From 2fcc3f86c084887c7435e2daa02d8496c7cce6dd Mon Sep 17 00:00:00 2001
From: "Markus F.X.J. Oberhumer" <markus@oberhumer.com>
Date: Sun, 26 Aug 2018 06:29:58 +0200
Subject: [PATCH] Introduce environment variable UPX_DISABLE_GITREV_WARNING.

---
 .github/travis_testsuite_1.sh |  1 +
 src/main.cpp                  | 17 ++++++++++++-----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/.github/travis_testsuite_1.sh b/.github/travis_testsuite_1.sh
index 58d79f9f..758329f1 100644
--- a/.github/travis_testsuite_1.sh
+++ b/.github/travis_testsuite_1.sh
@@ -168,6 +168,7 @@ if [[ $BM_B =~ (^|\+)coverage($|\+) ]]; then
 fi
 
 export UPX="--prefer-ucl --no-color --no-progress"
+export UPX_DISABLE_GITREV_WARNING=1
 
 # let's go
 if ! $upx_run --version;          then echo "UPX-ERROR: FATAL: upx --version FAILED"; exit 1; fi
diff --git a/src/main.cpp b/src/main.cpp
index c4c79077..b5c64f45 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1540,11 +1540,18 @@ int __acc_cdecl_main main(int argc, char *argv[])
 
     if (gitrev[0])
     {
-        FILE *f = stdout;
-        int fg = con_fg(f,FG_RED);
-        con_fprintf(f,"\nWARNING: this is an unstable beta version - use for testing only! Really.\n");
-        fg = con_fg(f,fg);
-        UNUSED(fg);
+        bool warn = true;
+        const char *ee = getenv("UPX_DISABLE_GITREV_WARNING");
+        if (ee && ee[0] && strcmp(ee, "1") == 0)
+            warn = false;
+        if (warn)
+        {
+            FILE *f = stdout;
+            int fg = con_fg(f, FG_RED);
+            con_fprintf(f, "\nWARNING: this is an unstable beta version - use for testing only! Really.\n");
+            fg = con_fg(f, fg);
+            UNUSED(fg);
+        }
     }
 
 #if 0 && defined(__GLIBC__)