(#19942) imagl: Patching sources' CMakeLists.txt to use find_package …

…instead of legacy conan 1.X cmake generator

* Updating imagl recipe for conan 2.0

* adding src_folder parameter to cmake_layout to please linter

* Back to minimum conan 1.59

* Inspired by zlib recipe and now it passes v1 hooks.

* Do not use validate_build(), but validate() instead

* Applying jwillikers suggestions.

* Final endline added

* add cmake_find_package_multi generator as jwillikers suggests it.

Co-authored-by: Jordan Williams <jordan@jwillikers.com>

* Removing base_path from patches and a useless _cmake member of ImaglConan class

* -Switch to github URLs since my GitLab instance is temporarily down
-Change license name to uppercase

* Patching sources' CMakeLists.txt to make it compatible with conan 2.0+ by using find_package instead of old conan 1.X cmake generator

* new-line forgotten

* This time, one space too many...

---------

Co-authored-by: Jordan Williams <jordan@jwillikers.com>
Co-authored-by: Daniel <danimanzaneque@gmail.com>

recipes/imagl/all/conandata.yml

@@ -16,15 +16,27 @@ patches:
     - patch_file: "patches/0001-no-unmanaged-conan-0.1.x.patch"
       patch_description: "No unmanaged conan: update CMakeLists.txt remove call to conan"
       patch_type: conan
+    - patch_file: "patches/0002-use-findpackage-0.1.x.patch"
+      patch_description: "Use find_package: update CMakeLists.txt to use modern find_package compatible with conan 2.0"
+      patch_type: conan
   "0.1.1":
     - patch_file: "patches/0001-no-unmanaged-conan-0.1.x.patch"
       patch_description: "No unmanaged conan: update CMakeLists.txt remove call to conan"
       patch_type: conan
+    - patch_file: "patches/0002-use-findpackage-0.1.x.patch"
+      patch_description: "Use find_package: update CMakeLists.txt to use modern find_package compatible with conan 2.0"
+      patch_type: conan
   "0.1.2":
     - patch_file: "patches/0001-no-unmanaged-conan-0.1.x.patch"
       patch_description: "No unmanaged conan: update CMakeLists.txt remove call to conan"
       patch_type: conan
+    - patch_file: "patches/0002-use-findpackage-0.1.x.patch"
+      patch_description: "Use find_package: update CMakeLists.txt to use modern find_package compatible with conan 2.0"
+      patch_type: conan
   "0.2.1":
     - patch_file: "patches/0001-no-unmanaged-conan-0.2.1.patch"
       patch_description: "No unmanaged conan: update CMakeLists.txt remove call to conan"
       patch_type: conan
+    - patch_file: "patches/0002-use-findpackage-0.2.1.patch"
+      patch_description: "Use find_package: update CMakeLists.txt to use modern find_package compatible with conan 2.0"
+      patch_type: conan

recipes/imagl/all/patches/0002-use-findpackage-0.1.x.patch

@@ -0,0 +1,15 @@
+--- a/imaGL/CMakeLists.txt
++++ b/imaGL/CMakeLists.txt
+@@ -12,9 +12,10 @@ set_property(TARGET libImaGL PROPERTY OUTPUT_NAME imaGL)
+ set_property(TARGET libImaGL PROPERTY PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/public/imaGL/imaGL.h")
+ target_include_directories(libImaGL INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/public")
+
+-if(TARGET CONAN_PKG::libpng)
++find_package(PNG)
++if(PNG_FOUND)
+     add_compile_definitions(_HAS_PNG)
+-    target_link_libraries (libImaGL CONAN_PKG::libpng)
++    target_link_libraries (libImaGL PNG::PNG)
+ endif()
+
+ file(GLOB_RECURSE ImaGL_SRC "*.h" "*.cpp")

recipes/imagl/all/patches/0002-use-findpackage-0.2.1.patch

@@ -0,0 +1,23 @@
+--- a/imaGL/CMakeLists.txt
++++ b/imaGL/CMakeLists.txt
+@@ -12,14 +12,16 @@ set_property(TARGET libImaGL PROPERTY OUTPUT_NAME imaGL)
+ set_property(TARGET libImaGL PROPERTY PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/public/imaGL/imaGL.h")
+ target_include_directories(libImaGL INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/public")
+
+-if(TARGET CONAN_PKG::libpng)
++find_package(PNG)
++if(PNG_FOUND)
+     add_compile_definitions(_HAS_PNG)
+-    target_link_libraries (libImaGL CONAN_PKG::libpng)
++    target_link_libraries (libImaGL PNG::PNG)
+ endif()
+
+-if(TARGET CONAN_PKG::libjpeg)
++find_package(JPEG)
++if(JPEG_FOUND)
+     add_compile_definitions(_HAS_JPEG)
+-    target_link_libraries (libImaGL CONAN_PKG::libjpeg)
++    target_link_libraries (libImaGL JPEG::JPEG)
+ endif()
+
+ file(GLOB_RECURSE ImaGL_SRC "*.h" "*.cpp")