Build failure problem with CLANG_INCLUDE_DIRS

[jamadagni]

After the problem I reported in issue #23 I am still having problems building. That issue only solved the cmake execution, but when I run make, I got:

[samjnaa:~/sr/_repos/git/_dlang/calypso/build] make
...
[  8%] Building CXX object CMakeFiles/LDCShared.dir/dmd2/cpp/cppexpression.cpp.o
In file included from /home/samjnaa/sr/_repos/svn/_llvm/llvm-3.6/tools/clang/include/clang/AST/ASTTypeTraits.h:19:0,
                from /home/samjnaa/sr/_repos/svn/_llvm/llvm-3.6/tools/clang/include/clang/AST/ASTContext.h:18,
                from /home/samjnaa/sr/_repos/git/_dlang/calypso/dmd2/cpp/astunit.h:18,
                from /home/samjnaa/sr/_repos/git/_dlang/calypso/dmd2/cpp/cppexpression.cpp:3:
/home/samjnaa/sr/_repos/svn/_llvm/llvm-3.6/tools/clang/include/clang/AST/ASTFwd.h:22:35: fatal error: clang/AST/DeclNodes.inc: No such file or directory
#include "clang/AST/DeclNodes.inc"
                                ^
compilation terminated.

So I look for the required file:

[samjnaa:~/sr/_repos/git/_dlang/calypso/build] find /home/samjnaa/sr/_repos/svn/_llvm/ -name "DeclNodes.inc"
/home/samjnaa/sr/_repos/svn/_llvm/build/tools/clang/include/clang/AST/DeclNodes.inc

Then I changed the CLANG_INCLUDE_DIRS in the cmake command to use the built include dirs:

[samjnaa:~/sr/_repos/git/_dlang/calypso/build] cmake .. -DLLVM_SOURCE_PATH="/home/samjnaa/sr/_repos/svn/_llvm/llvm-3.6" -DCLANG_INCLUDE_DIRS="/home/samjnaa/sr/_repos/svn/_llvm/llvm-3.6/build/tools/clang/include"
-- LDC version identifier: cfcae2
-- Using path for Intrinsics.td: /usr/lib/llvm-3.7/include
-- Configuring done
-- Generating done
-- Build files have been written to: /home/samjnaa/sr/_repos/git/_dlang/calypso/build

But now the make is looking for a header which is in the source include dirs:

[samjnaa:~/sr/_repos/git/_dlang/calypso/build] make
...
[  8%] Building CXX object CMakeFiles/LDCShared.dir/dmd2/cpp/cppexpression.cpp.o
In file included from /home/samjnaa/sr/_repos/git/_dlang/calypso/dmd2/cpp/cppexpression.cpp:3:0:
/home/samjnaa/sr/_repos/git/_dlang/calypso/dmd2/cpp/astunit.h:18:34: fatal error: clang/AST/ASTContext.h: No such file or directory
#include "clang/AST/ASTContext.h"
                                ^
compilation terminated.
...
[samjnaa:~/sr/_repos/git/_dlang/calypso/build] find /home/samjnaa/sr/_repos/svn/_llvm/ -name "ASTContext.h"
/home/samjnaa/sr/_repos/svn/_llvm/llvm-3.6/tools/clang/include/clang/AST/ASTContext.h

Then I try to specify both, using : (colon) as the path separator on my platform:

[samjnaa:~/sr/_repos/git/_dlang/calypso/build] cmake .. -DLLVM_SOURCE_PATH="/home/samjnaa/sr/_repos/svn/_llvm/llvm-3.6" -DCLANG_INCLUDE_DIRS="/home/samjnaa/sr/_repos/svn/_llvm/llvm-3.6/build/tools/clang/include:/home/samjnaa/sr/_repos/svn/_llvm/llvm-3.6/tools/clang/include"
-- LDC version identifier: cfcae2
-- Using path for Intrinsics.td: /usr/lib/llvm-3.7/include
-- Configuring done
-- Generating done
-- Build files have been written to: /home/samjnaa/sr/_repos/git/_dlang/calypso/build

But still no fruit and I'm getting the same error. I tried using the semicolon and curiously I get the previous error. I'm not sure what else to try...

[jamadagni]

Hello and thanks for your kind reply at issue #23. I did not realize the significance of the wording "build and install Clang" in the documentation – that it was necessary that the same version be both in the tree and in my executable root. Now everything is fine.