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-rw-r--r--techlibs/intel/synth_intel.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/techlibs/intel/synth_intel.cc b/techlibs/intel/synth_intel.cc
index 639cba2c2..09c9ba3af 100644
--- a/techlibs/intel/synth_intel.cc
+++ b/techlibs/intel/synth_intel.cc
@@ -48,6 +48,8 @@ struct SynthIntelPass : public ScriptPass {
log(" -vqm <file>\n");
log(" write the design to the specified Verilog Quartus Mapping File. Writing of an\n");
log(" output file is omitted if this parameter is not specified.\n");
+ log(" Note that this backend has not been tested and is likely incompatible\n");
+ log(" with recent versions of Quartus.\n");
log("\n");
log(" -vpr <file>\n");
log(" write BLIF files for VPR flow experiments. The synthesized BLIF output file is not\n");
@@ -108,6 +110,7 @@ struct SynthIntelPass : public ScriptPass {
}
if (args[argidx] == "-vqm" && argidx + 1 < args.size()) {
vout_file = args[++argidx];
+ log_warning("The Quartus backend has not been tested recently and is likely incompatible with modern versions of Quartus.\n");
continue;
}
if (args[argidx] == "-vpr" && argidx + 1 < args.size()) {