1 files changed, 43 insertions, 0 deletions
diff --git a/winsup/acinclude.m4 b/winsup/acinclude.m4
new file mode 100644
index 000000000..4e2db0768
--- /dev/null
+++ b/winsup/acinclude.m4
@@ -0,0 +1,43 @@
+dnl This provides configure definitions used by all the winsup
+dnl configure.in files.
+
+# FIXME: We temporarily define our own version of AC_PROG_CC.  This is
+# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS.  We
+# are probably using a cross compiler, which will not be able to fully
+# link an executable.  This should really be fixed in autoconf
+# itself.
+
+AC_DEFUN([LIB_AC_PROG_CC_GNU],
+[AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
+[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
+cat > conftest.c <<EOF
+#ifdef __GNUC__
+  yes;
+#endif
+EOF
+if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
+  ac_cv_prog_gcc=yes
+else
+  ac_cv_prog_gcc=no
+fi])])
+
+AC_DEFUN([LIB_AC_PROG_CC],
+[AC_BEFORE([$0], [AC_PROG_CPP])dnl
+AC_CHECK_TOOL(CC, gcc, gcc)
+: ${CC:=gcc}
+AC_PROG_CC
+test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
+])
+
+AC_DEFUN([LIB_AC_PROG_CXX],
+[AC_BEFORE([$0], [AC_PROG_CPP])dnl
+AC_CHECK_TOOL(CXX, g++, g++)
+if test -z "$CXX"; then
+  AC_CHECK_TOOL(CXX, g++, c++, , , )
+  : ${CXX:=g++}
+  AC_PROG_CXX
+  test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
+fi
+
+CXXFLAGS='$(CFLAGS)'
+])