp)
$(foreach L, $(filter-out %.a,$^), $(file >>$@.tmp, $L))
$(foreach L, $(filter-out %.a,$^), $(shell echo $L >>$@.verilator_deplist.tmp))
@if test $(words $(filter %.a,$^)) -eq 0; then \
$(AR) -rcs $@ @$@.tmp; \
$(AR) -rcs $@ @$@.verilator_deplist.tmp; \
else \
$(RM) -rf $@.tmpdir; \
for archive in $(filter %.a,$^); do \
@ -220,9 +223,13 @@ endif
$(AR) -x ../../$${archive}; \
cd ../..; \
done; \
$(AR) -rcs $@ @$@.tmp $@.tmpdir/*/*.o; \
$(AR) -rcs $@ @$@.verilator_deplist.tmp $@.tmpdir/*/*.o; \
fi \
; $(RM) -rf $@.tmp $@.tmpdir
; $(RM) -rf $@.verilator_deplist.tmp $@.tmpdir
# Truncate the dependency list file used in the %.a target above.
%.verilator_deplist.tmp:
echo "" > $@
$(VM_PREFIX)__ALL.a: $(VK_OBJS) $(VM_HIER_LIBS)