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cmDepends: allow multiple dependees per depender

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This patch is heavily inspired by Michael Wild.

The interfaces cmDepends::Write and cmDepends::WriteDependencies where
extended to allow multiple dependees (sources) per depender (object).
cmDepends::Write first collect all dependencies into a std::set before
passing it to cmDepends::WriteDependencies.

cmDependsC::WriteDependencies also first collects all explicit and
implicit dependencies into a std::set and only then writes
depend.{internal,make}. The implementation of cmDependsFortran simply
loops over all sources and proceeds as before, whereas the cmDependsJava
implementation is as trivial as before.

This is for preventing exponential growth of depend.{internal,make} in
the next commit which fixes dependency-vector erasure in
cmDepends::CheckDependencies.

Inspired-by: Michael Wild <themiwi@users.sourceforge.net>
This commit is contained in:
Alex Neundorf
2012-09-30 17:53:01 +02:00
committed by Brad King
parent ecc77d09b8
commit e74ff7c29f
8 changed files with 75 additions and 50 deletions
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6
Source/cmDependsJava.cxx
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@@ -25,11 +25,11 @@ cmDependsJava::~cmDependsJava()
}
//----------------------------------------------------------------------------
bool cmDependsJava::WriteDependencies(const char *src, const char *,
std::ostream&, std::ostream&)
bool cmDependsJava::WriteDependencies(const std::set<std::string>& sources,
const std::string&, std::ostream&, std::ostream&)
{
// Make sure this is a scanning instance.
if(!src || src[0] == '\0')
if(sources.empty() || sources.begin()->empty())
{
cmSystemTools::Error("Cannot scan dependencies without an source file.");
return false;