Add some comments explaining the meaning of a boolean

[oota-llvm.git] / autoconf / configure.ac

diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index ca160d163a23d84661514718629bb876d3beb6d4..d013fed21fd825b805eda94da38381a6f5c1a64a 100644 (file)
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -31,7 +31,7 @@ dnl===
 dnl===-----------------------------------------------------------------------===
 dnl Initialize autoconf and define the package name, version number and
 dnl email address for reporting bugs.
-AC_INIT([[llvm]],[[2.4svn]],[llvmbugs@cs.uiuc.edu])
+AC_INIT([[llvm]],[[2.5svn]],[llvmbugs@cs.uiuc.edu])
 
 dnl Provide a copyright substitution and ensure the copyright notice is included
 dnl in the output of --version option of the generated configure script.
@@ -242,6 +242,14 @@ dnl Check for build platform executable suffix if we're crosscompiling
 if test "$cross_compiling" = yes; then
   AC_SUBST(LLVM_CROSS_COMPILING, [1])
   AC_BUILD_EXEEXT
+  ac_build_prefix=${build_alias}-
+  AC_CHECK_PROG(BUILD_CXX, ${ac_build_prefix}g++, ${ac_build_prefix}g++)
+  if test -z "$BUILD_CXX"; then
+     AC_CHECK_PROG(BUILD_CXX, g++, g++)
+     if test -z "$BUILD_CXX"; then
+       AC_CHECK_PROG(BUILD_CXX, c++, c++, , , /usr/ucb/c++)
+     fi
+  fi
 else
   AC_SUBST(LLVM_CROSS_COMPILING, [0])
 fi
@@ -606,6 +614,7 @@ AC_PATH_PROGS(OCAMLC, [ocamlc.opt ocamlc])
 AC_PATH_PROGS(OCAMLOPT, [ocamlopt.opt ocamlopt])
 AC_PATH_PROGS(OCAMLDEP, [ocamldep.opt ocamldep])
 AC_PATH_PROGS(OCAMLDOC, [ocamldoc.opt ocamldoc])
+AC_PATH_PROGS(GAS, [gas as])
 
 dnl Determine if the linker supports the -R option.
 AC_LINK_USE_R
@@ -864,7 +873,7 @@ if test "$llvm_cv_llvmgcc_sanity" = "yes" ; then
   llvmgccmajvers=[`echo $llvmgccversion | sed 's/^\([0-9]\).*/\1/'`]
   AC_SUBST(LLVMGCC_VERSION,$llvmgccversion)
   AC_SUBST(LLVMGCC_MAJVERS,$llvmgccmajvers)
-  llvmgcclangs=[`"$LLVMGCC" -v --help 2>&1 | grep '^Configured with:' | sed 's/^.*--enable-languages=\([^ -]*\).*/\1/'`]
+  llvmgcclangs=[`"$LLVMGCC" -v --help 2>&1 | grep '^Configured with:' | sed 's/^.*--enable-languages=\([^ ]*\).*/\1/'`]
   AC_SUBST(LLVMGCC_LANGS,$llvmgcclangs)
   AC_MSG_RESULT([ok])
 fi
@@ -975,6 +984,8 @@ if test "$binding_prereqs_failed" = 1 ; then
   AC_MSG_ERROR([Prequisites for bindings not satisfied. Fix them or use configure --disable-bindings.])
 fi
 
+dnl Determine if the compiler supports -fvisibility-inlines-hidden.
+AC_CXX_USE_VISIBILITY_INLINES_HIDDEN
 
 dnl===-----------------------------------------------------------------------===
 dnl===