Convert builds to use musl libc for generic linux support

.github/workflows/ci.yml

@@ -9,11 +9,14 @@ jobs:
     name: build x86-64
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - run: cd src/ && cmake . && make && ls -lh ntttcp && file ntttcp
+      - uses: gerlero/apt-install@v1
+        with:
+          packages: musl musl-dev musl-tools
+      - uses: actions/checkout@v7
+      - run: cd src/ && CC="musl-gcc" cmake -DCMAKE_C_FLAGS="-static" . && make && ls -lh ntttcp && file ntttcp
 
       - name: Uploads binary file for x86-64
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ntttcp-x86_64
           path: src/ntttcp
@@ -23,19 +26,19 @@ jobs:
     name: build aarch64
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: uraimo/run-on-arch-action@v2
+      - uses: actions/checkout@v7
+      - uses: uraimo/run-on-arch-action@v3
         name: Build artifact
         id: build
         with:
           arch: aarch64
-          distro: ubuntu20.04
+          distro: ubuntu_latest
           run: |
-            apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y build-essential cmake file
-            cd src/ && cmake . && make && ls -lh ntttcp && file ntttcp
+            apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y build-essential cmake file musl musl-dev musl-tools
+            cd src/ && CC="musl-gcc" cmake -DCMAKE_C_FLAGS="-static" . && make && ls -lh ntttcp && file ntttcp
 
       - name: Uploads binary file for aarch64
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ntttcp-aarch64
           path: src/ntttcp

README.md

@@ -36,6 +36,7 @@ A multiple-threaded Linux network throughput benchmark tool.
 
 * Support writing log into JSON file ('-j').
 
+* CI build statically links with [musl libc](https://wiki.musl-libc.org/getting-started.html) for portability across Linux distros & releases.
 
 ## Getting Started
 

src/const.h

@@ -5,7 +5,7 @@
 // ----------------------------------------------------------------------------------
 
 #define TOOL_NAME "NTTTCP for Linux"
-#define TOOL_VERSION "1.4.7"
+#define TOOL_VERSION "1.4.8"
 #define AUTHOR_NAME "Shihua (Simon) Xiao, sixiao@microsoft.com"
 
 #define TCP 				SOCK_STREAM

src/udpstream.c

@@ -115,7 +115,7 @@ void *run_ntttcp_sender_udp4_stream(struct ntttcp_stream_client *sc)
 		if (sc->socket_fq_rate_limit_bytes != 0)
 			enable_fq_rate_limit(sc, sockfd);
 
-		if (connect(sockfd, &serv_addr, sa_size) == -1) {
+		if (connect(sockfd, (const struct sockaddr *)&serv_addr, sa_size) == -1) {
                         ASPRINTF(&log,"failed to connect socket[%d] to remote: [%s:%d]. errno = %d.",
                                 sockfd, sc->bind_address, sc->server_port, errno);
                         PRINT_ERR_FREE(log);