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Date: Wed, 9 Apr 1997 12:14:32 -0700 (PDT)
From: John Polstra <jdp>
Message-Id: <199704091914.MAA09586@freefall.freebsd.org>
To: CVS-committers, cvs-all, cvs-lib
Subject: cvs commit:  src/lib/csu/i386 c++rt0.c
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jdp         97/04/09 12:14:32

  Modified:    lib/csu/i386  c++rt0.c
  Log:
  Declare the constructor/destructor linker sets as extern rather than
  common.  Add one do-nothing element to each set.  This ensures that
  the linker realizes that they are linker sets rather than simple
  commons, and makes it possible to link c++rt0.o into every shared
  library regardless of whether it is a C++ library or not.  Without
  this change, the constructors and destructors in the main program
  could be executed multiple times.
  
  This change is going to make it possible to get rid of the
  CPLUSPLUSLIB makefile variable once and for all.  It is a piece of
  the solution to PR gnu/3505 (gcc -shared).  Finally, it fixes a
  heretofore unreported bug:  If CPLUSPLUSLIB was set in a makefile
  for a C++ shared library that had no static constructors or
  destructors in it, then the main program's constructors and
  destructors would be executed multiple times.
  
  Revision  Changes    Path
  1.8       +24 -3     src/lib/csu/i386/c++rt0.c