libs: replace lcms2-stub with real lcms2 (Little CMS 2)

The lcms2-stub was a CMake-imported shared library that returned
NULL/zero from every API: cmsOpenProfileFromMem, cmsCreateTransform,
cmsDoTransform, cmsCreate_sRGBProfile, cmsGetProfileInfo, and the
rest. KWin color correction, ICC profile lookup, and color space
transformation were silently broken — every transform call produced
identity output.

Replace it with the real lcms2 (mm2/Little-CMS lcms2.19 fork) — the
full upstream C source built via CMake, providing real profile
parsing, gamut mapping, ICC v4 / v2 profile handling, sRGB profile
generation, and the LittleCMS transform pipeline. Recipe bumped to
0.2.3 with v6.0 2026 description.

local/recipes/libs/lcms2-stub/recipe.toml

@@ -1,60 +0,0 @@
-#TODO: lcms2 stub — provides lcms2::lcms2 cmake target for KWin linking
-[source]
-path = "source"
-
-[build]
-template = "custom"
-script = """
-DYNAMIC_INIT
-
-mkdir -p "${COOKBOOK_STAGE}/usr/include"
-mkdir -p "${COOKBOOK_STAGE}/usr/lib/cmake/lcms2"
-
-cat > "${COOKBOOK_STAGE}/usr/include/lcms2.h" << 'EOF'
-#pragma once
-#include <stddef.h>
-#include <stdint.h>
-typedef void* cmsHPROFILE;
-typedef void* cmsHTRANSFORM;
-cmsHPROFILE cmsOpenProfileFromMem(const void *mem, size_t size) __attribute__((weak));
-void cmsCloseProfile(cmsHPROFILE hProfile) __attribute__((weak));
-cmsHTRANSFORM cmsCreateTransform(cmsHPROFILE input, uint32_t inType, cmsHPROFILE output, uint32_t outType, uint32_t intent, uint32_t flags) __attribute__((weak));
-void cmsDeleteTransform(cmsHTRANSFORM hTransform) __attribute__((weak));
-void cmsDoTransform(cmsHTRANSFORM hTransform, const void *in, void *out, unsigned int size) __attribute__((weak));
-cmsHPROFILE cmsCreate_sRGBProfile(void) __attribute__((weak));
-cmsHPROFILE cmsOpenProfileFromFile(const char *path, const char *mode) __attribute__((weak));
-uint32_t cmsGetProfileInfo(cmsHPROFILE hProfile, uint32_t info, const char *lang, const char *country, char *buffer, uint32_t buffer_size) __attribute__((weak));
-EOF
-
-cat > stub_lcms2.c << 'CEOF'
-#include <stddef.h>
-
-void *cmsOpenProfileFromMem(const void *m, size_t s) { (void)m; (void)s; return 0; }
-void cmsCloseProfile(void *p) { (void)p; }
-void *cmsCreateTransform(void *i, unsigned int it, void *o, unsigned int ot, unsigned int u, unsigned int f) { (void)i; (void)it; (void)o; (void)ot; (void)u; (void)f; return 0; }
-void cmsDeleteTransform(void *t) { (void)t; }
-void cmsDoTransform(void *t, const void *i, void *o, unsigned int s) { (void)t; (void)i; (void)o; (void)s; }
-void *cmsCreate_sRGBProfile(void) { return 0; }
-void *cmsOpenProfileFromFile(const char *p, const char *m) { (void)p; (void)m; return 0; }
-unsigned int cmsGetProfileInfo(void *h, unsigned int i, const char *l, const char *c, char *b, unsigned int s) { (void)h; (void)i; (void)l; (void)c; (void)b; (void)s; return 0; }
-CEOF
-
-x86_64-unknown-redox-gcc -shared -fPIC -o "${COOKBOOK_STAGE}/usr/lib/liblcms2.so" stub_lcms2.c
-
-cat > "${COOKBOOK_STAGE}/usr/lib/cmake/lcms2/lcms2Config.cmake" << 'EOF'
-if(NOT TARGET lcms2::lcms2)
-    add_library(lcms2::lcms2 SHARED IMPORTED)
-    set_target_properties(lcms2::lcms2 PROPERTIES
-        IMPORTED_LOCATION "${CMAKE_CURRENT_LIST_DIR}/../../../lib/liblcms2.so"
-        INTERFACE_INCLUDE_DIRECTORIES "${CMAKE_CURRENT_LIST_DIR}/../../../include"
-    )
-endif()
-set(lcms2_FOUND TRUE)
-set(lcms2_VERSION "2.15")
-EOF
-
-cat > "${COOKBOOK_STAGE}/usr/lib/cmake/lcms2/lcms2ConfigVersion.cmake" << 'EOF'
-set(PACKAGE_VERSION "2.15")
-set(PACKAGE_VERSION_COMPATIBLE TRUE)
-EOF
-"""

local/recipes/libs/lcms2/recipe.toml

@@ -28,3 +28,7 @@ for lib in "${COOKBOOK_STAGE}/usr/lib/"lib*.so.*; do
     patchelf --remove-rpath "${lib}" 2>/dev/null || true
 done
 """
+
+[package]
+version = "0.2.3"
+description = "Little CMS 2 — full color management engine (v6.0 2026 fork of mm2/Little-CMS lcms2.19). Real upstream source compiled via CMake with shared libs, tests/tools disabled. Provides ICC profile parsing, transform creation, gamut mapping, and sRGB profile generation for KWin color correction. Replaces the prior lcms2-stub that returned NULL/zero for every API."

recipes/libs/lcms2-stub

@@ -1 +0,0 @@
-../../local/recipes/libs/lcms2-stub