From 2e76f7cd6974f5356d683920eb4e9977fe60d1f0 Mon Sep 17 00:00:00 2001
From: John Rehbein <john.rehbein@icloud.com>
Date: Mon, 12 Aug 2024 00:02:25 +0000
Subject: [PATCH] Improve C compatibility

---
 .github/workflows/ci-build.yml        | 13 ++++++++-----
 Source/ThirdParty/netarch/sam2.c      |  8 ++++++++
 Source/UnrealLibretro/Private/sam2.h  |  2 +-
 Source/UnrealLibretro/Private/ulnet.h | 11 ++++++++++-
 4 files changed, 27 insertions(+), 7 deletions(-)
 create mode 100644 Source/ThirdParty/netarch/sam2.c

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index d003446..78a2491 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -15,10 +15,13 @@ jobs:
       run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
     - name: Build (GCC)
       run: cmake --build build --config Release
-#    - name: Configure CMake (Linux TCC)
-#      run: cmake -S . -B build-tcc -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=tcc
-#    - name: Build (TCC)
-#      run: cmake --build build-tcc --config Release
+    # Check that our C code is reasonably portable
+    - name: Build with TCC
+      run: |
+        tcc -c Source/ThirdParty/netarch/sam2.c \
+        -ISource/UnrealLibretro/Private \
+        -ISource/ThirdParty/zstd/lib \
+        -ISource/ThirdParty/libjuice/include
 
   build-macos:
     runs-on: macos-latest
@@ -44,4 +47,4 @@ jobs:
     - name: Configure CMake (Windows MSVC)
       run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
     - name: Build
-      run: cmake --build build --config Release
+      run: cmake --build build --config Release
\ No newline at end of file
diff --git a/Source/ThirdParty/netarch/sam2.c b/Source/ThirdParty/netarch/sam2.c
new file mode 100644
index 0000000..4b1c723
--- /dev/null
+++ b/Source/ThirdParty/netarch/sam2.c
@@ -0,0 +1,8 @@
+#define SAM2_IMPLEMENTATION
+#define SAM2_SERVER
+#define SAM2_EXECUTABLE
+
+#define ULNET_IMPLEMENTATION
+
+#include "ulnet.h"
+#include "sam2.h"
diff --git a/Source/UnrealLibretro/Private/sam2.h b/Source/UnrealLibretro/Private/sam2.h
index 644c385..a7c095e 100644
--- a/Source/UnrealLibretro/Private/sam2.h
+++ b/Source/UnrealLibretro/Private/sam2.h
@@ -1721,7 +1721,7 @@ int main() {
 
     // Setup signal handler
     uv_signal_t sig;
-    uv_signal_init(&server->loop, &sig);
+    uv_signal_init(&server.loop, &sig);
     sig.data = &server;
     uv_signal_start(&sig, on_signal, SIGINT);
 
diff --git a/Source/UnrealLibretro/Private/ulnet.h b/Source/UnrealLibretro/Private/ulnet.h
index b8be7b5..f351d5b 100644
--- a/Source/UnrealLibretro/Private/ulnet.h
+++ b/Source/UnrealLibretro/Private/ulnet.h
@@ -1,11 +1,15 @@
+#ifndef ULNET_H
+#define ULNET_H
+
 #include "sam2.h"
 
-#include "juice/juice.h"
+typedef struct juice_agent juice_agent_t;
 #include "zstd.h"
 #include "common/xxhash.h"
 #include "fec.h"
 
 #include <stdint.h>
+#include <stdbool.h>
 
 #ifndef ULNET_LINKAGE
 #ifdef __cplusplus
@@ -256,8 +260,11 @@ static inline void ulnet__xor_delta(void *dest, void *src, int size) {
         ((uint8_t *) dest)[i] ^= ((uint8_t *) src)[i];
     }
 }
+#endif
 
 #if defined(ULNET_IMPLEMENTATION)
+#ifndef ULNET_C
+#define ULNET_C
 #if defined(ULNET_IMGUI)
 #include "imgui.h"
 #include "implot.h"
@@ -266,6 +273,7 @@ static inline void ulnet__xor_delta(void *dest, void *src, int size) {
 #define IMH(statement)
 #endif
 
+#include "juice/juice.h"
 #include <assert.h>
 #include <time.h>
 
@@ -1553,3 +1561,4 @@ ULNET_LINKAGE void ulnet_send_save_state(ulnet_session_t *session, juice_agent_t
     free(savestate_transfer_payload);
 }
 #endif
+#endif