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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:25:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:25:44 +0000 |
commit | b3925d944ed94cc76bbcbb14a799ec9beeb8d1bf (patch) | |
tree | a5e5ccdbc84294390695b5ae3a8c89cc16e6cbae /m4/ioctl.m4 | |
parent | Initial commit. (diff) | |
download | wget-b3925d944ed94cc76bbcbb14a799ec9beeb8d1bf.tar.xz wget-b3925d944ed94cc76bbcbb14a799ec9beeb8d1bf.zip |
Adding upstream version 1.21.4.upstream/1.21.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'm4/ioctl.m4')
-rw-r--r-- | m4/ioctl.m4 | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/m4/ioctl.m4 b/m4/ioctl.m4 new file mode 100644 index 0000000..83036c3 --- /dev/null +++ b/m4/ioctl.m4 @@ -0,0 +1,44 @@ +# ioctl.m4 serial 6 +dnl Copyright (C) 2008-2023 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_IOCTL], +[ + AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS]) + AC_REQUIRE([gl_SYS_SOCKET_H]) + HAVE_IOCTL=1 + if test "$ac_cv_header_winsock2_h" = yes; then + dnl Even if the 'socket' module is not used here, another part of the + dnl application may use it and pass file descriptors that refer to + dnl sockets to the ioctl() function. So enable the support for sockets. + HAVE_IOCTL=0 + else + AC_CHECK_FUNCS([ioctl]) + dnl On glibc systems, the second parameter is 'unsigned long int request', + dnl not 'int request'. We cannot simply cast the function pointer, but + dnl instead need a wrapper. + AC_CACHE_CHECK([for ioctl with POSIX signature], + [gl_cv_func_ioctl_posix_signature], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#include <sys/ioctl.h> + /* On some platforms, ioctl() is declared in <unistd.h>. */ + #include <unistd.h> + ]], + [[extern + #ifdef __cplusplus + "C" + #endif + int ioctl (int, int, ...); + ]]) + ], + [gl_cv_func_ioctl_posix_signature=yes], + [gl_cv_func_ioctl_posix_signature=no]) + ]) + if test $gl_cv_func_ioctl_posix_signature != yes; then + REPLACE_IOCTL=1 + fi + fi +]) |