libint-compiler: Fix build on mingw-w64

There are still some remaining issues but they need a more changes to configure.ac and Makefiles

configure.ac

@@ -1269,9 +1269,6 @@ if test "X$have_posix_memalign" != "X0"; then
   LIBINT_ALIGN_SIZE=0
  fi
  AC_DEFINE_UNQUOTED(LIBINT_ALIGN_SIZE, $LIBINT_ALIGN_SIZE)
-else # no posix_memalign = death
- echo "did not find posix_memalign ... this SHOULD NOT happen. Cannot proceed."
- exit 1
 fi
 
 dnl ------------------ Check for support for C++11 standard features --------------

src/bin/libint/tactic.cc

@@ -109,9 +109,9 @@ RandomChoiceTactic::RR RandomChoiceTactic::optimal_rr(
     const rr_stack& stack) const {
   if (!stack.empty()) {
     unsigned int size = stack.size();
-    unsigned long rand = random();
+    unsigned long rand_ = random();
     const unsigned long range = RAND_MAX;
-    long choice = (long)(rand * size - 1) / range;
+    long choice = (long)(rand_ * size - 1) / range;
     return stack[choice];
   } else
     return RR();

src/bin/libint/tactic.h

@@ -27,6 +27,11 @@
 #ifndef _libint2_src_bin_libint_tactic_h_
 #define _libint2_src_bin_libint_tactic_h_
 
++#ifdef _WIN32
++#define random rand
++#define srandom srand
++#endif
+
 namespace libint2 {
 
 class DirectedGraph;
@@ -208,10 +213,10 @@ class StdRandomizePolicy {
   }
 
   unsigned int noise(unsigned int nrrs) const {
-    unsigned long rand = random();
+    unsigned long rand_ = random();
     const unsigned long range = RAND_MAX;
     const unsigned int result =
-        static_cast<unsigned int>(std::floor(nrrs * scale_ * rand / range));
+        static_cast<unsigned int>(std::floor(nrrs * scale_ * rand_ / range));
     return result;
   }