From 7b7bed60b1289f232dcf9a82d72c20bccdb5124a Mon Sep 17 00:00:00 2001
From: leleliu008 <leleliu008@gmail.com>
Date: Tue, 17 Oct 2023 16:39:33 +0800
Subject: [PATCH] optimized

Signed-off-by: leleliu008 <leleliu008@gmail.com>
---
 src/install.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/install.c b/src/install.c
index 58fe06d..c190e7b 100644
--- a/src/install.c
+++ b/src/install.c
@@ -3019,6 +3019,25 @@ static int ppkg_install_package(
 
     //////////////////////////////////////////////////////////////////////////////
 
+    char   m4Path[PATH_MAX];
+    size_t m4PathLength = 0U;
+
+    ret = exe_where("m4", m4Path, PATH_MAX, &m4PathLength);
+
+    if (ret < 0) {
+        perror(NULL);
+        return PPKG_ERROR;
+    }
+
+    if (m4PathLength > 0U) {
+        if (setenv("M4", m4Path, 1) != 0) {
+            perror("M4");
+            return PPKG_ERROR;
+        }
+    }
+
+    //////////////////////////////////////////////////////////////////////////////
+
     int nativePackageIDArray[20] = {0};
     int nativePackageIDArraySize = 0;