#serial 8 -*- autoconf -*- dnl From Jim Meyering. dnl dnl See if the glibc *_unlocked I/O macros or functions are available. dnl Use only those *_unlocked macros or functions that are declared dnl (because some of them were declared in Solaris 2.5.1 but were removed dnl in Solaris 2.6, whereas we want binaries built on Solaris 2.5.1 to run dnl on Solaris 2.6). AC_DEFUN([jm_FUNC_GLIBC_UNLOCKED_IO], [ dnl Persuade glibc and Solaris to declare dnl fgets_unlocked(), fputs_unlocked() etc. AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_CHECK_DECLS_ONCE( [clearerr_unlocked feof_unlocked ferror_unlocked fflush_unlocked fgets_unlocked fputc_unlocked fputs_unlocked fread_unlocked fwrite_unlocked getc_unlocked getchar_unlocked putc_unlocked putchar_unlocked]) ])