From 921f8b0df728222e8aa02f2e6324e1b57b440519 Mon Sep 17 00:00:00 2001
From: bfredl <bjorn.linse@gmail.com>
Date: Sun, 4 May 2025 09:49:10 +0200
Subject: [PATCH] fix(build): use correct cmake expression for $<CONFIG>

${CONFIG} is an empty string even when configuration is known at
configuration time. $<CONFIG> has to be used at "generation time"

Currently zig's reimplementation of cmake config headers does not
support $<CONFIG> so use a branch to pick the one which works.
---
 build.zig                    |  3 ++-
 cmake.config/versiondef.h.in |  6 +++++-
 src/versiondef.h.in          | 16 ----------------
 3 files changed, 7 insertions(+), 18 deletions(-)
 delete mode 100644 src/versiondef.h.in

diff --git a/build.zig b/build.zig
index 91f04fadf2..5c22bae260 100644
--- a/build.zig
+++ b/build.zig
@@ -153,11 +153,12 @@ pub fn build(b: *std.Build) !void {
         config_str = b.fmt("{s} -Dcross -Dtarget={s} (host: {s})", .{ config_str, try t.linuxTriple(b.allocator), try b.graph.host.result.linuxTriple(b.allocator) });
     }
 
-    const versiondef_step = b.addConfigHeader(.{ .style = .{ .cmake = b.path("src/versiondef.h.in") } }, .{
+    const versiondef_step = b.addConfigHeader(.{ .style = .{ .cmake = b.path("cmake.config/versiondef.h.in") } }, .{
         .NVIM_VERSION_MAJOR = version.major,
         .NVIM_VERSION_MINOR = version.minor,
         .NVIM_VERSION_PATCH = version.patch,
         .NVIM_VERSION_PRERELEASE = version.prerelease,
+        .NVIM_VERSION_MEDIUM = "",
         .VERSION_STRING = "TODO", // TODO(bfredl): not sure what to put here. summary already in "config_str"
         .CONFIG = config_str,
     });
diff --git a/cmake.config/versiondef.h.in b/cmake.config/versiondef.h.in
index ccb74b4151..c812ceddb1 100644
--- a/cmake.config/versiondef.h.in
+++ b/cmake.config/versiondef.h.in
@@ -12,6 +12,10 @@
 #endif
 
 #define NVIM_VERSION_CFLAGS "${VERSION_STRING}"
-#define NVIM_VERSION_BUILD_TYPE "${CONFIG}"
+#ifdef ZIG_BUILD
+# define NVIM_VERSION_BUILD_TYPE "${CONFIG}"
+#else
+# define NVIM_VERSION_BUILD_TYPE "$<CONFIG>"
+#endif
 
 #endif  // AUTO_VERSIONDEF_H
diff --git a/src/versiondef.h.in b/src/versiondef.h.in
deleted file mode 100644
index 32d9165244..0000000000
--- a/src/versiondef.h.in
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef AUTO_VERSIONDEF_H
-#define AUTO_VERSIONDEF_H
-
-#define NVIM_VERSION_MAJOR @NVIM_VERSION_MAJOR@
-#define NVIM_VERSION_MINOR @NVIM_VERSION_MINOR@
-#define NVIM_VERSION_PATCH @NVIM_VERSION_PATCH@
-#define NVIM_VERSION_PRERELEASE "@NVIM_VERSION_PRERELEASE@"
-
-#ifndef NVIM_VERSION_MEDIUM
-# include "auto/versiondef_git.h"
-#endif
-
-#define NVIM_VERSION_CFLAGS "${VERSION_STRING}"
-#define NVIM_VERSION_BUILD_TYPE "${CONFIG}"
-
-#endif  // AUTO_VERSIONDEF_H