patch 8.0.0570: can't run make with several jobs
Problem: Can't run make with several jobs, creating directories has a race
condition.
Solution: Use the MKDIR_P autoconf mechanism. (Eric N. Vander Weele,
closes #1639)
diff --git a/src/configure.ac b/src/configure.ac
index 6251681..e59f86b 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -11,12 +11,13 @@
AC_PROG_MAKE_SET
dnl Checks for programs.
-AC_PROG_CC dnl required by almost everything
-AC_PROG_CPP dnl required by header file checks
-AC_PROGRAM_EGREP dnl required by AC_EGREP_CPP
-AC_PROG_FGREP dnl finds working grep -F
-AC_ISC_POSIX dnl required by AC_C_CROSS
-AC_PROG_AWK dnl required for "make html" in ../doc
+AC_PROG_CC dnl required by almost everything
+AC_PROG_CPP dnl required by header file checks
+AC_PROGRAM_EGREP dnl required by AC_EGREP_CPP
+AC_PROG_FGREP dnl finds working grep -F
+AC_ISC_POSIX dnl required by AC_C_CROSS
+AC_PROG_AWK dnl required for "make html" in ../doc
+AC_PROG_MKDIR_P dnl portable "mkdir -p", also works in parallel
dnl Don't strip if we don't have it
AC_CHECK_PROG(STRIP, strip, strip, :)