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Make changes necessary for stopping the build if a cyclic library

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dependency is found. The find-cycles.pl script now exits with a return code
that equals the number of cycles found. The Makefile was changed to ignore
the status code of find-cycles.pl. This should be removed once the libraries
are free of cyclic dependencies.

llvm-svn: 29290
This commit is contained in:
Reid Spencer 2006-07-26 17:10:54 +00:00
parent 62ffefecfa
commit ed6495426c
2 changed files with 4 additions and 2 deletions
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2
tools/llvm-config/Makefile
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@ -39,7 +39,7 @@ $(LibDeps): $(GenLibDeps) $(LibDir) $(wildcard $(LibDir)/*.a $(LibDir)/*.o)
# don't have to process them at runtime. # don't have to process them at runtime.
$(FinalLibDeps): find-cycles.pl $(LibDeps) $(FinalLibDeps): find-cycles.pl $(LibDeps)
$(Echo) "Finding cyclic dependencies between LLVM libraries." $(Echo) "Finding cyclic dependencies between LLVM libraries."
$(Verb) $(PERL) $< < $(LibDeps) > $@ -$(Verb) $(PERL) $< < $(LibDeps) > $@
# Rerun our configure substitutions as needed. # Rerun our configure substitutions as needed.
ConfigInIn = $(PROJ_SRC_DIR)/llvm-config.in.in ConfigInIn = $(PROJ_SRC_DIR)/llvm-config.in.in

4
tools/llvm-config/find-cycles.pl
View File

@ -40,6 +40,7 @@ find_all_cycles();
# Print out the finished cycles, with their dependencies. # Print out the finished cycles, with their dependencies.
my @output; my @output;
my $cycles_found = 0;
foreach my $cycle (@CYCLES) { foreach my $cycle (@CYCLES) {
my @modules = sort keys %{$cycle}; my @modules = sort keys %{$cycle};
@ -57,6 +58,7 @@ foreach my $cycle (@CYCLES) {
# Warn about possible linker problems. # Warn about possible linker problems.
my @archives = grep(/\.a$/, @modules); my @archives = grep(/\.a$/, @modules);
if (@archives > 1) { if (@archives > 1) {
$cycles_found = $cycles_found + 1;
print STDERR "find-cycles.pl: Circular dependency between *.a files:\n"; print STDERR "find-cycles.pl: Circular dependency between *.a files:\n";
print STDERR "find-cycles.pl: ", join(' ', @archives), "\n"; print STDERR "find-cycles.pl: ", join(' ', @archives), "\n";
print STDERR "find-cycles.pl: Some linkers may have problems.\n"; print STDERR "find-cycles.pl: Some linkers may have problems.\n";
@ -68,7 +70,7 @@ foreach my $cycle (@CYCLES) {
join(' ', sort keys %dependencies) . "\n"); join(' ', sort keys %dependencies) . "\n");
} }
print sort @output; print sort @output;
exit $cycles_found;
#========================================================================== #==========================================================================
# Depedency Cycle Support # Depedency Cycle Support