1 files changed, 38 insertions, 0 deletions
diff --git a/blt/aclocal.m4 b/blt/aclocal.m4
new file mode 100644
index 00000000000..7441d3d50d8
--- /dev/null
+++ b/blt/aclocal.m4
@@ -0,0 +1,38 @@
+dnl AC_TRY_RUN_WITH_OUTPUT(VARIABLE, PROGRAM,)
+AC_DEFUN(AC_TRY_RUN_WITH_OUTPUT,
+[AC_REQUIRE([AC_PROG_CC])dnl
+if test "$cross_compiling" = yes; then
+  ifelse([$3], ,
+    [errprint(__file__:__line__: warning: [AC_TRY_RUN_WITH_OUTPUT] called without default to
+ allow cross compiling
+)dnl
+  AC_MSG_ERROR(can not run test program while cross compiling)],
+  [$3])
+else
+cat > conftest.$ac_ext <<EOF
+[#]line __oline__ "configure"
+#include "confdefs.h"
+ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
+extern "C" void exit(int);
+#endif
+])dnl
+[$2]
+EOF
+eval $ac_link
+if test -s conftest && (./conftest > ./conftest.stdout; exit) 2>/dev/null; then
+   $1=`cat ./conftest.stdout`
+else
+   $1=""
+fi
+fi
+rm -fr conftest*])
+
+dnl AC_GREP_SYMBOL(VARIABLE, SYMBOL, FILE)
+AC_DEFUN(AC_GREP_SYMBOL,
+[AC_REQUIRE([AC_PROG_AWK])dnl
+cat > conftest.awk <<EOF
+[/^# *define *]$2[[ \t]]/ { print [\$][3] }
+EOF
+$1=`${AWK} -f conftest.awk $3`
+rm -rf conftest*])
+