From ffd3558641374cbbdbcaab93d9e9f53ace0eddeb Mon Sep 17 00:00:00 2001
From: "fennoai[bot]" <231223108+fennoai[bot]@users.noreply.github.com>
Date: Thu, 30 Jul 2026 11:47:26 +0000
Subject: [PATCH] feat(json-c): add json-c/json-c formula

Translate the Conan Center json-c recipe (snapshot
ffe30df101afd4dc95aac2f14b25bf345e64d7be, version 0.18) into an LLAR
Formula serving upstream tag json-c-0.18-20240915.

The build uses the CMake helper with the library-only configuration the
Conan recipe selects for its defaults: static archive with -fPIC,
BUILD_TESTING and BUILD_APPS off, and a normalized lib/ install layout.
Consumer metadata is derived from the installed json-c.pc pkg-config
file (static query, so the private -lm dependency is reported). onTest
compiles and runs the Conan test_package consumer against the installed
CMake package in a build tree independent of the onBuild scratch tree so
it also passes on a cache hit.

No dependencies: the upstream source and the Conan recipe declare none.

Co-authored-by: fennoai[bot] <231223108+fennoai[bot]@users.noreply.github.com>
Co-authored-by: MeteorsLiu <17515813+MeteorsLiu@users.noreply.github.com>
---
 .../json-c-0.18-20240915/Jsonc_llar.gox       | 91 +++++++++++++++++++
 json-c/json-c/versions.json                   |  4 +
 2 files changed, 95 insertions(+)
 create mode 100644 json-c/json-c/json-c-0.18-20240915/Jsonc_llar.gox
 create mode 100644 json-c/json-c/versions.json

diff --git a/json-c/json-c/json-c-0.18-20240915/Jsonc_llar.gox b/json-c/json-c/json-c-0.18-20240915/Jsonc_llar.gox
new file mode 100644
index 0000000..13e21ea
--- /dev/null
+++ b/json-c/json-c/json-c-0.18-20240915/Jsonc_llar.gox
@@ -0,0 +1,91 @@
+import (
+	"os"
+	"strings"
+)
+
+id "json-c/json-c"
+
+fromVer "json-c-0.18-20240915"
+
+onBuild ctx => {
+	installDir := ctx.outputDir
+	c := cmake.new(ctx.SourceDir, ctx.SourceDir+"/_build", installDir)
+
+	// Keep a standard lib/ layout so the installed pkg-config file and the
+	// dependency search paths resolve without lib64 handling.
+	c.define "CMAKE_INSTALL_LIBDIR", "lib"
+	// Build the static archive with position-independent code, matching the
+	// Conan recipe defaults (shared=False, fPIC=True). json-c builds its
+	// shared and static libraries from independent targets, so select the
+	// static one and leave DISABLE_STATIC_FPIC off to keep -fPIC.
+	c.defineBool "BUILD_SHARED_LIBS", false
+	c.defineBool "BUILD_STATIC_LIBS", true
+	c.defineBool "DISABLE_STATIC_FPIC", false
+	// Library-only install: skip the upstream test suite and CLI apps.
+	c.defineBool "BUILD_TESTING", false
+	c.defineBool "BUILD_APPS", false
+
+	c.configure
+	c.build
+	c.install
+
+	// Derive consumer flags from the installed pkg-config file. The static
+	// query also reports json-c's private math dependency (-lm on UNIX),
+	// which a static consumer must link.
+	c.use installDir
+	capout => {
+		exec "pkg-config", "--cflags", "--libs", "--static", "json-c"
+	}
+	if lastErr != nil {
+		panic lastErr
+	}
+	ctx.setMetadata strings.trimSpace(output)
+}
+
+onTest ctx => {
+	installDir := ctx.outputDir
+
+	// Build the consumer in a tree independent of the onBuild scratch tree so
+	// the test also runs on a cache hit, where onBuild is skipped.
+	testDir := ctx.SourceDir + "/_llar_consumer"
+	testBuild := testDir + "/_build"
+
+	// The consumer mirrors the Conan test_package: include <json-c/json.h>,
+	// link against json-c via its installed CMake package, then build a small
+	// JSON object to confirm the installed headers and library are usable.
+	source := `#include <json-c/json.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+    json_object *jobj = json_object_new_object();
+    json_object *jarray = json_object_new_array();
+    json_object_array_add(jarray, json_object_new_string("c"));
+    json_object_array_add(jarray, json_object_new_string("c++"));
+    json_object_object_add(jobj, "Categories", jarray);
+    printf("%s\n", json_object_to_json_string(jobj));
+    json_object_put(jobj);
+    return EXIT_SUCCESS;
+}
+`
+	os.mkdirAll(testDir, 0755)!
+	os.writeFile(testDir+"/consumer.c", []byte(source), 0644)!
+
+	cmakeLists := `cmake_minimum_required(VERSION 3.15)
+project(json_c_consumer LANGUAGES C)
+find_package(json-c REQUIRED CONFIG)
+add_executable(consumer consumer.c)
+target_link_libraries(consumer PRIVATE json-c::json-c)
+`
+	os.writeFile(testDir+"/CMakeLists.txt", []byte(cmakeLists), 0644)!
+
+	tc := cmake.new(testDir, testBuild, "")
+	tc.use installDir
+	tc.configure
+	tc.build
+
+	exec testBuild + "/consumer"
+	if lastErr != nil {
+		panic lastErr
+	}
+}
diff --git a/json-c/json-c/versions.json b/json-c/json-c/versions.json
new file mode 100644
index 0000000..59e1006
--- /dev/null
+++ b/json-c/json-c/versions.json
@@ -0,0 +1,4 @@
+{
+	"path": "json-c/json-c",
+	"deps": {}
+}