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fs: remove _POSIX_C_SOURCE defining

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On Linux systems, `_POSIX_C_SOURCE` will default to `200809L` (since
glibc 2.10). There's currently no reason for us to undefine it, and then
set it to an earlier value. Also tested with musl libc.

I think if anything, the project should be settings macros like
`_POSIX_C_SOURCE`, globally.
This commit is contained in:
fanquake
2025-05-09 11:43:00 +01:00
parent 87ec923d3a
commit 24e5fd3bed
2 changed files with 0 additions and 18 deletions
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7
cmake/introspection.cmake
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@ -55,13 +55,6 @@ check_cxx_source_compiles("
# Check for posix_fallocate(). # Check for posix_fallocate().
check_cxx_source_compiles(" check_cxx_source_compiles("
// same as in src/util/fs_helpers.cpp
#ifdef __linux__
#ifdef _POSIX_C_SOURCE
#undef _POSIX_C_SOURCE
#endif
#define _POSIX_C_SOURCE 200112L
#endif // __linux__
#include <fcntl.h> #include <fcntl.h>
int main() int main()

11
src/util/fs_helpers.cpp
View File

@ -22,17 +22,6 @@
#include <utility> #include <utility>
#ifndef WIN32 #ifndef WIN32
// for posix_fallocate, in cmake/introspection.cmake we check if it is present after this
#ifdef __linux__
#ifdef _POSIX_C_SOURCE
#undef _POSIX_C_SOURCE
#endif
#define _POSIX_C_SOURCE 200112L
#endif // __linux__
#include <fcntl.h> #include <fcntl.h>
#include <sys/resource.h> #include <sys/resource.h>
#include <unistd.h> #include <unistd.h>