April 2025 - devel - example.com

[PATCH v1] include/uchar.h: only typedef mbstate_t if __mbstate_t exists
by Thomas Devoogdt 17 Apr '25

17 Apr '25

In file included from /home/thomas/br-test-pkg/br-powerpc-603e-basic-cpp/build/fluent-bit-4.0.0/include/fluent-bit/simdutf/flb_simdutf_connector.h:32, from /home/thomas/br-test-pkg/br-powerpc-603e-basic-cpp/build/fluent-bit-4.0.0/include/fluent-bit/flb_unicode.h:26, from /home/thomas/br-test-pkg/br-powerpc-603e-basic-cpp/build/fluent-bit-4.0.0/plugins/in_tail/tail_file.c:52: /home/thomas/br-test-pkg/br-powerpc-603e-basic-cpp/host/powerpc-buildroot-linux-uclibc/sysroot/usr/include/uchar.h:36:9: error: unknown type name ‘__mbstate_t’ 36 | typedef __mbstate_t mbstate_t; | ^~~~~~~~~~~ The __mbstate_t type is created in wchar.h, and there, __mbstate_t_defined gets defined, and __need_mbstate_t gets undefined. The mbstate_t type is not created in wchar.h, since __need_mbstate_t is defined in uchar.h. Its not yet clear why __mbstate_t_defined is not defined in uchar.h after the wchar.h include, but the fact is, if it's not, that we can't define mbstate_t. Signed-off-by: Thomas Devoogdt <thomas(a)devoogdt.com> --- Beware that I'm not completly sure about the __mbstate_t_defined and __need_mbstate_t, so please review the patch carefully. --- include/uchar.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/include/uchar.h b/include/uchar.h index 5e10196d7..58cf1918f 100644 --- a/include/uchar.h +++ b/include/uchar.h @@ -30,12 +30,11 @@ #define __need_mbstate_t #include <wchar.h> -#ifndef __mbstate_t_defined +#ifdef __mbstate_t_defined __BEGIN_NAMESPACE_C99 /* Public type. */ typedef __mbstate_t mbstate_t; __END_NAMESPACE_C99 -# define __mbstate_t_defined 1 #endif -- 2.43.0

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New Release 1.0.52 is out
by Waldemar Brodkorb 06 Apr '25

06 Apr '25

Hi Embedded Hackers, I released 1.0.52 today. Here is the shortlog: Frank Mehnert (4): nan.h: define NAN only if not already defined libc/string/x86_64: fix p2align max number of bytes to skip stdint.h: don't define __INT64_C / __UINT64_C if already defined spawn.h: fix compiler warning about unused variable Georg Kotheimer (2): Make getauxval work with static linking Support non-cached entries in getauxval Jan Klötzke (4): inet/resolv.c: set h_errnop if /etc/hosts cannot be opened Do not rely on unrelocated GOT entries Use __ehdr_start to compute load address Use __ehdr_start as known zero link address symbol Jeffrey H. Johnson (1): Rename variable to fix compilation with GCC 15 Marcus Haehnel (2): Fix missing include in __uClibc_main ldso.h: factor out _dl_auxvt from ldso.h Peter Seiderer (1): m68k: fix SUPPORT_LD_DEBUG null pointer access Thomas Devoogdt (1): mount.h: fix MS_{} being seen as an identifier iso a variable Thomas Petazzoni (1): include/stdlib.h: only expose reallocarray() prototype when implementation is available Thorsten Glaser (1): m68k: fix alignment in NPTL code Waldemar Brodkorb (4): bfin: fix compile and linking errors with gcc 14.2.0 aarch64: add fenv support from glibc arm: add fenv support from glibc bump version for 1.0.52 release Thanks to all Contributors. Extra Thanks to Kernconcept for there continous work on good clang support. Sunshine! Waldemar

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[PATCH] mount.h: fix MS_{} being seen as an identifier iso a variable
by Thomas Devoogdt 05 Apr '25

05 Apr '25

In file included from /home/thomas/external/buildroot2/output/host/mips64-buildroot-linux-uclibc/sysroot/usr/include/linux/fs.h:19, from /home/thomas/external/buildroot2/output/host/mips64-buildroot-linux-uclibc/sysroot/usr/include/linux/btrfs.h:29, from libmount/src/btrfs.c:22: /home/thomas/external/buildroot2/output/host/mips64-buildroot-linux-uclibc/sysroot/usr/include/sys/mount.h:38:3: error: expected identifier before numeric constant 38 | MS_NOSUID = 2, /* Ignore suid and sgid bits. */ | ^~~~~~~~~ Fixes: - https://github.com/util-linux/util-linux/issues/3501 - https://lore.kernel.org/buildroot/CACXRmJioVq7PUwBkCPNj0k-47hrJ_vtgVYtzp+_8… Signed-off-by: Thomas Devoogdt <thomas(a)devoogdt.com> --- include/sys/mount.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/include/sys/mount.h b/include/sys/mount.h index c0e7b84f8..f9edbeba3 100644 --- a/include/sys/mount.h +++ b/include/sys/mount.h @@ -32,54 +32,79 @@ supported */ enum { +#undef MS_RDONLY MS_RDONLY = 1, /* Mount read-only. */ #define MS_RDONLY MS_RDONLY +#undef MS_NOSUID MS_NOSUID = 2, /* Ignore suid and sgid bits. */ #define MS_NOSUID MS_NOSUID +#undef MS_NODEV MS_NODEV = 4, /* Disallow access to device special files. */ #define MS_NODEV MS_NODEV +#undef MS_NOEXEC MS_NOEXEC = 8, /* Disallow program execution. */ #define MS_NOEXEC MS_NOEXEC +#undef MS_SYNCHRONOUS MS_SYNCHRONOUS = 16, /* Writes are synced at once. */ #define MS_SYNCHRONOUS MS_SYNCHRONOUS +#undef MS_REMOUNT MS_REMOUNT = 32, /* Alter flags of a mounted FS. */ #define MS_REMOUNT MS_REMOUNT +#undef MS_MANDLOCK MS_MANDLOCK = 64, /* Allow mandatory locks on an FS. */ #define MS_MANDLOCK MS_MANDLOCK +#undef MS_DIRSYNC MS_DIRSYNC = 128, /* Directory modifications are synchronous. */ #define MS_DIRSYNC MS_DIRSYNC +#undef MS_NOATIME MS_NOATIME = 1024, /* Do not update access times. */ #define MS_NOATIME MS_NOATIME +#undef MS_NODIRATIME MS_NODIRATIME = 2048, /* Do not update directory access times. */ #define MS_NODIRATIME MS_NODIRATIME +#undef MS_BIND MS_BIND = 4096, /* Bind directory at different place. */ #define MS_BIND MS_BIND +#undef MS_MOVE MS_MOVE = 8192, #define MS_MOVE MS_MOVE +#undef MS_REC MS_REC = 16384, #define MS_REC MS_REC +#undef MS_SILENT MS_SILENT = 32768, #define MS_SILENT MS_SILENT +#undef MS_POSIXACL MS_POSIXACL = 1 << 16, /* VFS does not apply the umask. */ #define MS_POSIXACL MS_POSIXACL +#undef MS_UNBINDABLE MS_UNBINDABLE = 1 << 17, /* Change to unbindable. */ #define MS_UNBINDABLE MS_UNBINDABLE +#undef MS_PRIVATE MS_PRIVATE = 1 << 18, /* Change to private. */ #define MS_PRIVATE MS_PRIVATE +#undef MS_SLAVE MS_SLAVE = 1 << 19, /* Change to slave. */ #define MS_SLAVE MS_SLAVE +#undef MS_SHARED MS_SHARED = 1 << 20, /* Change to shared. */ #define MS_SHARED MS_SHARED +#undef MS_RELATIME MS_RELATIME = 1 << 21, /* Update atime relative to mtime/ctime. */ #define MS_RELATIME MS_RELATIME +#undef MS_KERNMOUNT MS_KERNMOUNT = 1 << 22, /* This is a kern_mount call. */ #define MS_KERNMOUNT MS_KERNMOUNT +#undef MS_I_VERSION MS_I_VERSION = 1 << 23, /* Update inode I_version field. */ #define MS_I_VERSION MS_I_VERSION +#undef MS_STRICTATIME MS_STRICTATIME = 1 << 24, /* Always perform atime updates. */ #define MS_STRICTATIME MS_STRICTATIME +#undef MS_ACTIVE MS_ACTIVE = 1 << 30, #define MS_ACTIVE MS_ACTIVE +#undef MS_NOUSER MS_NOUSER = 1 << 31 #define MS_NOUSER MS_NOUSER }; -- 2.43.0

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[PATCH] include/stdlib.h: only expose reallocarray() prototype when implementation is available
by Thomas Petazzoni 04 Apr '25

04 Apr '25

The reallocarray() primitive is only provided by the malloc-standard implementation: neither malloc nor malloc-simple provide it. This causes issues when building for example util-linux on noMMU platforms as: - noMMU platforms can't use malloc-standard, so either malloc or malloc-simple are used, which means reallocarray() is not implemented - util-linux detects the absence of reallocarray(), and provides its own implementation, but the prototype clashes with the prototype in uClibc's <stdlib.h> The combination of which causes the following build failure: In file included from lib/color-names.c:7: ./include/c.h:586:21: error: static declaration of ‘reallocarray’ follows non-static declaration 586 | static inline void *reallocarray(void *ptr, size_t nmemb, size_t size) | ^~~~~~~~~~~~ In file included from ./include/c.h:16: /home/thomas/projets/buildroot/output/host/arm-buildroot-uclinux-uclibcgnueabi/sysroot/usr/include/stdlib.h:898:14: note: previous declaration of ‘reallocarray’ with type ‘void *(void *, size_t, size_t)’ {aka ‘void *(void *, unsigned int, unsigned int)’} 898 | extern void *reallocarray (void *__ptr, size_t __m, size_t __n); | ^~~~~~~~~~~~ make[3]: *** [Makefile:12354: lib/libtcolors_la-color-names.lo] Error 1 To fix this, let's not expose the prototype of reallocarray() if we don't provide the implementation for it. Signed-off-by: Thomas Petazzoni <thomas.petazzoni(a)bootlin.com> --- include/stdlib.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/stdlib.h b/include/stdlib.h index d4e0b75e7..448c5e336 100644 --- a/include/stdlib.h +++ b/include/stdlib.h @@ -986,9 +986,13 @@ extern int getpt (void); extern int getloadavg (double __loadavg[], int __nelem) __THROW __nonnull ((1)); +/* reallocarray() only provided by the malloc-standard implementation */ +#if defined(__MALLOC_STANDARD__) extern void *reallocarray (void *__ptr, size_t __m, size_t __n); #endif +#endif + #ifdef _LIBC extern int __drand48_iterate (unsigned short int xsubi[3], struct drand48_data *buffer) attribute_hidden; -- 2.48.1

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