--- /dev/null
+dnl On the NeXT, #including <utime.h> doesn't give you a definition for
+dnl struct utime, unless you #define _POSIX_SOURCE.
+
+AC_DEFUN([GUILE_STRUCT_UTIMBUF], [
+ AC_CACHE_CHECK([whether we need POSIX to get struct utimbuf],
+ guile_cv_struct_utimbuf_needs_posix,
+ [AC_TRY_CPP([
+#ifdef __EMX__
+#include <sys/utime.h>
+#else
+#include <utime.h>
+#endif
+struct utime blah;
+],
+ guile_cv_struct_utimbuf_needs_posix=no,
+ guile_cv_struct_utimbuf_needs_posix=yes)])
+ if test "$guile_cv_struct_utimbuf_needs_posix" = yes; then
+ AC_DEFINE([UTIMBUF_NEEDS_POSIX], 1,
+ [Define this if <utime.h> doesn't define struct utimbuf unless
+ _POSIX_SOURCE is defined. See GUILE_STRUCT_UTIMBUF in aclocal.m4.])
+ fi])
+
+
+
+
+dnl
+dnl Apparently, at CMU they have a weird version of libc.h that is
+dnl installed in /usr/local/include and conflicts with unistd.h.
+dnl In these situations, we should not #include libc.h.
+dnl This test arranges to #define LIBC_H_WITH_UNISTD_H iff libc.h is
+dnl present on the system, and is safe to #include.
+dnl
+AC_DEFUN([GUILE_HEADER_LIBC_WITH_UNISTD],
+ [
+ AC_CHECK_HEADERS(libc.h unistd.h)
+ AC_CACHE_CHECK(
+ [whether libc.h and unistd.h can be included together],
+ guile_cv_header_libc_with_unistd,
+ [
+ if test "$ac_cv_header_libc_h" = "no"; then
+ guile_cv_header_libc_with_unistd="no"
+ elif test "$ac_cv_header_unistd_h" = "no"; then
+ guile_cv_header_libc_with_unistd="yes"
+ else
+ AC_TRY_COMPILE(
+ [
+# include <libc.h>
+# include <unistd.h>
+ ],
+ [],
+ [guile_cv_header_libc_with_unistd=yes],
+ [guile_cv_header_libc_with_unistd=no]
+ )
+ fi
+ ]
+ )
+ if test "$guile_cv_header_libc_with_unistd" = yes; then
+ AC_DEFINE(LIBC_H_WITH_UNISTD_H, 1,
+ [Define this if we should include <libc.h> when we've already
+ included <unistd.h>. On some systems, they conflict, and libc.h
+ should be omitted. See GUILE_HEADER_LIBC_WITH_UNISTD in
+ aclocal.m4.])
+ fi
+ ]
+)
+
+
+
+dnl This is needed when we want to check for the same function repeatedly
+dnl with other parameters, such as libraries, varying.
+dnl
+dnl GUILE_NAMED_CHECK_FUNC(FUNCTION, TESTNAME,
+dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+AC_DEFUN([GUILE_NAMED_CHECK_FUNC],
+[AC_MSG_CHECKING([for $1])
+AC_CACHE_VAL(ac_cv_func_$1_$2,
+[AC_TRY_LINK(
+dnl Don't include <ctype.h> because on OSF/1 3.0 it includes <sys/types.h>
+dnl which includes <sys/select.h> which contains a prototype for
+dnl select. Similarly for bzero.
+[/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $1(); below. */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error. */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char $1();
+], [
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined (__stub_$1) || defined (__stub___$1)
+choke me
+#else
+$1();
+#endif
+], eval "ac_cv_func_$1_$2=yes", eval "ac_cv_func_$1_$2=no")])
+if eval "test \"`echo '$ac_cv_func_'$1'_'$2`\" = yes"; then
+ AC_MSG_RESULT(yes)
+ ifelse([$3], , :, [$3])
+else
+ AC_MSG_RESULT(no)
+ifelse([$4], , , [$4
+])dnl
+fi
+])
+
+
+
+
+dnl Available from the Autoconf Macro Archive at:
+dnl http://autoconf-archive.cryp.to/acx_pthread.html
+dnl
+AC_DEFUN([ACX_PTHREAD], [
+AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_SAVE
+AC_LANG_C
+acx_pthread_ok=no
+
+# We used to check for pthread.h first, but this fails if pthread.h
+# requires special compiler flags (e.g. on True64 or Sequent).
+# It gets checked for in the link test anyway.
+
+# First of all, check if the user has set any of the PTHREAD_LIBS,
+# etcetera environment variables, and if threads linking works using
+# them:
+if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+ save_LIBS="$LIBS"
+ LIBS="$PTHREAD_LIBS $LIBS"
+ AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
+ AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
+ AC_MSG_RESULT($acx_pthread_ok)
+ if test x"$acx_pthread_ok" = xno; then
+ PTHREAD_LIBS=""
+ PTHREAD_CFLAGS=""
+ fi
+ LIBS="$save_LIBS"
+ CFLAGS="$save_CFLAGS"
+fi
+
+# We must check for the threads library under a number of different
+# names; the ordering is very important because some systems
+# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
+# libraries is broken (non-POSIX).
+
+# Create a list of thread flags to try. Items starting with a "-" are
+# C compiler flags, and other items are library names, except for "none"
+# which indicates that we try without any flags at all, and "pthread-config"
+# which is a program returning the flags for the Pth emulation library.
+
+acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+
+# The ordering *is* (sometimes) important. Some notes on the
+# individual items follow:
+
+# pthreads: AIX (must check this before -lpthread)
+# none: in case threads are in libc; should be tried before -Kthread and
+# other compiler flags to prevent continual compiler warnings
+# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
+# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
+# -pthreads: Solaris/gcc
+# -mthreads: Mingw32/gcc, Lynx/gcc
+# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
+# doesn't hurt to check since this sometimes defines pthreads too;
+# also defines -D_REENTRANT)
+# ... -mt is also the pthreads flag for HP/aCC
+# pthread: Linux, etcetera
+# --thread-safe: KAI C++
+# pthread-config: use pthread-config program (for GNU Pth library)
+
+case "${host_cpu}-${host_os}" in
+ *solaris*)
+
+ # On Solaris (at least, for some versions), libc contains stubbed
+ # (non-functional) versions of the pthreads routines, so link-based
+ # tests will erroneously succeed. (We need to link with -pthreads/-mt/
+ # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
+ # a function called by this macro, so we could check for that, but
+ # who knows whether they'll stub that too in a future libc.) So,
+ # we'll just look for -pthreads and -lpthread first:
+
+ acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
+ ;;
+esac
+
+if test x"$acx_pthread_ok" = xno; then
+for flag in $acx_pthread_flags; do
+
+ case $flag in
+ none)
+ AC_MSG_CHECKING([whether pthreads work without any flags])
+ ;;
+
+ -*)
+ AC_MSG_CHECKING([whether pthreads work with $flag])
+ PTHREAD_CFLAGS="$flag"
+ ;;
+
+ pthread-config)
+ AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
+ if test x"$acx_pthread_config" = xno; then continue; fi
+ PTHREAD_CFLAGS="`pthread-config --cflags`"
+ PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
+ ;;
+
+ *)
+ AC_MSG_CHECKING([for the pthreads library -l$flag])
+ PTHREAD_LIBS="-l$flag"
+ ;;
+ esac
+
+ save_LIBS="$LIBS"
+ save_CFLAGS="$CFLAGS"
+ LIBS="$PTHREAD_LIBS $LIBS"
+ CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+ # Check for various functions. We must include pthread.h,
+ # since some functions may be macros. (On the Sequent, we
+ # need a special flag -Kthread to make this header compile.)
+ # We check for pthread_join because it is in -lpthread on IRIX
+ # while pthread_create is in libc. We check for pthread_attr_init
+ # due to DEC craziness with -lpthreads. We check for
+ # pthread_cleanup_push because it is one of the few pthread
+ # functions on Solaris that doesn't have a non-functional libc stub.
+ # We try pthread_create on general principles.
+ AC_TRY_LINK([#include <pthread.h>],
+ [pthread_t th; pthread_join(th, 0);
+ pthread_attr_init(0); pthread_cleanup_push(0, 0);
+ pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
+ [acx_pthread_ok=yes])
+
+ LIBS="$save_LIBS"
+ CFLAGS="$save_CFLAGS"
+
+ AC_MSG_RESULT($acx_pthread_ok)
+ if test "x$acx_pthread_ok" = xyes; then
+ break;
+ fi
+
+ PTHREAD_LIBS=""
+ PTHREAD_CFLAGS=""
+done
+fi
+
+# Various other checks:
+if test "x$acx_pthread_ok" = xyes; then
+ save_LIBS="$LIBS"
+ LIBS="$PTHREAD_LIBS $LIBS"
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+ # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
+ AC_MSG_CHECKING([for joinable pthread attribute])
+ attr_name=unknown
+ for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+ AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
+ [attr_name=$attr; break])
+ done
+ AC_MSG_RESULT($attr_name)
+ if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
+ AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
+ [Define to necessary symbol if this constant
+ uses a non-standard name on your system.])
+ fi
+
+ AC_MSG_CHECKING([if more special flags are required for pthreads])
+ flag=no
+ case "${host_cpu}-${host_os}" in
+ *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
+ *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
+ esac
+ AC_MSG_RESULT(${flag})
+ if test "x$flag" != xno; then
+ PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
+ fi
+
+ LIBS="$save_LIBS"
+ CFLAGS="$save_CFLAGS"
+
+ # More AIX lossage: must compile with xlc_r or cc_r
+ if test x"$GCC" != xyes; then
+ AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
+ else
+ PTHREAD_CC=$CC
+ fi
+else
+ PTHREAD_CC="$CC"
+fi
+
+AC_SUBST(PTHREAD_LIBS)
+AC_SUBST(PTHREAD_CFLAGS)
+AC_SUBST(PTHREAD_CC)
+
+# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
+if test x"$acx_pthread_ok" = xyes; then
+ ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
+ :
+else
+ acx_pthread_ok=no
+ $2
+fi
+AC_LANG_RESTORE
+])dnl ACX_PTHREAD
projects / lilypond.git / blobdiff