If we don't want lpsolve we don't want lpsolve

Change-Id: I6038faf296831da0855eb7cd3628c5c6978d4cb3

configure.ac

@@ -9560,8 +9560,9 @@ else
 fi
 AC_SUBST(ENABLE_LPSOLVE)
 
-AC_MSG_CHECKING([which lpsolve to use])
-if test "$with_system_lpsolve" = "yes"; then
+if test "$ENABLE_LPSOLVE" = TRUE; then
+    AC_MSG_CHECKING([which lpsolve to use])
+    if test "$with_system_lpsolve" = "yes"; then
         AC_MSG_RESULT([external])
         SYSTEM_LPSOLVE=TRUE
         AC_CHECK_HEADER(lpsolve/lp_lib.h, [],
@@ -9574,10 +9575,11 @@ if test "$with_system_lpsolve" = "yes"; then
             [ AC_MSG_ERROR(lpsolve library not found or too old.)], [])
         LIBS=$save_LIBS
         libo_MINGW_CHECK_DLL([lpsolve55])
-else
+    else
         AC_MSG_RESULT([internal])
         SYSTEM_LPSOLVE=
         BUILD_TYPE="$BUILD_TYPE LPSOLVE"
+    fi
 fi
 AC_SUBST(SYSTEM_LPSOLVE)