MSVC 7.0 (Visual C/C++ 2002) support, and touhou6 preset (#839)

* Introduce MSVC7.0 (Visual Studio 2002) toolchain

This renames the msvc7.0 toolchain to msvc7.1 (as it is based on Visual
Studio 2003, which is msvc7.1), and introduces a new msvc7.0 toolchain
based on Visual Studio 2002.

* Add presets for Touhou 6 decompilation project

* Remove noexec from /sandbox/tmp in docker

The MSVC toolchains store intermediate artifacts in the /sandbox/tmp
folder, and need to be able to mmap them with PROT_EXEC rights, which is
prevented by the noexec flag that docker automatically puts on all
tmpfs. To avoid this, we need to ask docker to remove that flag.

backend/compilers/download.py

@@ -973,7 +973,16 @@ def download_win9x():
             + compiler
             + ".tar.gz"
         )
-        download_tar(url=url, dest_name=compiler)
+        # This is actually msvc 7.1.
+        if compiler == "msvc7.0":
+            download_tar(url=url, dest_name="msvc7.1")
+
+    # Download Visual C/C++ 2002 (MSVC 7.0). Note that this toolchain, unlike
+    # the others, also contains the PlatformSDK and DirectX 8
+    download_tar(
+        url="https://github.com/roblabla/MSVC-7.0-Portable/releases/download/release/msvc7.0.tar.gz",
+        dest_name="msvc7.0",
+    )
 
     # For the repo these compilers are stored in they need a few location adjustments for neatness, and permissions set to executable
     download_zip(

backend/coreapp/compilers.py

@@ -1033,6 +1033,12 @@ def preset_from_name(name: str) -> Optional[Preset]:
     platform=WIN9X,
     cc=CL_WIN,
 )
+
+MSVC71 = MSVCCompiler(
+    id="msvc7.1",
+    platform=WIN9X,
+    cc=CL_WIN,
+)
 # Watcom doesn't like '/' in paths passed to it so we need to replace them.
 WATCOM_ARGS = ' -zq -i="Z:${COMPILER_DIR}/h" -i="Z:${COMPILER_DIR}/h/nt" ${COMPILER_FLAGS} -fo"Z:${OUTPUT}" "Z:${INPUT}"'
 WATCOM_CC = (
@@ -1243,6 +1249,7 @@ def preset_from_name(name: str) -> Optional[Preset]:
     MSVC65PP,
     MSVC66,
     MSVC70,
+    MSVC71,
     # Watcom, DOS and Win9x
     WATCOM_105_C,
     WATCOM_105_CPP,
@@ -1761,6 +1768,8 @@ def preset_from_name(name: str) -> Optional[Preset]:
     ),
     # Windows
     Preset("LEGO Island", MSVC42, "/W3 /GX /O2"),
+    Preset("Touhou 6 (C)", MSVC70, "/MT /G5 /GS /Od /Oi /Ob1"),
+    Preset("Touhou 6 (C++)", MSVC70, "/MT /G5 /GS /Od /Oi /Ob1 /TP"),
 ]
 
 

docker-compose.yaml

@@ -42,7 +42,7 @@ services:
     tmpfs:
     # Use a separate tmpfs to prevent a rogue jailed process
     # from filling /tmp on the parent container
-    - /sandbox/tmp:uid=1000,gid=1000,size=64M,mode=0700
+    - /sandbox/tmp:exec,uid=1000,gid=1000,size=64M,mode=0700
   frontend:
     build: frontend
     environment:

frontend/src/lib/i18n/locales/en/compilers.json

@@ -61,7 +61,8 @@
     "msvc6.5": "Microsoft Visual C/C++ 6.0 Service Pack 5",
     "msvc6.5pp": "Microsoft Visual C/C++ 6.0 Service Pack 5 with Processor Pack",
     "msvc6.6": "Microsoft Visual C/C++ 6.0 Service Pack 6",
-    "msvc7.0": "Microsoft Visual C/C++ 7.0 .NET 2003",
+    "msvc7.0": "Microsoft Visual C/C++ 7.0 .NET 2002",
+    "msvc7.1": "Microsoft Visual C/C++ 7.1 .NET 2003",
     "mwcc_20_72": "2.0 build 72 (MW 1.2base)",
     "mwcc_20_79": "2.0 build 79 (MW 1.2sp2)",
     "mwcc_20_82": "2.0 build 82 (MW 1.2sp2p3)",