From 268b6fb8c220d94c8be2ee648538c1561557afa4 Mon Sep 17 00:00:00 2001
From: Puck Meerburg <puck@puckipedia.com>
Date: Sun, 11 May 2025 22:21:07 +0000
Subject: [PATCH] (zilch lang ninja): support CMake

Change-Id: I6a6a696445c5513215b7e1df512514586a1dfd3a
---
 lang/ninja/src/build.sld   |  4 ++++
 lang/ninja/src/nixpkgs.sld | 18 ++++++++++++++----
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/lang/ninja/src/build.sld b/lang/ninja/src/build.sld
index e183441..06e4ff0 100644
--- a/lang/ninja/src/build.sld
+++ b/lang/ninja/src/build.sld
@@ -258,6 +258,10 @@
     (define copies (list))
     (define (process-input path)
      (define input-file (mapping-ref edges path (lambda () (mapping-ref/default edges (normalize-path path) #f))))
+     (define input-edge (force (cdr input-file)))
+     ; Passthru CMake library symlinks, as CMake assumes this is valid
+     (when (and input-edge (string=? (build-edge-rule (built-edge-edge input-edge)) "CMAKE_SYMLINK_LIBRARY"))
+      (for-each process-input (build-edge-inputs (built-edge-edge input-edge))))
      (if (eq? (car input-file) 'phony)
        (for-each process-input (built-edge-phony-inputs (force (cdr input-file))))
        (set! copies (cons #~,(string-append "mkdir -p \"$out/$(dirname " path ")\"; cp -rf " #$(force (car input-file)) " $out/" path) copies))))
diff --git a/lang/ninja/src/nixpkgs.sld b/lang/ninja/src/nixpkgs.sld
index f0ce4e6..bd3e97b 100644
--- a/lang/ninja/src/nixpkgs.sld
+++ b/lang/ninja/src/nixpkgs.sld
@@ -25,7 +25,7 @@
      "zilchPreConfigure() {\n"
       " cd $NIX_BUILD_TOP; mkdir bdir; mv $sourceRoot bdir/src; sourceRoot=bdir/src; cd $sourceRoot\n"
      "}\n"
-     "mesonBuildDir=$NIX_BUILD_TOP/bdir/build\n"
+     "mesonBuildDir=$NIX_BUILD_TOP/bdir/build cmakeBuildDir=$NIX_BUILD_TOP/bdir/build cmakeDir=\"$NIX_BUILD_TOP/bdir/src/${cmakeDir:-.}\"\n"
      "phases=\"${prePhases[*]:-} unpackPhase patchPhase ${preConfigurePhases[*]:-} zilchPreConfigure configurePhase ${preBuildPhases[*]:-}\"\n"
      "for curPhase in ${phases[*]}; do runPhase \"$curPhase\"; done\n"
      "find . '(' -name cmake_trace.txt -o -name meson-log.txt -o -name CMakeConfigureLog.yaml ')' -delete\n"
@@ -150,8 +150,7 @@
            "cp -rf --no-preserve=ownership " #$realised-built "/* bdir/build\n"
            "cd bdir/build\n"
           "}\n"
-          "mesonBuildDir=$NIX_BUILD_TOP/bdir/build\n"
-          "installPhase=zilchInstall; checkPhase=mesonCheckPhase\n"
+          "mesonBuildDir=$NIX_BUILD_TOP/bdir/build cmakeBuildDir=$NIX_BUILD_TOP/bdir/build cmakeDir=\"$NIX_BUILD_TOP/bdir/src/${cmakeDir:-.}\"\n"
           "zilchFixPlaceholder() {\n"
           " find ../out -type f -exec sed -i -e \"s|$1|$2|g\" \"{}\" \";\" || exit 1\n"
           " find \"../out\" -type l | while read link; do\n"
@@ -163,7 +162,7 @@
           fix-placeholders-command
           copy-in-place-command
           "}\n"
-          "zilchInstall() {\n"
+          "zilchMesonInstall() {\n"
           " runHook preInstall\n"
           " local flagsArray=()\n"
           " if [[ -n \"$mesonInstallTags\" ]]; then\n"
@@ -174,6 +173,17 @@
           " zilchFixup\n"
           " runHook postInstall\n"
           "}\n"
+          "zilchCmakeInstall() {\n"
+          " runHook preInstall\n"
+          " DESTDIR=$NIX_BUILD_TOP/bdir/out cmake --install .\n"
+          " zilchFixup\n"
+          " runHook postInstall\n"
+          "}\n"
+          "if [[ $(type -t mesonInstallPhase) == function ]]; then\n"
+          "  installPhase=zilchMesonInstall; checkPhase=mesonCheckPhase\n"
+          "else\n"
+          "  installPhase=zilchCmakeInstall; checkPhase=ninjaCheckPhase\n"
+          "fi\n"
           "phases=\"zilchPlace checkPhase ${preInstallPhases[*]:-} installPhase ${preFixupPhases[*]:-} fixupPhase installCheckPhase ${preDistPhases[*]:-} distPhase ${postPhases[*]:-}\"\n"
           "for curPhase in ${phases[*]}; do runPhase \"$curPhase\"; done\n"))