--enable-shared configure flag to have the tools linked shared. (2.7svn is just
$(LLVMVersion) so it'll change to "2.7" in the release.) Always link the
example programs shared to test that the shared library keeps working.
On my mac laptop, Debug libLLVM2.7svn.dylib is 39MB, and opt (for example) is
16M static vs 440K shared.
Two things are less than ideal here:
1) The library doesn't include any version information. Since we expect to break
the ABI with every release, this shouldn't be much of a problem. If we do
release a compatible 2.7.1, we may be able to hack its library to work with
binaries compiled against 2.7.0, or we can just ask them to recompile. I'm
hoping to get a real packaging expert to look at this for the 2.8 release.
2) llvm-config doesn't yet have an option to print link options for the shared
library. I'll add this as a subsequent patch.
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Otherwise we'll end with random cyclic deps between libraries due to this.
Proposed by Gianluigi Tiesi!
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which the makefiles will create by symlinking the actual tool to.
- For use by clang, where we want to make 'clang++' and alias for clang (which
enables C++ support in the driver)
- Not sure this is the best approach, alternative suggestions welcome!
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DEBUG_RUNTIME Makefile variable to pass -g to gcc when building LLVM's objects.
Without this, it's very hard to debug crashes that happen in Release-Asserts
mode but not Debug mode.
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- 'make unittests' still builds and tests.
- 'make unitcheck' inside a unittest directory runs the tests in that directory.
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- 'make unittests' still builds and tests.
- 'make unitcheck' inside a unittest directory runs the tests in that directory.
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llvm-ld shell wrapper script in the archive, not the relinked object!
Also, rename the temp file to avoid conflicts.
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try to use i686-darwin to build for arm-eabi, you'll quickly run into
several false assumptions that the target OS must be the same as the
host OS. These patches split $(OS) into $(HOST_OS) and $(TARGET_OS) to
help builds like "make check" and the test-suite able to cross
compile. Along the way a target of *-unknown-eabi is defined as
"Freestanding" so that TARGET_OS checks have something to work with.
Patch by Sandeep Patel!
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Controls whether libCompilerDriver should be loaded dynamically. By default this
is needed only on Win32, to make dynamic plugins work.
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Implemented by making lib/CompilerDriver a shared library that holds all the
global static data (CommandLine options, plugin registry) that we unfortunately
have to live with.
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Chris recently broke llvmc with his Makefile changes (r75379). That patch made
the global change .o -> .a, which caused built-in llvmc plugins to stop working
since plugin initialization in llvmc is based on static variables not referenced
from the main executable. This patch implements auto-generated forced references
to the plugin libraries.
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place it with -pedantic. Remove -Wunused since it
is implied by -Wall. Group -Wno-unused-parameter
with -Wall -W since it is the combination of these
two that turns on -Wunused-parameter.
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object files. Now we always build LLVM libraries into archives (.a files).
This makes the 'make' build work more like the cmake build, among other
things. Doing this exposed some latent circular library dependencies, so
I think that llvm-config wasn't quite right for .o files anyway.
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gcc rather than directly to the linker: gcc will
then modify the linker options it generates (it
will not use --relax for example, incompatible
with -r, as it otherwise would). This fixes the
sparc build.
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pthreads, otherwise ar complains of unresolved references to pthread_mutex_*.
LTO doesn't actually use pthreads, but ManagedStatic does.
Fix this by linking in LIBS (that contains pthreads) for LTO and gold.
For now this links in more libs than needed (libffi for example), we can figure
out later how to link in those libs per-tool later.
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- This matches the normal dependency generation code.
- This also fixes the problem that when building a normal and bitcode
archive from the same source, the dependency files would overwrite
one another. Which was bad.
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possible to build both a .a and a .bca.
- My understanding is no one else is using this stuff, please let me
know if I am wrong.
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Should now work when building with objdir != srcdir and when llvm-gcc is not
available.
Thanks to Duncan Sands for testing and advice!
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we're not testing out-of-date code. This also makes "make check" and
"make unittests" work out-of-the box right after the configure step, without
requiring the user to run "make tools-only" or "make libs-only".
Tested on Linux/x86_64 and Darwin/x86.
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- Required some extra makefile tweaks to introduce a new flag var
which only goes to compile/link tools but not the relink step,
otherwise we get a copy of libgcov in the relinked .o files.
- No configure magic for this.
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From the code: "There are "Proj" libs (defined by the user's project) and "LLVM"
libs (defined by the LLVM project)." LINK_COMPONENTS are clearly defined by the
LLVM project.
Additionally, this fixes an issue with llvmc's build process:-)
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