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-rw-r--r--linux-user/main.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/linux-user/main.c b/linux-user/main.c
index 379ac2962d..baa90731dc 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -1906,7 +1906,12 @@ void usage(void)
"debug options:\n"
"-d options activate log (logfile=%s)\n"
"-p pagesize set the host page size to 'pagesize'\n"
- "-strace log system calls\n",
+ "-strace log system calls\n"
+ "\n"
+ "environment variables:\n"
+ "QEMU_STRACE Print system calls and arguments similar to the\n"
+ " 'strace' program. Enable by setting to any value.\n"
+ ,
TARGET_ARCH,
interp_prefix,
x86_stack_size,