mirror of https://git.tukaani.org/xz.git
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.
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@ -358,8 +358,26 @@ if(NOT WIN32)
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# This includes a few extra compatibility symbols for RHEL/CentOS 7
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# This includes a few extra compatibility symbols for RHEL/CentOS 7
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# which are pointless on non-glibc non-Linux systems.
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# which are pointless on non-glibc non-Linux systems.
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#
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#
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# FIXME? Avoid symvers on Linux with non-glibc like musl?
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# Avoid symvers on Linux with non-glibc like musl and uClibc.
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# In Autoconf it's enough to check that $host_os equals linux-gnu
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# instead of, for example, linux-musl. CMake doesn't provide such
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# a method.
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#
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# This check is here for now since it's not strictly required
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# by anything else.
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check_c_source_compiles(
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"#include <features.h>
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#if defined(__GLIBC__) && !defined(__UCLIBC__)
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int main(void) { return 0; }
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#else
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compile error
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#endif
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"
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IS_LINUX_WITH_GLIBC)
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if(IS_LINUX_WITH_GLIBC)
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set(SYMBOL_VERSIONING_DEFAULT "linux")
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set(SYMBOL_VERSIONING_DEFAULT "linux")
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endif()
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elseif(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
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elseif(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
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set(SYMBOL_VERSIONING_DEFAULT "generic")
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set(SYMBOL_VERSIONING_DEFAULT "generic")
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