diff --git a/aclocal.m4 b/aclocal.m4 deleted file mode 100644 index 43731c5..0000000 --- a/aclocal.m4 +++ /dev/null @@ -1,1365 +0,0 @@ -dnl Copyright (C) 1996, Memorial University of Newfoundland. -dnl This file is covered by the GNU General Public License, version 2, see -dnl the file misc/COPYING for details. -dnl -dnl This file is covered by the GPL 'cause it contains some modified versions -dnl of autoconf's macros, in particular: -dnl AC_FUNC_MMAP AC_LANG_C AC_LANG_CPLUXPLUS AC_TRY_RUN KSH_HEADER_SYS_WAIT -dnl AC_HEADER_STAT AC_PROG_CC -dnl -dnl -dnl Like AC_CHECK_TYPE(), only -dnl - user gets to specify header file(s) in addition to the default -dnl headers ( and ) -dnl - user gets to specify the message -dnl - word boundary checks are put at beginning/end of pattern -dnl (ie, \) -dnl - default argument is optional -dnl uses ac_cv_type_X 'cause this is used in other autoconf macros... -dnl KSH_CHECK_H_TYPE(type, message, header files, default) -AC_DEFUN(KSH_CHECK_H_TYPE, - [AC_CACHE_CHECK($2, ac_cv_type_$1, - [AC_EGREP_CPP([(^|[^a-zA-Z0-9_])]$1[([^a-zA-Z0-9_]|\$)], - [#include -#if STDC_HEADERS -#include -#endif -$3 - ], ac_cv_type_$1=yes, ac_cv_type_$1=no)]) - ifelse($#, 4, [if test $ac_cv_type_$1 = no; then - AC_DEFINE($1, $4) - fi - ])dnl - ])dnl -dnl -dnl -dnl -dnl Check for memmove and if not found, check for bcopy. AC_CHECK_FUNCS() -dnl not used 'cause it confuses some compilers that have memmove/bcopy builtin; -dnl Also want to check if the function deals with overlapping src/dst properly. -AC_DEFUN(KSH_MEMMOVE, - [AC_CACHE_CHECK(for working memmove, ksh_cv_func_memmove, - [AC_TRY_RUN([ -#ifdef HAVE_STRING_H -# include -#else -# include -#endif -#ifdef HAVE_MEMORY_H -# include -#endif - int - main() - { - char buf[16]; - strcpy(buf, "abcdefABCDEF"); - memmove(buf + 4, buf, 6); - if (strcmp(buf, "abcdabcdefEF")) - exit(1); - memmove(buf, buf + 4, 6); - if (strcmp(buf, "abcdefcdefEF")) - exit(2); - exit(0); - return 0; - }], - ksh_cv_func_memmove=yes, ksh_cv_func_memmove=no, - AC_MSG_WARN(assuming memmove broken); ksh_cv_func_memmove=no)]) - if test $ksh_cv_func_memmove = yes; then - AC_DEFINE(HAVE_MEMMOVE) - else - AC_CACHE_CHECK(for working bcopy, ksh_cv_func_bcopy, - [AC_TRY_RUN([ -#ifdef HAVE_STRING_H -# include -#else -# include -#endif -#ifdef HAVE_MEMORY_H -# include -#endif - int - main() - { - char buf[16]; - strcpy(buf, "abcdefABCDEF"); - bcopy(buf, buf + 4, 6); - if (strcmp(buf, "abcdabcdefEF")) - exit(1); - bcopy(buf + 4, buf, 6); - if (strcmp(buf, "abcdefcdefEF")) - exit(2); - exit(0); - }], - ksh_cv_func_bcopy=yes, ksh_cv_func_bcopy=no, - AC_MSG_WARN(assuming bcopy broken); ksh_cv_func_bcopy=no)]) - if test $ksh_cv_func_bcopy = yes; then - AC_DEFINE(HAVE_BCOPY) - fi - fi - ])dnl -dnl -dnl -dnl -dnl Check for sigsetjmp()/siglongjmp() and _setjmp()/_longjmp() pairs. -dnl Can't use simple library check as QNX 422 has _setjmp() but not _longjmp() -dnl (go figure). -AC_DEFUN(KSH_SETJMP, - [AC_CACHE_CHECK(for sigsetjmp()/siglongjmp(), ksh_cv_func_sigsetjmp, - [AC_TRY_LINK([], [sigsetjmp(); siglongjmp()], - ksh_cv_func_sigsetjmp=yes, ksh_cv_func_sigsetjmp=no)]) - if test $ksh_cv_func_sigsetjmp = yes; then - AC_DEFINE(HAVE_SIGSETJMP) - else - AC_CACHE_CHECK(for _setjmp()/_longjmp(), ksh_cv_func__setjmp, - [AC_TRY_LINK([], [_setjmp(); _longjmp();], - ksh_cv_func__setjmp=yes, ksh_cv_func__setjmp=no)]) - if test $ksh_cv_func__setjmp = yes; then - AC_DEFINE(HAVE__SETJMP) - fi - fi - ])dnl -dnl -dnl -dnl -dnl Check for memset function. AC_CHECK_FUNCS() not used 'cause it confuses -dnl some compilers that have memset builtin. -AC_DEFUN(KSH_MEMSET, - [AC_CACHE_CHECK(for memset, ksh_cv_func_memset, - [AC_TRY_LINK([ -#ifdef HAVE_STRING_H -# include -#else -# include -#endif -#ifdef HAVE_MEMORY_H -# include -#endif - ], [ - char buf[16]; memset(buf, 'x', 7); printf("%7s", buf);], - ksh_cv_func_memset=yes, ksh_cv_func_memset=no)]) - if test $ksh_cv_func_memset = yes; then - AC_DEFINE(HAVE_MEMSET) - fi - ])dnl -dnl -dnl -dnl -dnl Check for rlim_t in a few places, and if not found, figure out the -dnl size rlim_t should be by looking at struct rlimit.rlim_cur. -AC_DEFUN(KSH_RLIM_CHECK, - [KSH_CHECK_H_TYPE(rlim_t, for rlim_t in and , - [#ifdef HAVE_SYS_RESOURCE_H -#include -#endif])dnl - if test $ac_cv_type_rlim_t = no; then - AC_MSG_CHECKING(what to set rlim_t to) - if test $ac_cv_header_sys_resource_h = yes; then - AC_CACHE_VAL(ksh_cv_rlim_check, - [AC_TRY_RUN([ -#include -#include -#include - main() - { - struct rlimit rl; - if (sizeof(rl.rlim_cur) == sizeof(quad_t)) - exit(0); - exit(1); - } - ], ksh_cv_rlim_check=quad_t, ksh_cv_rlim_check=long, - AC_MSG_ERROR(cannot determine type for rlimt_t when cross compiling) - )])dnl - else - ksh_cv_rlim_check=long - fi - AC_MSG_RESULT($ksh_cv_rlim_check) - AC_DEFINE_UNQUOTED(rlim_t, $ksh_cv_rlim_check) - fi - ])dnl -dnl -dnl -dnl -AC_DEFUN(KSH_DEV_FD, - [AC_CACHE_CHECK(if you have /dev/fd/n, ksh_cv_dev_fd, - [AC_TRY_RUN([ -#include -#include -#include - main() - { - struct stat s1, s2; - FILE *fp1, *fp2; - char *file = "conftest.file"; - char devfd[32]; - - if (!(fp1 = fopen(file, "w"))) - exit(1); - if (fstat(fileno(fp1), &s1) < 0) - exit(2); - sprintf(devfd, "/dev/fd/%d", fileno(fp1)); - if (!(fp2 = fopen(devfd, "w"))) - exit(3); - if (fstat(fileno(fp2), &s2) < 0) - exit(4); - if (s1.st_dev != s2.st_dev || s1.st_ino != s2.st_ino) - exit(5); - exit(0); - } - ], ksh_cv_dev_fd=yes, ksh_cv_dev_fd=no, - AC_MSG_WARN(cannot determine if you have /dev/fd support, assuming not) - ksh_cv_dev_fd=no)]) - if test $ksh_cv_dev_fd = yes; then - AC_DEFINE(HAVE_DEV_FD) - fi - ])dnl -dnl -dnl -dnl -dnl Check for sys_siglist[] declaration and existence. -AC_DEFUN(KSH_SYS_SIGLIST, - [AC_DECL_SYS_SIGLIST - if test ac_cv_decl_sys_siglist = yes; then - AC_DEFINE(HAVE_SYS_SIGLIST) - else - AC_CACHE_CHECK(for sys_siglist in library, ksh_cv_var_sys_siglist, - [AC_TRY_LINK(, [ - extern char *sys_siglist[]; - char *p = sys_siglist[2]; - if (p) - return 12; - ], ksh_cv_var_sys_siglist=yes, ksh_cv_var_sys_siglist=no)]) - if test $ksh_cv_var_sys_siglist = yes; then - AC_DEFINE(HAVE_SYS_SIGLIST) - fi - fi - ])dnl -dnl -dnl -dnl -dnl Check for sys_errlist[] declaration and existence. -AC_DEFUN(KSH_SYS_ERRLIST, - [AC_CACHE_CHECK(for sys_errlist declaration in errno.h, ksh_cv_decl_sys_errlist, - [AC_TRY_COMPILE([#include ], - [char *msg = *(sys_errlist + 1); if (msg && *msg) return 12; ], - ksh_cv_decl_sys_errlist=yes, ksh_cv_decl_sys_errlist=no)]) - if test $ksh_cv_decl_sys_errlist = yes; then - AC_DEFINE(SYS_ERRLIST_DECLARED) - AC_DEFINE(HAVE_SYS_ERRLIST) - else - AC_CACHE_CHECK(for sys_errlist in library, ksh_cv_var_sys_errlist, - [AC_TRY_LINK(, [ - extern char *sys_errlist[]; - extern int sys_nerr; - char *p; - p = sys_errlist[sys_nerr - 1]; - if (p) return 12; - ], ksh_cv_var_sys_errlist=yes, ksh_cv_var_sys_errlist=no)]) - if test $ksh_cv_var_sys_errlist = yes; then - AC_DEFINE(HAVE_SYS_ERRLIST) - fi - fi - ])dnl -dnl -dnl -dnl -dnl Check if time() declared in time.h -AC_DEFUN(KSH_TIME_DECLARED, - [AC_CACHE_CHECK(time() declaration in time.h, ksh_cv_time_delcared, - [AC_TRY_COMPILE([#include -#include ], [time_t (*f)() = time; if (f) return 12;], - ksh_cv_time_delcared=yes, ksh_cv_time_delcared=no)]) - if test $ksh_cv_time_delcared = yes; then - AC_DEFINE(TIME_DECLARED) - fi - ])dnl -dnl -dnl -dnl -dnl Check for working times (ie, it exists and doesn't always return 0). -dnl Defines TIMES_BROKEN if it doesn't exist or if it always returns 0 -dnl (also checks for existance of getrusage if times doesn't work). -dnl XXX: requires clock_t to be typedefed/defined... -AC_DEFUN(KSH_TIMES_CHECK, - [AC_CACHE_CHECK(if times() is present/working, ksh_cv_func_times_ok, - [AC_TRY_RUN([ -#include -#include -/* if missing, clock_t is defined to be INT32 */ -#if SIZEOF_INT == 4 -# define INT32 int -#else /* SIZEOF_INT */ -# if SIZEOF_LONG == 4 -# define INT32 long -# else /* SIZEOF_LONG */ - #error cannot find 32 bit type... -# endif /* SIZEOF_LONG */ -#endif /* SIZEOF_INT */ - main() - { - extern clock_t times(); - struct tms tms; - times(&tms); - sleep(1); - if (times(&tms) == 0) - exit(1); - exit(0); - } - ], ksh_cv_func_times_ok=yes, ksh_cv_func_times_ok=no, - AC_MSG_ERROR(cannot determine if times works when cross compiling) - )]) - if test $ksh_cv_func_times_ok = no; then - AC_DEFINE(TIMES_BROKEN) - AC_CHECK_FUNCS(getrusage) - fi - ])dnl -dnl -dnl -dnl -AC_DEFUN(KSH_C_VOID, - [AC_CACHE_CHECK(if compiler understands void, ksh_cv_c_void, - [AC_TRY_COMPILE( - [ - void foo() { } - /* Some compilers (old pcc ones) like "void *a;", but a can't be used */ - void *bar(a) void *a; { int *b = (int *) a; *b = 1; return a; } - ], , ksh_cv_c_void=yes, ksh_cv_c_void=no)]) - if test $ksh_cv_c_void = yes; then - : - else - AC_DEFINE(void, char) - fi - ])dnl -dnl -dnl -dnl -dnl Early MIPS compilers (used in Ultrix 4.2) don't like -dnl "int x; int *volatile a = &x; *a = 0;" -AC_DEFUN(KSH_C_VOLATILE, - [AC_CACHE_CHECK(if compiler understands volatile, ksh_cv_c_volatile, - [AC_TRY_COMPILE([int x, y, z;], - [volatile int a; int * volatile b = x ? &y : &z; - /* Older MIPS compilers (eg., in Ultrix 4.2) don't like *b = 0 */ - *b = 0;], ksh_cv_c_volatile=yes, ksh_cv_c_volatile=no)]) - if test $ksh_cv_c_volatile = yes; then - : - else - AC_DEFINE(volatile, ) - fi - ])dnl -dnl -dnl -dnl -dnl Check if function prototypes work (including stdc vararg prototypes) -AC_DEFUN(KSH_C_PROTOTYPES, - [AC_CACHE_CHECK(if compiler understands prototypes, ksh_cv_c_prototypes, - [AC_TRY_COMPILE([ -#include -void foo(char *fmt, ...); -int bar(int a, char b, char *c); -int bar(a, b, c) int a; char b; char *c; -{ foo("%d%c%s\n", a, b, c); return a + b + *c; } -void foo(char *fmt, ...) { va_list a; va_start(a, fmt); va_end(a); } - ], , ksh_cv_c_prototypes=yes, ksh_cv_c_prototypes=no)]) - if test $ksh_cv_c_prototypes = yes; then - AC_DEFINE(HAVE_PROTOTYPES) - fi - ])dnl -dnl -dnl -dnl -dnl Check if C compiler understands gcc's __attribute((...)). -dnl checks for noreturn, const, and format(type,fmt,param), also checks -dnl that the compiler doesn't die when it sees an unknown attribute (this -dnl isn't perfect since gcc doesn't parse unknown attributes with parameters) -AC_DEFUN(KSH_C_FUNC_ATTR, - [AC_CACHE_CHECK(if C compiler groks __attribute__(( .. )), ksh_cv_c_func_attr, - [AC_TRY_COMPILE([ -#include -void test_fmt(char *fmt, ...) __attribute__((format(printf, 1, 2))); -void test_fmt(char *fmt, ...) { return; } -int test_cnst(int) __attribute__((const)); -int test_cnst(int x) { return x + 1; } -void test_nr() __attribute__((noreturn)); -void test_nr() { exit(1); } -void test_uk() __attribute__((blah)); -void test_uk() { return; } - ], [test_nr("%d", 10); test_cnst(2); test_uk(); test_nr(); ], - ksh_cv_c_func_attr=yes, ksh_cv_c_func_attr=no)]) - if test $ksh_cv_c_func_attr = yes; then - AC_DEFINE(HAVE_GCC_FUNC_ATTR) - fi - ])dnl -dnl -dnl -dnl -dnl Check if dup2() does not clear the close on exec flag -AC_DEFUN(KSH_DUP2_CLEXEC_CHECK, - [AC_CACHE_CHECK([if dup2() works (ie, resets the close-on-exec flag)], ksh_cv_dup2_clexec_ok, - [AC_TRY_RUN([ -#include -#ifdef HAVE_FCNTL_H -# include -#endif /* HAVE_FCNTL_H */ -#ifndef F_GETFD -# define F_GETFD 1 -#endif -#ifndef F_SETFD -# define F_SETFD 2 -#endif -#ifndef O_RDONLY -# define O_RDONLY 0 -#endif -/* On some systems (Ultrix 2.1..4.2 (and more?)), dup2() does not clear - the close on exec flag */ -main() -{ - int fd1, fd2; - fd1 = open("/dev/null", O_RDONLY); - if (fcntl(fd1, F_SETFD, 1) < 0) - exit(1); - fd2 = dup2(fd1, fd1 + 1); - if (fd2 < 0) - exit(2); - exit(fcntl(fd2, F_GETFD, 0) == 0 ? 0 : 3); -} - ], ksh_cv_dup2_clexec_ok=yes, ksh_cv_dup2_clexec_ok=no, - AC_MSG_WARN(cannot test if dup2 is broken when cross compiling - assuming it is) - ksh_cv_dup2_clexec_ok=no)]) - if test $ksh_cv_dup2_clexec_ok = no; then - AC_DEFINE(DUP2_BROKEN) - fi - ])dnl -dnl -dnl -dnl -dnl Check type of signal routines (posix, 4.2bsd, 4.1bsd or v7) -AC_DEFUN(KSH_SIGNAL_CHECK, - [AC_CACHE_CHECK(flavour of signal routines, ksh_cv_signal_check, - [AC_TRY_LINK([#include ], [ - sigset_t ss; - struct sigaction sa; - sigemptyset(&ss); sigsuspend(&ss); - sigaction(SIGINT, &sa, (struct sigaction *) 0); - sigprocmask(SIG_BLOCK, &ss, (sigset_t *) 0); - ], ksh_cv_signal_check=posix, - AC_TRY_LINK([#include ], [ - int mask = sigmask(SIGINT); - sigsetmask(mask); sigblock(mask); sigpause(mask); - ], ksh_cv_signal_check=bsd42, - AC_TRY_LINK([#include - RETSIGTYPE foo() { }], - [ - int mask = sigmask(SIGINT); - sigset(SIGINT, foo); sigrelse(SIGINT); - sighold(SIGINT); sigpause(SIGINT); - ], ksh_cv_signal_check=bsd41, ksh_cv_signal_check=v7)))]) - if test $ksh_cv_signal_check = posix; then - AC_DEFINE(POSIX_SIGNALS) - else - AC_DEFINE(USE_FAKE_SIGACT) - if test $ksh_cv_signal_check = bsd42; then - AC_DEFINE(BSD42_SIGNALS) - elif test $ksh_cv_signal_check = bsd41; then - AC_DEFINE(BSD41_SIGNALS) - AC_CACHE_CHECK(if signals interrupt read(), ksh_cv_signals_interrupt, - [AC_TRY_RUN([ -#include -#include - - extern int errno; - int flag = 0; - - RETSIGTYPE - catcher(int sig) - { - flag = 1; - return RETSIGVAL; - } - - int - main() - { - int pid; - int fdc[2]; /* child writes to parent */ - int fdp[2]; /* parent writes to child */ - char buf; - int nread; - - if (pipe(fdc) < 0) - exit(1); - if (pipe(fdp) < 0) - exit(2); - if ((pid = fork()) < 0) - exit(3); - if (pid == 0) { - close(fdc[0]); - close(fdp[1]); - if (read(fdp[0], &buf, 1) != 0) - exit(10); - sleep(1); /* let parent into read */ - if (kill(getppid(), SIGALRM) < 0) - exit(11); - sleep(1); /* ensure parent gets to run */ - write(fdc[1], "1", 1); - close(fdc[1]); - exit(0); - } - close(fdc[1]); - close(fdp[0]); - - /* Use native routines for test as this is what the shell - * will be using... - */ -#ifdef POSIX_SIGNALS - { - struct sigaction sa, osa; - sa.sa_handler = catcher; - sigemptyset(&sa.sa_mask); - sa.sa_flags = 0; - sigaction(SIGALRM, &sa, &osa); - } -#else /* POSIX_SIGNALS */ -# ifdef BSD42_SIGNALS - { - struct sigvec vec, ovec; - vec.sv_handler = catcher; - vec.sv_mask = 0; - vec.sv_flags = 0; -# ifdef SV_INTERRUPT - vec.sv_flags |= SV_INTERRUPT; -# endif /* SV_INTERRUPT */ - sigvec(SIGALRM, &vec, &ovec); - } -# else /* BSD42_SIGNALS */ -# ifdef BSD41_SIGNALS - sigset(SIGALRM, catcher); -# else /* BSD41_SIGNALS */ -# ifdef V7_SIGNALS - signal(SIGALRM, catcher); -# else /* V7_SIGNALS */ - what kind of signals do you have? -# endif /* V7_SIGNALS */ -# endif /* BSD41_SIGNALS */ -# endif /* BSD42_SIGNALS */ -#endif /* POSIX_SIGNALS */ - close(fdp[1]); /* start child */ - nread = read(fdc[0], &buf, 1); - if (nread == 0) - exit(4); - if (nread > 0) - exit(5); - if (errno != EINTR) - exit(6); - if (!flag) - exit(7); - exit(0); - return 0; - } - ], ksh_cv_signals_interrupt=yes, ksh_cv_signals_interrupt=no, - AC_MSG_ERROR(cannot determine if signals interrupt read() when cross compiling) - )]) - if test $ksh_cv_signals_interrupt = no ; then - AC_DEFINE(SIGNALS_DONT_INTERRUPT) - fi - else - AC_DEFINE(V7_SIGNALS) - fi - fi - ])dnl -dnl -dnl -dnl -dnl What kind of process groups: POSIX, BSD, SYSV or none -dnl BSD uses setpgrp(pid, pgrp), getpgrp(pid) -dnl POSIX uses setpid(pid, pgrp), getpgrp(void) -dnl SYSV uses setpgrp(void), getpgrp(void) -dnl Checks for BSD first since the posix test may succeed on BSDish systems -dnl (depends on what random value gets passed to getpgrp()). -AC_DEFUN(KSH_PGRP_CHECK, - [AC_CACHE_CHECK(flavour of pgrp routines, ksh_cv_pgrp_check, - [AC_TRY_RUN([ -/* Check for BSD process groups */ -#include -#ifdef HAVE_UNISTD_H -# include -#endif /* HAVE_UNISTD_H */ - main() - { - int ecode = 0, child = fork(); - if (child < 0) - exit(1); - if (child == 0) { - signal(SIGTERM, SIG_DFL); /* just to make sure */ - sleep(10); - exit(9); - } - if (setpgrp(child, child) < 0) - ecode = 2; - else if (getpgrp(child) != child) - ecode = 3; - kill(child, SIGTERM); - exit(ecode); - } - ], ksh_cv_pgrp_check=bsd, - [AC_TRY_RUN([ -/* Check for POSIX process groups */ -#ifdef HAVE_UNISTD_H -# include -#endif /* HAVE_UNISTD_H */ - main() - { - int child; - int n, p1[2], p2[2]; - char buf[1]; - if (pipe(p1) < 0 || pipe(p2) < 0) - exit(1); - if ((child = fork()) < 0) - exit(2); - if (child == 0) { - n = read(p1[0], buf, sizeof(buf)); /* wait for parent to setpgid */ - buf[0] = (n != 1 ? 10 : (getpgrp() != getpid() ? 11 : 0)); - if (write(p2[1], buf, sizeof(buf)) != 1) - exit(12); - exit(0); - } - if (setpgid(child, child) < 0) - exit(3); - if (write(p1[1], buf, 1) != 1) - exit(4); - if (read(p2[0], buf, 1) != 1) - exit(5); - exit((int) buf[0]); - } - ], ksh_cv_pgrp_check=posix, - [AC_TRY_RUN([ -/* Check for SYSV process groups */ -#ifdef HAVE_UNISTD_H -# include -#endif /* HAVE_UNISTD_H */ - main() - { - int child; - int n, p[2]; - char buf[1]; - if (pipe(p) < 0) - exit(1); - if ((child = fork()) < 0) - exit(2); - if (child == 0) { - buf[0] = (setpgrp() < 0 ? 10 : (getpgrp() != getpid() ? 11 : 0)); - if (write(p[1], buf, sizeof(buf)) != 1) - exit(11); - exit(0); - } - if (read(p[0], buf, 1) != 1) - exit(3); - exit((int) buf[0]); - } - ], ksh_cv_pgrp_check=sysv, ksh_cv_pgrp_check=none, - AC_MSG_ERROR(cannot taste pgrp routines when cross compiling))], - AC_MSG_ERROR(cannot taste pgrp routines when cross compiling))], - AC_MSG_ERROR(cannot taste pgrp routines when cross compiling))]) - if test $ksh_cv_pgrp_check = bsd; then - AC_DEFINE(BSD_PGRP) - elif test $ksh_cv_pgrp_check = posix; then - AC_DEFINE(POSIX_PGRP) - elif test $ksh_cv_pgrp_check = sysv; then - AC_DEFINE(SYSV_PGRP) - else - AC_DEFINE(NO_PGRP) - fi - ])dnl -dnl -dnl -dnl -dnl Check if the pgrp of setpgrp() can't be the pid of a zombie process. -dnl On some systems, the kernel doesn't count zombie processes when checking -dnl if a process group is valid, which can cause problems in creating the -dnl pipeline "cmd1 | cmd2": if cmd1 can die (and go into the zombie state) -dnl before cmd2 is started, the kernel doesn't allow the setpgrp() for cmd2 -dnl to succeed. This test defines NEED_PGRP_SYNC if the kernel has this bug. -dnl (pgrp_sync test doesn't mean much if don't have bsd or posix pgrps) -AC_DEFUN(KSH_PGRP_SYNC, - [AC_REQUIRE([KSH_PGRP_CHECK])dnl - if test $ksh_cv_pgrp_check = bsd || test $ksh_cv_pgrp_check = posix ; then - AC_CACHE_CHECK(if process group synchronization is required, ksh_cv_need_pgrp_sync, - [AC_TRY_RUN([ - main() - { -#ifdef POSIX_PGRP -# define getpgID() getpgrp() -#else -# define getpgID() getpgrp(0) -# define setpgid(x,y) setpgrp(x,y) -#endif - int pid1, pid2, fds[2]; - int status; - char ok; - switch (pid1 = fork()) { - case -1: - exit(1); - case 0: - setpgid(0, getpid()); - exit(0); - } - setpgid(pid1, pid1); - sleep(2); /* let first child die */ - if (pipe(fds) < 0) - exit(2); - switch (pid2 = fork()) { - case -1: - exit(3); - case 0: - setpgid(0, pid1); - ok = getpgID() == pid1; - write(fds[1], &ok, 1); - exit(0); - } - setpgid(pid2, pid1); - close(fds[1]); - if (read(fds[0], &ok, 1) != 1) - exit(4); - wait(&status); - wait(&status); - exit(ok ? 0 : 5); - } - ], ksh_cv_need_pgrp_sync=no, ksh_cv_need_pgrp_sync=yes, - AC_MSG_WARN(cannot test if pgrp synchronization needed when cross compiling - assuming it is) - ksh_cv_need_pgrp_sync=yes)]) - if test $ksh_cv_need_pgrp_sync = yes; then - AC_DEFINE(NEED_PGRP_SYNC) - fi - fi - ])dnl -dnl -dnl -dnl -dnl Check to see if opendir will open non-directories (not a nice thing) -AC_DEFUN(KSH_OPENDIR_CHECK, - [AC_CACHE_CHECK(if opendir() fails to open non-directories, ksh_cv_opendir_ok, - [AC_TRY_RUN([ -#include -#include -#ifdef HAVE_UNISTD_H -# include -#endif /* HAVE_UNISTD_H */ -#if defined(HAVE_DIRENT_H) -# include -#else -# define dirent direct -# ifdef SYSNDIR -# include -# endif /* SYSNDIR */ -# ifdef SYSDIR -# include -# endif /* SYSDIR */ -# ifdef NDIR -# include -# endif /* NDIR */ -#endif /* DIRENT */ - main() - { - int i, ret = 0; - FILE *fp; - char *fname = "conftestod", buf[256]; - for (i = 0; i < sizeof(buf); i++) /* memset(buf, 0, sizeof(buf)) */ - buf[i] = 0; - unlink(fname); /* paranoia */ - i = ((fp = fopen(fname, "w")) == (FILE *) 0 && (ret = 1)) - || (fwrite(buf, sizeof(buf), 1, fp) != 1 && (ret = 2)) - || (fclose(fp) == EOF && (ret = 3)) - || (opendir(fname) && (ret = 4)) - || (opendir("/dev/null") && (ret = 5)); - unlink(fname); - exit(ret); - } - ], ksh_cv_opendir_ok=yes, ksh_cv_opendir_ok=no, - AC_MSG_WARN(cannot test if opendir opens non-directories when cross compiling - assuming it does) - ksh_cv_opendir_ok=no)]) - if test $ksh_cv_opendir_ok = no; then - AC_DEFINE(OPENDIR_DOES_NONDIR) - fi - ])dnl -dnl -dnl -dnl -dnl Like AC_HAVE_HEADER(unistd.h) but only defines HAVE_UNISTD_H if -dnl the header file is sane (MIPS RISC/os 5.0 (and later?) has a unistd.h -dnl in the bsd43 environ that is incorrect - it defines POSIX_VERSION even -dnl though its non-posix). -AC_DEFUN(KSH_UNISTD_H, - [AC_CACHE_CHECK(for sane unistd.h, ksh_cv_header_unistd, - [AC_TRY_COMPILE([ -#include -#if defined(_POSIX_VERSION) -# include -# include /* _POSIX_VERSION => HAVE_DIRENT_H test not needed */ -#endif - ], , ksh_cv_header_unistd=yes, ksh_cv_header_unistd=no)]) - if test $ksh_cv_header_unistd = yes; then - AC_DEFINE(HAVE_UNISTD_H) - fi - ])dnl -dnl -dnl -dnl -dnl Several OSes need to be detected and symbols defined so the shell can -dnl deal with them. This is a bit kludgy, but... -dnl Currently tests for: -dnl AIX, ISC (Interactive systems corp), MINIX, OS2 using EMX library, -dnl SCO (santa cruz operation), NEXT -dnl DO NOT USE with AC_AIX, AC_MINIX or AC_ISC_POSIX tests as these are -dnl incorperated in this test. -AC_DEFUN(KSH_OS_TYPE, - [AC_BEFORE([$0], [AC_TRY_COMPILE])dnl - AC_BEFORE([$0], [AC_TRY_LINK])dnl - AC_BEFORE([$0], [AC_TRY_RUN])dnl - AC_CACHE_CHECK(if this is a problematic os, ksh_cv_os_type, - [ ksh_cv_os_type=no - # Some tests below add -C to CPPFLAGS - saveCPPFLAGS="$CPPFLAGS" - for i in AIX ISC MINIX SCO OS2_EMX TITANOS NEXT HPUX; do - case $i in #(( - AIX) - AC_EGREP_CPP(yes, - [ -#ifdef _AIX -yes -#endif - ], ksh_cv_os_type=$i) - ;; #( - ISC) - # Both native ISC cpp and gcc understand this (leave comments in) - CPPFLAGS="$CPPFLAGS -C" - #XXX grep part won't work if cross-compiling... - AC_EGREP_CPP(INTERACTIVE Systems Corporation, - [#include ], - [if grep _POSIX_VERSION /usr/include/sys/unistd.h > /dev/null 2>&1; then - ksh_cv_os_type="$i-posix" - else - ksh_cv_os_type=$i - fi])dnl - CPPFLAGS="$saveCPPFLAGS" - ;; #( - MINIX) - AC_CHECK_HEADER(minix/config.h, ksh_cv_os_type=$i)dnl - ;; #( - SCO) - # Both native SCO cpp and gcc understand this (leave comments in) - CPPFLAGS="$CPPFLAGS -C" - AC_EGREP_CPP(The Santa Cruz Operation, - [#include ], ksh_cv_os_type=$i)dnl - CPPFLAGS="$saveCPPFLAGS" - ;; #( - OS2_EMX) - AC_EGREP_CPP(yes, - [ -#ifdef __EMX__ -yes -#endif - ], ksh_cv_os_type=$i)dnl - ;; #( - TITANOS) - AC_EGREP_CPP(YesTitan, - [ -#if defined(titan) || defined(_titan) || defined(__titan) -YesTitan -#endif - ], ksh_cv_os_type=$i)dnl - ;; #( - NEXT) - # - # NeXT 3.2 (other versions?) - cc -E doesn't work and /lib/cpp - # doesn't define things that need defining, so tests that rely - # on $CPP will break. - # - # Hmmm - can't safely use CPP to test for NeXT defines, so have - # to use a program that won't compile on a NeXT and one that will - # only compile on a NeXT... - AC_TRY_COMPILE([], [ - #if defined(__NeXT) || defined(NeXT) - this is a NeXT box and the compile should fail - #endif - ], , AC_TRY_COMPILE([], [ - #if !defined(__NeXT) && !defined(NeXT) - this is NOT a NeXT box and the compile should fail - #endif - ], ksh_cv_os_type=$i))dnl - ;; #( - HPUX) - AC_EGREP_CPP(yes, - [ -#ifdef __hpux -yes -#endif - ], ksh_cv_os_type=$i) - ;; #( - esac #)) - test $ksh_cv_os_type != no && break - done - ]) - case $ksh_cv_os_type in #(( - AIX) - AC_DEFINE(_ALL_SOURCE)dnl - ;; #( - ISC) - AC_DEFINE(OS_ISC)dnl - ;; #( - ISC-posix) - AC_DEFINE(OS_ISC)dnl - AC_DEFINE(_POSIX_SOURCE)dnl - if test "$GCC" = yes; then - CC="$CC -posix" - else - CC="$CC -Xp" - fi - ;; #( - MINIX) - AC_DEFINE(_POSIX_SOURCE)dnl - AC_DEFINE(_POSIX_1_SOURCE, 2)dnl - AC_DEFINE(_MINIX)dnl - ;; #( - SCO) - AC_DEFINE(OS_SCO)dnl - ;; #( - OS2_EMX) - # XXX change this to OS_OS2 or OS_OS2_EMX? - AC_DEFINE(OS2)dnl - ac_exe_suffix=.exe - ;; #( - TITANOS) - # Need to use cc -43 to get a shell with job control - case "$CC" in #(( - *-43*) # Already have -43 option? - ;; #( - */cc|*/cc' '|*/cc' '|cc|cc' '|cc' ') # Using stock compiler? - CC="$CC -43" - ;; #( - esac #)) - # - # Force dirent check to find the right thing. There is a dirent.h - # (and a sys/dirent.h) file which compiles, but generates garbage... - # - ac_cv_header_dirent_dirent_h=no - ac_cv_header_dirent_sys_ndir_h=no - ac_cv_header_dirent_sys_dir_h=yes - ;; #( - NEXT) - # - # NeXT 3.2 (other versions?) - cc -E doesn't work and /lib/cpp - # doesn't define things that need defining, so tests that rely - # on $CPP will break. - # - AC_EGREP_CPP([Bad NeXT], [#include - #if !defined(SIGINT) || !defined(SIGQUIT) - Bad NeXT - #endif - ], AC_MSG_ERROR([ -There is a problem on NeXT boxes resulting in a bad siglist.out file being -generated (which breaks the trap and kill commands) and probably resulting -in many configuration tests not working correctly. - -You appear to have this problem - see the comments on NeXT in the pdksh -README file for work arounds.]))dnl - ;; #( - HPUX) - # - # In some versions of hpux (eg, 10.2), getwd & getcwd will dump core - # if directory is not readble. - # - # name is used in test program - AC_CACHE_CHECK(for bug in getwd, ksh_cv_hpux_getwd_bug, - [ tmpdir=conftest.dir - if mkdir $tmpdir ; then - AC_TRY_RUN([ - int - main() - { - char buf[8 * 1024]; - char *dirname = "conftest.dir"; - int ok = 0; - if (chdir(dirname) < 0) - exit(2); - if (chmod(".", 0) < 0) - exit(3); - /* Test won't work if run as root - so don't be root */ - if (getuid() == 0 || geteuid() == 0) - setresuid(1, 1, 1); /* hpux has this */ -#ifdef HAVE_GETWD /* silly since HAVE_* tests haven't been done yet */ - { - extern char *getwd(); - ok = getwd(buf) == 0; - } -#else - { - extern char *getcwd(); - ok = getcwd(buf, sizeof(buf)) == 0; - } -#endif - exit(ok ? 0 : 10); - return ok ? 0 : 10; - }], - ksh_cv_hpux_getwd_bug=no, ksh_cv_hpux_getwd_bug=yes, - AC_MSG_WARN(assuming getwd broken); ksh_cv_hpux_getwd_bug=yes) - test -d $tmpdir && rmdir $tmpdir - else - AC_MSG_ERROR(could not make temp directory for test); ksh_cv_hpux_getwd_bug=yes - fi]) - if test $ksh_cv_hpux_getwd_bug = yes; then - AC_DEFINE(HPUX_GETWD_BUG) - fi - ;; #( - esac #)) - ])dnl -dnl -dnl -dnl -dnl Some systems (eg, SunOS 4.0.3) have and but don't -dnl have the related functions/defines (eg, tcsetattr(), TCSADRAIN, etc.) -dnl or the functions don't work well with tty process groups. Sun's bad -dnl termios can be detected by the lack of tcsetattr(), but its bad termio -dnl is harder to detect - so check for (sane) termios first, then check for -dnl BSD, then termio. -AC_DEFUN(KSH_TERM_CHECK, - [AC_CACHE_CHECK(terminal interface, ksh_cv_term_check, - [AC_TRY_LINK([#include ], [ - struct termios t; -#if defined(ultrix) || defined(__ultrix__) - Termios in ultrix 4.2 botches type-ahead when going from cooked to - cbreak mode. The BSD tty interface works fine though, so use it - (would be good to know if alter versions of ultrix work). -#endif /* ultrix */ - tcgetattr(0, &t); tcsetattr(0, TCSADRAIN, &t); - ], ksh_cv_term_check=termios, - [AC_TRY_LINK([#include ], [ - struct sgttyb sb; ioctl(0, TIOCGETP, &sb); -#ifdef TIOCGATC - { struct ttychars lc; ioctl(0, TIOCGATC, &lc); } -#else /* TIOCGATC */ - { struct tchars tc; ioctl(0, TIOCGETC, &tc); } -# ifdef TIOCGLTC - { struct ltchars ltc; ioctl(0, TIOCGLTC, <c); } -# endif /* TIOCGLTC */ -#endif /* TIOCGATC */ - ], ksh_cv_term_check=bsd, - [AC_CHECK_HEADER(termio.h, ksh_cv_term_check=termio, - ksh_cv_term_check=sgtty)])])]) - if test $ksh_cv_term_check = termios; then - AC_DEFINE(HAVE_TERMIOS_H) -dnl Don't know of a system on which this fails... -dnl AC_CACHE_CHECK(sys/ioctl.h can be included with termios.h, -dnl ksh_cv_sys_ioctl_with_termios, -dnl [AC_TRY_COMPILE([#include -dnl #include ], , ksh_cv_sys_ioctl_with_termios=yes, -dnl ksh_cv_sys_ioctl_with_termios=no)]) -dnl if test $ksh_cv_sys_ioctl_with_termios = yes; then -dnl AC_DEFINE(SYS_IOCTL_WITH_TERMIOS) -dnl fi - elif test $ksh_cv_term_check = termio; then - AC_DEFINE(HAVE_TERMIO_H) -dnl Don't know of a system on which this fails... -dnl AC_CACHE_CHECK(sys/ioctl.h can be included with termio.h, -dnl ksh_cv_sys_ioctl_with_termio, -dnl [AC_TRY_COMPILE([#include -dnl #include ], , ksh_cv_sys_ioctl_with_termio=yes, -dnl ksh_cv_sys_ioctl_with_termio=no)]) -dnl if test $ksh_cv_sys_ioctl_with_termio = yes; then -dnl AC_DEFINE(SYS_IOCTL_WITH_TERMIO) -dnl fi - fi - ])dnl -dnl -dnl -dnl -dnl Check if lstat() is available - special test needed 'cause lstat only -dnl becomes visable if is included (linux 1.3.x)... -AC_DEFUN(KSH_FUNC_LSTAT, -[AC_CACHE_CHECK(for lstat, ksh_cv_func_lstat, -[AC_TRY_LINK([ -#include -#include - ], [ - struct stat statb; - lstat("/", &statb); - ], - ksh_cv_func_lstat=yes, ksh_cv_func_lstat=no)]) -if test $ksh_cv_func_lstat = yes; then - AC_DEFINE(HAVE_LSTAT) -fi -]) -dnl -dnl -dnl -dnl Modified test from autoconf's acspecific.m4: MMAP test needs to check -dnl for/use the MAP_FILE flag. 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