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| author | Lasse Collin <lasse.collin@tukaani.org> | 2024-03-13 21:17:10 +0200 |
|---|---|---|
| committer | Lasse Collin <lasse.collin@tukaani.org> | 2024-03-15 17:30:50 +0200 |
| commit | 2ad7fad67080e88fa7fc191f9d613d8b7add9c62 (patch) | |
| tree | c9d87949da2f079967e21dfe1d0148762e38fc59 /CMakeLists.txt | |
| parent | CMake: Make symbol versioning configurable. (diff) | |
| download | xz-2ad7fad67080e88fa7fc191f9d613d8b7add9c62.tar.xz | |
CMake: Disable symbol versioning on non-glibc Linux.
This better matches what configure.ac does. For example, musl has
only basic symbol versioning support:
https://wiki.musl-libc.org/functional-differences-from-glibc.html#Symbol_versioning
configure.ac tries to enable symbol versioning only with glibc
so now CMake does the same.
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 4da57773..cc626b41 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -358,8 +358,26 @@ if(NOT WIN32) # This includes a few extra compatibility symbols for RHEL/CentOS 7 # which are pointless on non-glibc non-Linux systems. # - # FIXME? Avoid symvers on Linux with non-glibc like musl? - set(SYMBOL_VERSIONING_DEFAULT "linux") + # Avoid symvers on Linux with non-glibc like musl and uClibc. + # In Autoconf it's enough to check that $host_os equals linux-gnu + # instead of, for example, linux-musl. CMake doesn't provide such + # a method. + # + # This check is here for now since it's not strictly required + # by anything else. + check_c_source_compiles( + "#include <features.h> + #if defined(__GLIBC__) && !defined(__UCLIBC__) + int main(void) { return 0; } + #else + compile error + #endif + " + IS_LINUX_WITH_GLIBC) + + if(IS_LINUX_WITH_GLIBC) + set(SYMBOL_VERSIONING_DEFAULT "linux") + endif() elseif(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD") set(SYMBOL_VERSIONING_DEFAULT "generic") |