build: obtain zigcpp library prefix/suffix from cmake

Author: andrewrk

build.zig

@@ -537,7 +537,11 @@ fn addCmakeCfgOptionsToExe(
     exe.addObjectFile(fs.path.join(b.allocator, &[_][]const u8{
         cfg.cmake_binary_dir,
         "zigcpp",
-        b.fmt("{s}{s}{s}", .{ exe.target.libPrefix(), "zigcpp", exe.target.staticLibSuffix() }),
+        b.fmt("{s}{s}{s}", .{
+            cfg.cmake_static_library_prefix,
+            "zigcpp",
+            cfg.cmake_static_library_suffix,
+        }),
     }) catch unreachable);
     assert(cfg.lld_include_dir.len != 0);
     exe.addIncludePath(cfg.lld_include_dir);
@@ -669,6 +673,8 @@ const CMakeConfig = struct {
     llvm_linkage: std.build.LibExeObjStep.Linkage,
     cmake_binary_dir: []const u8,
     cmake_prefix_path: []const u8,
+    cmake_static_library_prefix: []const u8,
+    cmake_static_library_suffix: []const u8,
     cxx_compiler: []const u8,
     lld_include_dir: []const u8,
     lld_libraries: []const u8,
@@ -732,6 +738,8 @@ fn parseConfigH(b: *Builder, config_h_text: []const u8) ?CMakeConfig {
         .llvm_linkage = undefined,
         .cmake_binary_dir = undefined,
         .cmake_prefix_path = undefined,
+        .cmake_static_library_prefix = undefined,
+        .cmake_static_library_suffix = undefined,
         .cxx_compiler = undefined,
         .lld_include_dir = undefined,
         .lld_libraries = undefined,
@@ -751,6 +759,14 @@ fn parseConfigH(b: *Builder, config_h_text: []const u8) ?CMakeConfig {
             .prefix = "#define ZIG_CMAKE_PREFIX_PATH ",
             .field = "cmake_prefix_path",
         },
+        .{
+            .prefix = "#define ZIG_CMAKE_STATIC_LIBRARY_PREFIX ",
+            .field = "cmake_static_library_prefix",
+        },
+        .{
+            .prefix = "#define ZIG_CMAKE_STATIC_LIBRARY_SUFFIX ",
+            .field = "cmake_static_library_suffix",
+        },
         .{
             .prefix = "#define ZIG_CXX_COMPILER ",
             .field = "cxx_compiler",

stage1/config.h.in

@@ -15,16 +15,18 @@
 #define ZIG_VERSION_STRING "@ZIG_VERSION@"
 
 // Used by build.zig for communicating build information to self hosted build.
+#define ZIG_CLANG_LIBRARIES "@CLANG_LIBRARIES@"
 #define ZIG_CMAKE_BINARY_DIR "@CMAKE_BINARY_DIR@"
-#define ZIG_LLVM_LINK_MODE "@LLVM_LINK_MODE@"
 #define ZIG_CMAKE_PREFIX_PATH "@ZIG_CMAKE_PREFIX_PATH@"
+#define ZIG_CMAKE_STATIC_LIBRARY_PREFIX "@CMAKE_STATIC_LIBRARY_PREFIX@"
+#define ZIG_CMAKE_STATIC_LIBRARY_SUFFIX "@CMAKE_STATIC_LIBRARY_SUFFIX@"
 #define ZIG_CXX_COMPILER "@CMAKE_CXX_COMPILER@"
+#define ZIG_DIA_GUIDS_LIB "@ZIG_DIA_GUIDS_LIB_ESCAPED@"
 #define ZIG_LLD_INCLUDE_PATH "@LLD_INCLUDE_DIRS@"
 #define ZIG_LLD_LIBRARIES "@LLD_LIBRARIES@"
-#define ZIG_CLANG_LIBRARIES "@CLANG_LIBRARIES@"
 #define ZIG_LLVM_INCLUDE_PATH "@LLVM_INCLUDE_DIRS@"
-#define ZIG_LLVM_LIB_PATH "@LLVM_LIBDIRS@"
 #define ZIG_LLVM_LIBRARIES "@LLVM_LIBRARIES@"
-#define ZIG_DIA_GUIDS_LIB "@ZIG_DIA_GUIDS_LIB_ESCAPED@"
+#define ZIG_LLVM_LIB_PATH "@LLVM_LIBDIRS@"
+#define ZIG_LLVM_LINK_MODE "@LLVM_LINK_MODE@"
 
 #endif