diff options
| author | Paul Eggert <eggert@cs.ucla.edu> | 2020-06-27 10:00:17 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2020-06-27 10:07:12 -0700 |
| commit | 118c07e02e939c9f52688091509d4bff2a897032 (patch) | |
| tree | fc04265957e147b8634091d34da5c0e80b88b8df /m4/getrandom.m4 | |
| parent | ffb89ed5f07491e33fc79d8b4be49d9deba2ad4a (diff) | |
| download | emacs-118c07e02e939c9f52688091509d4bff2a897032.tar.gz emacs-118c07e02e939c9f52688091509d4bff2a897032.tar.bz2 emacs-118c07e02e939c9f52688091509d4bff2a897032.zip | |
Update from Gnulib
This incorporates:
2020-06-27 getloadavg: don’t depend on fopen-gnu
2020-06-25 c-dtoastr, c-ldtoastr: new modules
2020-06-01 getloadavg: fix double-increment bug
2020-06-01 tempname: use getrandom, not getentropy
2020-05-31 tempname: merge from glibc and coreutils
2020-05-31 getentropy: work around a macOS and Solaris problem
2020-05-31 fnmatch: merge from glibc
2020-05-30 unistd: remove conflicting declaration of getrandom
2020-05-30 don't assume that UNICODE is not defined
2020-05-29 fix compilation error on native Windows
2020-05-28 avoid dynamic loading of Windows API functions when possible
2020-05-28 at-internal: make more robust in multithreaded applications
2020-05-28 getloadavg: make more robust in multithreaded applications
2020-05-27 getloadavg: make more robust in multithreaded applications
2020-05-26 count-one-bits: fix MSVC specific code
2020-05-25 getentropy, getrandom: new modules
2020-05-24 open, openat: really support O_CLOEXEC
2020-05-23 verify: document ‘assume’ better
2020-05-21 regex: configure better with "clang -fsanitize=leak"
2020-05-21 memmem: configure better with "clang -fsanitize=undefined"
2020-05-19 ftoastr: fix ifndef typo
* build-aux/config.guess, build-aux/config.sub, doc/misc/texinfo.tex:
* lib/count-one-bits.h, lib/ftoastr.c, lib/ftoastr.h:
* lib/getloadavg.c, lib/gettimeofday.c, lib/libc-config.h:
* lib/open.c, lib/openat-proc.c, lib/tempname.c, lib/tempname.h:
* lib/unistd.in.h, lib/verify.h, m4/memmem.m4, m4/regex.m4:
* m4/unistd_h.m4:
Update from Gnulib.
* lib/getrandom.c, lib/sys_random.in.h:
* m4/getrandom.m4, m4/sys_random_h.m4:
New files, copied from Gnulib.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
Diffstat (limited to 'm4/getrandom.m4')
| -rw-r--r-- | m4/getrandom.m4 | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/m4/getrandom.m4 b/m4/getrandom.m4 new file mode 100644 index 00000000000..37fb10023a0 --- /dev/null +++ b/m4/getrandom.m4 @@ -0,0 +1,64 @@ +# getrandom.m4 serial 5 +dnl Copyright 2020 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. + +dnl Written by Paul Eggert. + +AC_DEFUN([gl_FUNC_GETRANDOM], +[ + AC_REQUIRE([gl_SYS_RANDOM_H_DEFAULTS]) + AC_CHECK_FUNCS_ONCE([getrandom]) + if test "$ac_cv_func_getrandom" != yes; then + HAVE_GETRANDOM=0 + else + dnl On Solaris 11.4 the return type is 'int', not 'ssize_t'. + AC_CACHE_CHECK([whether getrandom is compatible with its GNU+BSD signature], + [gl_cv_func_getrandom_ok], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[/* Additional includes are needed before <sys/random.h> on Mac OS X. */ + #include <sys/types.h> + #include <stdlib.h> + #include <sys/random.h> + ssize_t getrandom (void *, size_t, unsigned int); + ]], + [[]]) + ], + [gl_cv_func_getrandom_ok=yes], + [gl_cv_func_getrandom_ok=no]) + ]) + if test $gl_cv_func_getrandom_ok = no; then + REPLACE_GETRANDOM=1 + fi + fi + + case "$host_os" in + mingw*) + AC_CACHE_CHECK([whether the bcrypt library is guaranteed to be present], + [gl_cv_lib_assume_bcrypt], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#include <windows.h>]], + [[#if !(_WIN32_WINNT >= _WIN32_WINNT_WIN7) + cannot assume it + #endif + ]]) + ], + [gl_cv_lib_assume_bcrypt=yes], + [gl_cv_lib_assume_bcrypt=no]) + ]) + if test $gl_cv_lib_assume_bcrypt = yes; then + AC_DEFINE([HAVE_LIB_BCRYPT], [1], + [Define to 1 if the bcrypt library is guaranteed to be present.]) + LIB_GETRANDOM='-lbcrypt' + else + LIB_GETRANDOM='-ladvapi32' + fi + ;; + *) + LIB_GETRANDOM= ;; + esac + AC_SUBST([LIB_GETRANDOM]) +]) |