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GraphWriter: detect graph viewer programs at runtime

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Replace the crufty build-time configure checks for program paths with
equivalent runtime logic.

This lets users install graphing tools as needed without having to reconfigure
and rebuild LLVM, while eliminating a long chain of inappropriate compile
dependencies that included GUI programs and the windowing system.

Additional features:

 * Support the OS X 'open' command to view graphs generated by any of the
   Graphviz utilities. This is an alternative to the Graphviz OS X UI which is
   no longer available on Mountain Lion.

 * Produce informative log output upon failure to indicate which programs can
   be installed to view graphs.

Ping me if this doesn't work for your particular environment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210001 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alp Toker
2014-06-02 01:40:04 +00:00
parent df1913982b
commit 04de60e28f
9 changed files with 131 additions and 368 deletions
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27
include/llvm/Config/llvm-config.h.cmake
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@@ -79,33 +79,6 @@
/* Define if this is Win32ish platform */
#cmakedefine LLVM_ON_WIN32 ${LLVM_ON_WIN32}
/* Define to path to circo program if found or 'echo circo' otherwise */
#cmakedefine LLVM_PATH_CIRCO "${LLVM_PATH_CIRCO}"
/* Define to path to dot program if found or 'echo dot' otherwise */
#cmakedefine LLVM_PATH_DOT "${LLVM_PATH_DOT}"
/* Define to path to dotty program if found or 'echo dotty' otherwise */
#cmakedefine LLVM_PATH_DOTTY "${LLVM_PATH_DOTTY}"
/* Define to path to fdp program if found or 'echo fdp' otherwise */
#cmakedefine LLVM_PATH_FDP "${LLVM_PATH_FDP}"
/* Define to path to Graphviz program if found or 'echo Graphviz' otherwise */
#cmakedefine LLVM_PATH_GRAPHVIZ "${LLVM_PATH_GRAPHVIZ}"
/* Define to path to gv program if found or 'echo gv' otherwise */
#cmakedefine LLVM_PATH_GV "${LLVM_PATH_GV}"
/* Define to path to neato program if found or 'echo neato' otherwise */
#cmakedefine LLVM_PATH_NEATO "${LLVM_PATH_NEATO}"
/* Define to path to twopi program if found or 'echo twopi' otherwise */
#cmakedefine LLVM_PATH_TWOPI "${LLVM_PATH_TWOPI}"
/* Define to path to xdot.py program if found or 'echo xdot.py' otherwise */
#cmakedefine LLVM_PATH_XDOT_PY "${LLVM_PATH_XDOT_PY}"
/* Installation prefix directory */
#cmakedefine LLVM_PREFIX "${LLVM_PREFIX}"