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authorSergey Bugaev <bugaevc@gmail.com>2024-03-23 20:32:44 +0300
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2024-03-23 22:47:26 +0100
commit49aa652db810ebdca3a662ebd5b0468bd08ec688 (patch)
tree64aa85312a1742e1754cfece8681bee327c59cc9 /libio
parent4648bfbbde5466929d24013478697cbdec847b46 (diff)
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Allow glibc to be compiled without EXEC_PAGESIZE
We would like to avoid statically defining any specific page size on
aarch64-gnu, and instead make sure that everything uses the dynamic
page size, available via vm_page_size and GLRO(dl_pagesize).

There are currently a few places in glibc that require EXEC_PAGESIZE
to be defined. Per Roland's suggestion [0], drop the static
GLRO(dl_pagesize) initializers (for now, only if EXEC_PAGESIZE is not
defined), and don't require EXEC_PAGESIZE definition for libio to
enable mmap usage.

[0]: https://mail.gnu.org/archive/html/bug-hurd/2011-10/msg00035.html

Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Message-ID: <20240323173301.151066-4-bugaevc@gmail.com>
Diffstat (limited to 'libio')
-rw-r--r--libio/libioP.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/libio/libioP.h b/libio/libioP.h
index 1af287b19f..1a7f547e0c 100644
--- a/libio/libioP.h
+++ b/libio/libioP.h
@@ -852,7 +852,7 @@ extern off64_t _IO_seekpos_unlocked (FILE *, off64_t, int)
 #  define MAP_ANONYMOUS MAP_ANON
 # endif
 
-# if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE)
+# if !defined(MAP_ANONYMOUS)
 #  undef _G_HAVE_MMAP
 #  define _G_HAVE_MMAP 0
 # endif