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| author | Brad King <brad.king@kitware.com> | 2015-09-30 17:42:50 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2015-09-30 19:01:23 (GMT) |
| commit | 8b4873a1b025d7f47c90f3cafc93ca152b9e4652 (patch) | |
| tree | bfbccc8785c7852687be5a6fafcde4dd9707805b /Modules/CMakeDetermineCompilerId.cmake | |
| parent | e90f463a312e18fd6498799de1522b96d84fd012 (diff) | |
| download | CMake-8b4873a1b025d7f47c90f3cafc93ca152b9e4652.zip CMake-8b4873a1b025d7f47c90f3cafc93ca152b9e4652.tar.gz CMake-8b4873a1b025d7f47c90f3cafc93ca152b9e4652.tar.bz2 | |
Disable shared library support when compiler links statically
When a user or a compiler wrapper adds '-static' to the compiler flags
then it will always link static binaries. Detect this from the compiler
id binary and disable TARGET_SUPPORTS_SHARED_LIBS. This will prevent
projects from accidentally adding shared libraries when the toolchain
does not support them. It also helps CMake avoid linking with flags
that require shared libraries to be supported.
Diffstat (limited to 'Modules/CMakeDetermineCompilerId.cmake')
| -rw-r--r-- | Modules/CMakeDetermineCompilerId.cmake | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Modules/CMakeDetermineCompilerId.cmake b/Modules/CMakeDetermineCompilerId.cmake index df6daf3..591ecb8 100644 --- a/Modules/CMakeDetermineCompilerId.cmake +++ b/Modules/CMakeDetermineCompilerId.cmake @@ -106,6 +106,7 @@ function(CMAKE_DETERMINE_COMPILER_ID lang flagvar src) set(MSVC_${lang}_ARCHITECTURE_ID "${MSVC_${lang}_ARCHITECTURE_ID}" PARENT_SCOPE) set(CMAKE_${lang}_CL_SHOWINCLUDES_PREFIX "${CMAKE_${lang}_CL_SHOWINCLUDES_PREFIX}" PARENT_SCOPE) + set(CMAKE_${lang}_COMPILER_LINKS_STATICALLY "${CMAKE_${lang}_COMPILER_LINKS_STATICALLY}" PARENT_SCOPE) set(CMAKE_${lang}_COMPILER_VERSION "${CMAKE_${lang}_COMPILER_VERSION}" PARENT_SCOPE) set(CMAKE_${lang}_SIMULATE_ID "${CMAKE_${lang}_SIMULATE_ID}" PARENT_SCOPE) set(CMAKE_${lang}_SIMULATE_VERSION "${CMAKE_${lang}_SIMULATE_VERSION}" PARENT_SCOPE) @@ -529,6 +530,13 @@ function(CMAKE_DETERMINE_COMPILER_ID_CHECK lang file) endif() endif() + if(UNIX) + execute_process(COMMAND file "${file}" OUTPUT_VARIABLE out ERROR_VARIABLE out) + if(out MATCHES "statically linked") + set(CMAKE_${lang}_COMPILER_LINKS_STATICALLY 1 PARENT_SCOPE) + endif() + endif() + # Check if a valid compiler and platform were found. if(COMPILER_ID AND NOT COMPILER_ID_TWICE) set(CMAKE_${lang}_COMPILER_ID "${COMPILER_ID}") |