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| author | Brad King <brad.king@kitware.com> | 2012-12-05 16:49:13 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2012-12-11 20:15:51 (GMT) |
| commit | 2dd67c7ea095957d557d2934a67baacdf8a82d7b (patch) | |
| tree | 3207ea2e40eeb01e0f84538a04ead6193ff5120a /Modules/Platform/Darwin-Clang.cmake | |
| parent | ba58d0c06fd8576844a5722930531a95d00c2003 (diff) | |
| download | CMake-2dd67c7ea095957d557d2934a67baacdf8a82d7b.zip CMake-2dd67c7ea095957d557d2934a67baacdf8a82d7b.tar.gz CMake-2dd67c7ea095957d557d2934a67baacdf8a82d7b.tar.bz2 | |
OS X: Detect implicit link directories on modern toolchains
We detect the implicit link directories for the toolchain by adding a
flag to get verbose output from the compiler front-end while linking the
ABI detection binary. Newer OS X toolchains based on Clang do not add
the implicit link directories with -L options to their internal
invocation of "ld". Instead they use a linker that comes with the
toolchain and is already configured with the proper directories.
Add the "-Wl,-v" option to ask "ld" to print its implicit directories.
It displays them in a block such as:
Library search paths:
/...
Parse this block to extract the implicit link directories.
While at it, remove the checks introduced by commit efaf335b (Skip
implicit link information on Xcode, 2009-07-23) and commit 5195a664
(Skip implicit link info for multiple OS X archs, 2009-09-22). Discard
the non-system link directories added by Xcode. Discard all detected
implicit libraries in the multi-architecture case but keep the
directories. The directories are still useful without the libraries
just to suppress addition of explicit -L options for them.
Diffstat (limited to 'Modules/Platform/Darwin-Clang.cmake')
| -rw-r--r-- | Modules/Platform/Darwin-Clang.cmake | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Modules/Platform/Darwin-Clang.cmake b/Modules/Platform/Darwin-Clang.cmake index de7a856..528873c 100644 --- a/Modules/Platform/Darwin-Clang.cmake +++ b/Modules/Platform/Darwin-Clang.cmake @@ -19,6 +19,7 @@ endif() set(__DARWIN_COMPILER_CLANG 1) macro(__darwin_compiler_clang lang) + set(CMAKE_${lang}_VERBOSE_FLAG "-v -Wl,-v") # also tell linker to print verbose output set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-dynamiclib -Wl,-headerpad_max_install_names") set(CMAKE_SHARED_MODULE_CREATE_${lang}_FLAGS "-bundle -Wl,-headerpad_max_install_names") set(CMAKE_${lang}_SYSROOT_FLAG "-isysroot") |