diff mbox series

[Openvpn-devel,M] Change in openvpn[master]: Add building/testing with msbuild and the clang compiler

Message ID b8cb070cbecebd0b53e6c6f93010a3dada586f5e-HTML@gerrit.openvpn.net
State New
Headers show
Series [Openvpn-devel,M] Change in openvpn[master]: Add building/testing with msbuild and the clang compiler | expand

Commit Message

cron2 (Code Review) Sept. 17, 2024, 3:04 p.m. UTC 
Attention is currently required from: flichtenheld.

Hello flichtenheld,

I'd like you to do a code review.
Please visit

    http://gerrit.openvpn.net/c/openvpn/+/751?usp=email

to review the following change.


Change subject: Add building/testing with msbuild and the clang compiler
......................................................................

Add building/testing with msbuild and the clang compiler

The LLVM/clang compiler warning and error message are easier too read
than their MSVC cl counterparts. Also compiling/running tests on Windows
with a different compiler has the benefit of a better coverage.

This includes a few minor changes to allow clang-cl to compile the
project.

Change-Id: I43d84034f3e920a45731c4aab4f851a60921290d
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
---
M .github/workflows/build.yaml
M CMakeLists.txt
M CMakePresets.json
M config.h.cmake.in
M src/openvpnmsica/openvpnmsica.c
M src/openvpnmsica/openvpnmsica.h
6 files changed, 75 insertions(+), 14 deletions(-)



  git pull ssh://gerrit.openvpn.net:29418/openvpn refs/changes/51/751/1
diff mbox series

Patch

diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 361d457..d326937 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -272,7 +272,7 @@ 
       strategy:
         fail-fast: false
         matrix:
-          arch: [amd64, x86, arm64]
+          arch: [amd64, x86, arm64, amd64-clang, x86-clang]
 
       name: "msbuild - ${{ matrix.arch }} - openssl"
       env:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6271574..a841590 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -624,7 +624,8 @@ 
         check_linker_flag(C -Wl,--wrap=parse_line LD_SUPPORTS_WRAP)
     endif()
 
-    if (${LD_SUPPORTS_WRAP})
+    # Clang-cl (which is also MSVC) is wrongly detected to support wrap
+    if (NOT MSVC AND "${LD_SUPPORTS_WRAP}")
         list(APPEND unit_tests
             "test_argv"
             "test_tls_crypt"
diff --git a/CMakePresets.json b/CMakePresets.json
index 135b19d..b6ec201 100644
--- a/CMakePresets.json
+++ b/CMakePresets.json
@@ -122,6 +122,10 @@ 
             }
         },
         {
+            "name": "clangtoolset",
+            "toolset": "ClangCL"
+        },
+        {
             "name": "mingw-x64",
             "inherits": [ "base", "base-mingw", "x64-mingw" ]
         },
@@ -134,6 +138,10 @@ 
             "inherits": [ "base", "base-windows", "x64", "release" ]
         },
         {
+            "name": "win-amd64-clang-release",
+            "inherits": [ "base", "base-windows", "clangtoolset", "x64", "release" ]
+        },
+        {
             "name": "win-arm64-release",
             "inherits": [ "base", "base-windows", "arm64", "release" ]
         },
@@ -142,10 +150,18 @@ 
             "inherits": [ "base", "base-windows", "x86", "release" ]
         },
         {
+            "name": "win-x86-clang-release",
+            "inherits": [ "base", "base-windows", "clangtoolset", "x86", "release" ]
+        },
+        {
             "name": "win-amd64-debug",
             "inherits": [ "base", "base-windows", "x64", "debug" ]
         },
         {
+            "name": "win-amd64-clang-debug",
+            "inherits": [ "base", "base-windows", "clangtoolset", "x64", "debug" ]
+        },
+        {
             "name": "win-arm64-debug",
             "inherits": [ "base", "base-windows", "arm64", "debug" ]
         },
@@ -154,6 +170,10 @@ 
             "inherits": [ "base", "base-windows", "x86", "debug" ]
         },
         {
+            "name": "win-x86-clang-debug",
+            "inherits": [ "base", "base-windows", "clangtoolset", "x86", "debug" ]
+        },
+        {
             "name": "unix-native",
             "generator": "Ninja Multi-Config",
             "binaryDir": "out/build/unix"
@@ -174,6 +194,11 @@ 
             "configuration": "Release"
         },
         {
+            "name": "win-amd64-clang-release",
+            "configurePreset": "win-amd64-clang-release",
+            "configuration": "Release"
+        },
+        {
             "name": "win-arm64-release",
             "configurePreset": "win-arm64-release",
             "configuration": "Release"
@@ -184,11 +209,21 @@ 
             "configuration": "Release"
         },
         {
+            "name": "win-x86-clang-release",
+            "configurePreset": "win-x86-clang-release",
+            "configuration": "Release"
+        },
+        {
             "name": "win-amd64-debug",
             "configurePreset": "win-amd64-debug",
             "configuration": "Debug"
         },
         {
+            "name": "win-amd64-clang-debug",
+            "configurePreset": "win-amd64-clang-debug",
+            "configuration": "Debug"
+        },
+        {
             "name": "win-arm64-debug",
             "configurePreset": "win-arm64-debug",
             "configuration": "Debug"
@@ -199,6 +234,11 @@ 
             "configuration": "Debug"
         },
         {
+            "name": "win-x86-clang-debug",
+            "configurePreset": "win-x86-clang-debug",
+            "configuration": "Debug"
+        },
+        {
             "name": "unix-native",
             "configurePreset": "unix-native"
         }
@@ -209,18 +249,34 @@ 
             "configurePreset": "win-amd64-release"
         },
         {
+            "name": "win-amd64-clang-release",
+            "configurePreset": "win-amd64-clang-release"
+        },
+        {
             "name": "win-x86-release",
             "configurePreset": "win-x86-release"
         },
         {
+            "name": "win-x86-clang-release",
+            "configurePreset": "win-x86-clang-release"
+        },
+        {
             "name": "win-amd64-debug",
             "configurePreset": "win-amd64-debug"
         },
         {
+            "name": "win-amd64-clang-debug",
+            "configurePreset": "win-amd64-clang-debug"
+        },
+        {
             "name": "win-x86-debug",
             "configurePreset": "win-x86-debug"
         },
         {
+            "name": "win-x86-clang-debug",
+            "configurePreset": "win-x86-clang-debug"
+        },
+        {
             "name": "unix-native",
             "configurePreset": "unix-native"
         }
diff --git a/config.h.cmake.in b/config.h.cmake.in
index 18af5e9..724da2e 100644
--- a/config.h.cmake.in
+++ b/config.h.cmake.in
@@ -442,8 +442,10 @@ 
 # define _GNU_SOURCE 1
 #endif
 
-
-#if defined(_WIN32)
+/* if inttypes.h is included this breaks rc.exe when using the ClangCL
+ * Toolchain as it pulls in a inttypes.h variant for clang that rc.exe does
+ * not understand (#include_next preprocessor directive) */
+#if defined(_WIN32) && !defined(RC_INVOKED)
 #include <inttypes.h>
 typedef uint32_t in_addr_t;
 typedef uint16_t in_port_t;
@@ -455,7 +457,7 @@ 
 #define SIGTERM   15
 #endif
 
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) && !defined(RC_INVOKED)
 #include <BaseTsd.h>
 typedef SSIZE_T ssize_t;
 #define strncasecmp strnicmp
diff --git a/src/openvpnmsica/openvpnmsica.c b/src/openvpnmsica/openvpnmsica.c
index 5ffb5b3..4517f51 100644
--- a/src/openvpnmsica/openvpnmsica.c
+++ b/src/openvpnmsica/openvpnmsica.c
@@ -300,7 +300,7 @@ 
 UINT __stdcall
 FindSystemInfo(_In_ MSIHANDLE hInstall)
 {
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 #pragma comment(linker, DLLEXP_EXPORT)
 #endif
 
@@ -337,7 +337,7 @@ 
 UINT __stdcall
 CloseOpenVPNGUI(_In_ MSIHANDLE hInstall)
 {
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 #pragma comment(linker, DLLEXP_EXPORT)
 #endif
     UNREFERENCED_PARAMETER(hInstall); /* This CA is does not interact with MSI session (report errors, access properties, tables, etc.). */
@@ -360,7 +360,7 @@ 
 UINT __stdcall
 StartOpenVPNGUI(_In_ MSIHANDLE hInstall)
 {
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 #pragma comment(linker, DLLEXP_EXPORT)
 #endif
 
@@ -633,7 +633,7 @@ 
 UINT __stdcall
 EvaluateTUNTAPAdapters(_In_ MSIHANDLE hInstall)
 {
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 #pragma comment(linker, DLLEXP_EXPORT)
 #endif
 
@@ -786,7 +786,7 @@ 
                 {
                     goto cleanup_szDisplayName;
                 }
-#ifdef __GNUC__
+#if defined(__GNUC__) || defined(__clang__)
 /*
  * warning: enumeration value ‘MSICONDITION_TRUE’ not handled in switch
  * warning: enumeration value ‘MSICONDITION_NONE’ not handled in switch
@@ -806,7 +806,7 @@ 
                         free(szValue);
                         goto cleanup_szDisplayName;
                 }
-#ifdef __GNUC__
+#if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic pop
 #endif
                 free(szValue);
@@ -962,7 +962,7 @@ 
 UINT __stdcall
 ProcessDeferredAction(_In_ MSIHANDLE hInstall)
 {
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 #pragma comment(linker, DLLEXP_EXPORT)
 #endif
 
@@ -1162,7 +1162,7 @@ 
 UINT __stdcall
 CheckAndScheduleReboot(_In_ MSIHANDLE hInstall)
 {
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(__clang__)
 #pragma comment(linker, DLLEXP_EXPORT)
 #endif
 
diff --git a/src/openvpnmsica/openvpnmsica.h b/src/openvpnmsica/openvpnmsica.h
index 6640d7e..88780e8 100644
--- a/src/openvpnmsica/openvpnmsica.h
+++ b/src/openvpnmsica/openvpnmsica.h
@@ -66,7 +66,9 @@ 
 extern "C" {
 #endif
 
-#ifdef __GNUC__
+/* Ensure that clang-cl, which does not understand the #pragma comment(linker, ...)
+ * is handled the same way as mingw */
+#if defined(__GNUC__) || defined(__clang__)
 #define DLLEXP_DECL __declspec(dllexport)
 #else
 #define DLLEXP_DECL