2006-03-06 Steven G. Kargl <kargls@comcast.net>

[pf3gnuchains/gcc-fork.git] / libgomp / configure.ac

diff --git a/libgomp/configure.ac b/libgomp/configure.ac
index 90e115b..08f6724 100644 (file)
--- a/libgomp/configure.ac
+++ b/libgomp/configure.ac
@@ -122,6 +122,8 @@ AM_PROG_LIBTOOL
 AC_SUBST(enable_shared)
 AC_SUBST(enable_static)
 
+AM_MAINTAINER_MODE
+
 # We need gfortran to compile parts of the library
 # We can't use AC_PROG_FC because it expects a fully working gfortran.
 #AC_PROG_FC(gfortran)
@@ -136,11 +138,12 @@ AC_SUBST(libtool_VERSION)
 # Check header files.
 AC_STDC_HEADERS
 AC_HEADER_TIME
-AC_CHECK_HEADERS(alloca.h unistd.h semaphore.h sys/time.h)
-AC_CHECK_HEADER([pthread.h],[],
-  [AC_MSG_ERROR([Pthreads are required to build libgomp])])
+AC_CHECK_HEADERS(unistd.h semaphore.h sys/loadavg.h sys/time.h)
+
+GCC_HEADER_STDINT(gstdint.h)
 
 # Check to see if -pthread or -lpthread is needed.  Prefer the former.
+# In case the pthread.h system header is not found, this test will fail.
 XPCFLAGS=""
 CFLAGS="$CFLAGS -pthread"
 AC_LINK_IFELSE(
@@ -161,6 +164,15 @@ AC_LINK_IFELSE(
 # Check for functions needed.
 AC_CHECK_FUNCS(getloadavg clock_gettime)
 
+# Check for broken semaphore implementation on darwin.
+# sem_init returns: sem_init error: Function not implemented.
+case "$host" in
+  *-darwin*)
+    AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1,
+       Define if the POSIX Semaphores do not work on your system.)
+    ;;
+esac
+
 # At least for glibc, clock_gettime is in librt.  But don't pull that
 # in if it still doesn't give us the function we want.
 if test $ac_cv_func_clock_gettime = no; then
@@ -204,7 +216,7 @@ else
 fi
 
 # Set up the set of libraries that we need to link against for libgomp.
-# Note that the GOMP_DRIVER_SPEC in gcc.c will force -pthread for -fopenmp,
+# Note that the GOMP_SELF_SPEC in gcc.c will force -pthread for -fopenmp,
 # which will force linkage against -lpthread (or equivalent for the system).
 # That's not 100% ideal, but about the best we can do easily.
 if test $enable_shared = yes; then
@@ -216,5 +228,46 @@ AC_SUBST(link_gomp)
 
 AM_CONDITIONAL([USE_FORTRAN], [test "$ac_cv_fc_compiler_gnu" = yes])
 
+# ??? 2006-01-24: Paulo committed to asking autoconf folk to document
+# and export AC_COMPUTE_INT.  If that happens, then we'll need to remove
+# the underscore here and update the PREREQ.  If it doesn't, then we'll
+# need to copy this macro to our acinclude.m4.
+save_CFLAGS="$CFLAGS"
+for i in $config_path; do
+  if test -f $srcdir/config/$i/omp-lock.h; then
+    CFLAGS="$CFLAGS -include $srcdir/config/$i/omp-lock.h"
+    break
+  fi
+done
+
+_AC_COMPUTE_INT([sizeof (omp_lock_t)], [OMP_LOCK_SIZE],,
+  [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_t)])])
+_AC_COMPUTE_INT([__alignof (omp_lock_t)], [OMP_LOCK_ALIGN])
+_AC_COMPUTE_INT([sizeof (omp_nest_lock_t)], [OMP_NEST_LOCK_SIZE])
+_AC_COMPUTE_INT([__alignof (omp_nest_lock_t)], [OMP_NEST_LOCK_ALIGN])
+
+# If the lock fits in an integer, then arrange for Fortran to use that
+# integer.  If it doesn't, then arrange for Fortran to use a pointer.
+# Except that we don't have a way at present to multi-lib the installed
+# Fortran modules, so we assume 8 bytes for pointers, regardless of the
+# actual target.
+OMP_LOCK_KIND=$OMP_LOCK_SIZE
+OMP_NEST_LOCK_KIND=$OMP_NEST_LOCK_SIZE
+if test $OMP_LOCK_SIZE -gt 8 || test $OMP_LOCK_ALIGN -gt $OMP_LOCK_SIZE; then
+  OMP_LOCK_KIND=8
+fi
+if test $OMP_NEST_LOCK_SIZE -gt 8 || test $OMP_NEST_LOCK_ALIGN -gt $OMP_NEST_LOCK_SIZE; then
+  OMP_NEST_LOCK_KIND=8
+fi
+
+AC_SUBST(OMP_LOCK_SIZE)
+AC_SUBST(OMP_LOCK_ALIGN)
+AC_SUBST(OMP_NEST_LOCK_SIZE)
+AC_SUBST(OMP_NEST_LOCK_ALIGN)
+AC_SUBST(OMP_LOCK_KIND)
+AC_SUBST(OMP_NEST_LOCK_KIND)
+CFLAGS="$save_CFLAGS"
+
+AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h)
 AC_CONFIG_FILES(Makefile testsuite/Makefile libgomp.spec)
 AC_OUTPUT