Pull from FB rev 63ce89e2f2301e6bba44a111cc7d4218022156f6
[folly.git] / folly / m4 / ax_boost_thread.m4
diff --git a/folly/m4/ax_boost_thread.m4 b/folly/m4/ax_boost_thread.m4
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+# ===========================================================================
+#      http://www.gnu.org/software/autoconf-archive/ax_boost_thread.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_BOOST_THREAD
+#
+# DESCRIPTION
+#
+#   Test for Thread library from the Boost C++ libraries. The macro requires
+#   a preceding call to AX_BOOST_BASE. Further documentation is available at
+#   <http://randspringer.de/boost/index.html>.
+#
+#   This macro calls:
+#
+#     AC_SUBST(BOOST_THREAD_LIB)
+#
+#   And sets:
+#
+#     HAVE_BOOST_THREAD
+#
+# LICENSE
+#
+#   Copyright (c) 2009 Thomas Porschberg <thomas@randspringer.de>
+#   Copyright (c) 2009 Michael Tindal
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+
+#serial 23
+
+AC_DEFUN([AX_BOOST_THREAD],
+[
+        AC_ARG_WITH([boost-thread],
+        AS_HELP_STRING([--with-boost-thread@<:@=special-lib@:>@],
+                   [use the Thread library from boost - it is possible to specify a certain library for the linker
+                        e.g. --with-boost-thread=boost_thread-gcc-mt ]),
+        [
+        if test "$withval" = "no"; then
+                want_boost="no"
+        elif test "$withval" = "yes"; then
+            want_boost="yes"
+            ax_boost_user_thread_lib=""
+        else
+                    want_boost="yes"
+                        ax_boost_user_thread_lib="$withval"
+                                fi
+        ],
+        [want_boost="yes"]
+        )
+
+        if test "x$want_boost" = "xyes"; then
+        AC_REQUIRE([AC_PROG_CC])
+        AC_REQUIRE([AC_CANONICAL_BUILD])
+                CPPFLAGS_SAVED="$CPPFLAGS"
+                        CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
+                                            export CPPFLAGS
+
+                                                   LDFLAGS_SAVED="$LDFLAGS"
+                                                        LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
+                                                                          export LDFLAGS
+
+        AC_CACHE_CHECK(whether the Boost::Thread library is available,
+                                                            ax_cv_boost_thread,
+        [AC_LANG_PUSH([C++])
+                         CXXFLAGS_SAVE=$CXXFLAGS
+
+                                         if test "x$host_os" = "xsolaris" ; then
+                                                              CXXFLAGS="-pthreads $CXXFLAGS"
+                                                                                         elif test "x$host_os" = "xmingw32" ; then
+                                                                                                                CXXFLAGS="-mthreads $CXXFLAGS"
+                                                                                                                                      else
+                                                                                                                                         CXXFLAGS="-pthread $CXXFLAGS"
+                                                                                                                                                              fi
+                                                                                                                                                                 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/thread/thread.hpp>]],
+                                   [[boost::thread_group thrds;
+                                   return 0;]])],
+                   ax_cv_boost_thread=yes, ax_cv_boost_thread=no)
+                                                 CXXFLAGS=$CXXFLAGS_SAVE
+             AC_LANG_POP([C++])
+                ])
+                        if test "x$ax_cv_boost_thread" = "xyes"; then
+           if test "x$host_os" = "xsolaris" ; then
+                     BOOST_CPPFLAGS="-pthreads $BOOST_CPPFLAGS"
+                                                  elif test "x$host_os" = "xmingw32" ; then
+                                                              BOOST_CPPFLAGS="-mthreads $BOOST_CPPFLAGS"
+                                                                                           else
+                                                                                                          BOOST_CPPFLAGS="-pthread $BOOST_CPPFLAGS"
+                                                                                                                                      fi
+
+                                                                                                                                        AC_SUBST(BOOST_CPPFLAGS)
+
+                                                                                                                                          AC_DEFINE(HAVE_BOOST_THREAD,,[define if the Boost::Thread library is available])
+            BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`
+
+                                             LDFLAGS_SAVE=$LDFLAGS
+                        case "x$host_os" in
+                          *bsd* )
+                               LDFLAGS="-pthread $LDFLAGS"
+                          break;
+                          ;;
+                        esac
+            if test "x$ax_boost_user_thread_lib" = "x"; then
+                for libextension in `ls $BOOSTLIBDIR/libboost_thread*.so* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_thread.*\)\.so.*$;\1;'` `ls $BOOSTLIBDIR/libboost_thread*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_thread.*\)\.a*$;\1;'`; do
+                     ax_lib=${libextension}
+                                            AC_CHECK_LIB($ax_lib, exit,
+                                 [BOOST_THREAD_LIB="-l$ax_lib"; AC_SUBST(BOOST_THREAD_LIB) link_thread="yes"; break],
+                                 [link_thread="no"])
+                                                        done
+                if test "x$link_thread" != "xyes"; then
+                for libextension in `ls $BOOSTLIBDIR/boost_thread*.dll* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^\(boost_thread.*\)\.dll.*$;\1;'` `ls $BOOSTLIBDIR/boost_thread*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^\(boost_thread.*\)\.a*$;\1;'` ; do
+                     ax_lib=${libextension}
+                                            AC_CHECK_LIB($ax_lib, exit,
+                                 [BOOST_THREAD_LIB="-l$ax_lib"; AC_SUBST(BOOST_THREAD_LIB) link_thread="yes"; break],
+                                 [link_thread="no"])
+                                                        done
+                fi
+
+            else
+               for ax_lib in $ax_boost_user_thread_lib boost_thread-$ax_boost_user_thread_lib; do
+                                   AC_CHECK_LIB($ax_lib, exit,
+                                   [BOOST_THREAD_LIB="-l$ax_lib"; AC_SUBST(BOOST_THREAD_LIB) link_thread="yes"; break],
+                                   [link_thread="no"])
+                  done
+
+            fi
+            if test "x$ax_lib" = "x"; then
+                AC_MSG_ERROR(Could not find a version of the library!)
+            fi
+                        if test "x$link_thread" = "xno"; then
+                                                AC_MSG_ERROR(Could not link against $ax_lib !)
+                        else
+                           case "x$host_os" in
+                              *bsd* )
+                                                BOOST_LDFLAGS="-pthread $BOOST_LDFLAGS"
+                              break;
+                              ;;
+                           esac
+
+                                        fi
+                                                fi
+
+                                                        CPPFLAGS="$CPPFLAGS_SAVED"
+                                                        LDFLAGS="$LDFLAGS_SAVED"
+                                                        fi
+])
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