aclocal.m4

   1 dnl
   2 dnl CY_AC_WITH_THREADS determines which thread library the user intends
   3 dnl to put underneath guile.  Pass it the path to find the guile top-level
   4 dnl source directory.  Eg CY_AC_WITH_THREADS(../..) for tcl/unix.
   5 dnl
   6
   7 AC_DEFUN([CY_AC_WITH_THREADS],[
   8 AC_CACHE_CHECK("threads package type",cy_cv_threads_package,[
   9 AC_CACHE_VAL(cy_cv_threads_cflags,[
  10 AC_CACHE_VAL(cy_cv_threads_libs,[
  11 use_threads=no;
  12 AC_ARG_WITH(threads,[  --with-threads          thread interface],
  13             use_threads=$withval, use_threads=no)
  14 test -n "$use_threads" || use_threads=qt
  15 threads_package=unknown
  16 if test "$use_threads" != no; then
  17 dnl
  18 dnl Test for the qt threads package - used for cooperative threads
  19 dnl This may not necessarily be built yet - so just check for the
  20 dnl header files.
  21 dnl
  22   if test "$use_threads" = yes || test "$use_threads" = qt; then
  23      # Look for qt in source directory.  This is a hack: we look in
  24      # "./qt" because this check might be run at the top level.
  25      if test -f $srcdir/../qt/qt.c || test -f $srcdir/qt/qt.c; then
  26         threads_package=COOP
  27         cy_cv_threads_cflags="-I$srcdir/../qt -I../qt"
  28         cy_cv_threads_libs="../threads/libthreads.a ../qt/libqt.a"
  29      fi
  30   else
  31      if test -f $use_threads/qt.c; then
  32         # FIXME seems as though we should try to use an installed qt here.
  33         threads_package=COOP
  34         cy_cv_threads_cflags="-I$use_threads -I../qt"
  35         cy_cv_threads_libs="../threads/libthreads.a ../qt/libqt.a"
  36      fi
  37   fi
  38   if test "$use_threads" = pthreads; then
  39      # Look for pthreads in srcdir.  See above to understand why
  40      # we always set threads_package.
  41      if test -f $srcdir/../../pthreads/pthreads/queue.c \
  42           || test -f $srcdir/../pthreads/pthreads/queue.c; then
  43         threads_package=MIT
  44         cy_cv_threads_cflags="-I$srcdir/../../pthreads/include"
  45         cy_cv_threads_libs="-L../../pthreads/lib -lpthread"
  46      fi
  47   fi
  48   saved_CPP="$CPPFLAGS"
  49   saved_LD="$LDFLAGS"
  50   saved_LIBS="$LIBS"
  51   if test "$threads_package" = unknown; then
  52 dnl
  53 dnl Test for the FSU threads package
  54 dnl
  55     CPPFLAGS="-I$use_threads/include"
  56     LDFLAGS="-L$use_threads/lib"
  57     LIBS="-lgthreads -lmalloc"
  58     AC_TRY_LINK([#include <pthread.h>],[
  59 pthread_equal(NULL,NULL);
  60 ], threads_package=FSU)
  61   fi
  62   if test "$threads_package" = unknown; then
  63 dnl
  64 dnl Test for the MIT threads package
  65 dnl
  66     LIBS="-lpthread"
  67     AC_TRY_LINK([#include <pthread.h>],[
  68 pthread_equal(NULL,NULL);
  69 ], threads_package=MIT)
  70   fi
  71   if test "$threads_package" = unknown; then
  72 dnl
  73 dnl Test for the PCthreads package
  74 dnl
  75     LIBS="-lpthreads"
  76     AC_TRY_LINK([#include <pthread.h>],[
  77 pthread_equal(NULL,NULL);
  78 ], threads_package=PCthreads)
  79   fi
  80 dnl
  81 dnl Set the appropriate flags!
  82 dnl
  83   cy_cv_threads_cflags="$CPPFLAGS $cy_cv_threads_cflags"
  84   cy_cv_threads_libs="$LDFLAGS $LIBS $cy_cv_threads_libs"
  85   cy_cv_threads_package=$threads_package
  86   CPPFLAGS="$saved_CPP"
  87   LDFLAGS="$saved_LD"
  88   LIBS="$saved_LIBS"
  89   if test "$threads_package" = unknown; then
  90     AC_MSG_ERROR("cannot find thread library installation")
  91   fi
  92 fi
  93 ])
  94 ])
  95 ],
  96 dnl
  97 dnl Set flags according to what is cached.
  98 dnl
  99 CPPFLAGS="$cy_cv_threads_cflags"
 100 LIBS="$cy_cv_threads_libs"
 101 )
 102 ])