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-rw-r--r--kernel/driver.cc2
-rw-r--r--kernel/log.h3
2 files changed, 3 insertions, 2 deletions
diff --git a/kernel/driver.cc b/kernel/driver.cc
index a4556fb1b..3c185e44b 100644
--- a/kernel/driver.cc
+++ b/kernel/driver.cc
@@ -749,7 +749,7 @@ int main(int argc, char **argv)
delete yosys_design;
yosys_design = NULL;
-#ifndef NDEBUG
+#ifdef COVER_ACTIVE
if (getenv("YOSYS_COVER_DIR") || getenv("YOSYS_COVER_FILE"))
{
char filename_buffer[4096];
diff --git a/kernel/log.h b/kernel/log.h
index 18ea528a0..1658800dd 100644
--- a/kernel/log.h
+++ b/kernel/log.h
@@ -75,7 +75,8 @@ void log_cell(RTLIL::Cell *cell, std::string indent = "");
// This is the magic behind the code coverage counters
// ---------------------------------------------------
-#ifndef NDEBUG
+#if defined(__linux__) && !defined(NDEBUG)
+#define COVER_ACTIVE
#define cover(_id) do { \
static CoverData __d __attribute__((section("yosys_cover_list"), aligned(1))) = { __FILE__, __FUNCTION__, _id, __LINE__, 0 }; \