compliant with giteapc

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.16)
+project(Libcjpg VERSION 1.5.30 LANGUAGES C)
+find_package(Gint 2.7.1 REQUIRED)
+
+set(SOURCES
+	jcapimin.c 
+	jcapistd.c 
+	jdapimin.c 
+	jdapistd.c 
+	jcomapi.c 
+	jcparam.c 
+	jctrans.c 
+	jdtrans.c 
+	jcinit.c 
+	jcmaster.c 
+	jcmainct.c 
+	jcprepct.c 
+	jccoefct.c 
+	jccolor.c 
+	jcsample.c 
+	jcdctmgr.c 
+	jfdctint.c 
+	jfdctfst.c 
+	jfdctflt.c 
+	jchuff.c 
+	jcarith.c 
+	jcmarker.c 
+	jdatadst.c 
+	jdmaster.c 
+	jdinput.c 
+	jdmainct.c 
+	jdcoefct.c 
+	jdpostct.c 
+	jdmarker.c 
+	jdhuff.c 
+	jdarith.c 
+	jddctmgr.c 
+	jidctint.c 
+	jidctfst.c 
+	jidctflt.c 
+	jdsample.c 
+	jdcolor.c 
+	jdmerge.c 
+	jquant1.c 
+	jquant2.c 
+	jdatasrc.c 
+	jaricom.c 
+	jerror.c 
+	jmemmgr.c
+	jutils.c 
+	jmemname.c
+)
+include_directories(
+  "${PROJECT_SOURCE_DIR}"
+  "${PROJECT_BINARY_DIR}/include"
+  "${FXSDK_COMPILER_INSTALL}/include"
+  "${FXSDK_COMPILER_INSTALL}/include/openlibm")
+add_compile_options(-Os -lm -m4-nofpu -mb -std=c11 -ffreestanding -nostdlib -Wa,--dsp)
+# Target name is "cJPG", output file is "libcJPG.a" (by default)
+add_library(cJPG STATIC ${SOURCES})
+# After building, install the target (that is, libcJPG.a) in the compiler
+install(TARGETS cPNG
+  DESTINATION "${FXSDK_COMPILER_INSTALL}")
+# Install jpeglib.h from the build dir
+install(FILES "${PROJECT_SOURCE_DIR}/jpeglib.h"
+  DESTINATION "${FXSDK_COMPILER_INSTALL}/include")
+# Install jconfig.h from the build dir
+install(FILES "${PROJECT_SOURCE_DIR}/jconfig.h"
+  DESTINATION "${FXSDK_COMPILER_INSTALL}/include")
+# Install jmorecfg.h from the build dir
+install(FILES "${PROJECT_SOURCE_DIR}/jmorecfg.h"
+  DESTINATION "${FXSDK_COMPILER_INSTALL}/include")
+# Install jerror.h from the build dir
+install(FILES "${PROJECT_SOURCE_DIR}/jerror.h"
+  DESTINATION "${FXSDK_COMPILER_INSTALL}/include")
+# Install FindcPNG.cmake so that users can do find_package(LibcPNG)
+install(FILES cmake/FindcJPG.cmake
+  DESTINATION "${FXSDK_CMAKE_MODULE_PATH}")
+

cmake/FindcJPG.cmake

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+find_package(Gint 2.7 REQUIRED)
+# Find libexample.a; if we had platform-specific versions we could look for
+# libexample-${FXSDK_PLATFORM}.a instead.
+execute_process(
+  COMMAND ${CMAKE_C_COMPILER} -print-file-name=libcJPG.a
+  OUTPUT_VARIABLE EX_PATH OUTPUT_STRIP_TRAILING_WHITESPACE)
+# EX_PATH is now the full path if libustl.a exists, "libustl.a" otherwise
+if(NOT "${EX_PATH}" STREQUAL "libcPNG.a")
+  # Find the version.h header
+  execute_process(
+    COMMAND ${CMAKE_C_COMPILER} -print-file-name=include/jconfig.h
+    OUTPUT_VARIABLE EX_CONFIG OUTPUT_STRIP_TRAILING_WHITESPACE)
+  # Extract version information from the config.h header. This command prints
+  # the version on the line matching the regex and deletes every other line.
+  execute_process(
+    COMMAND sed -E "s/#define.*EX_VERSION\\s+\"(\\S+)\"$/\\1/p; d" ${EX_CONFIG}
+    OUTPUT_VARIABLE EX_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif()
+# The commands above seem common for gint libraries, so the fxSDK provides a
+# helper function to get that directly. We simply provide the archive name,
+# header file name, macro name, and names for output variables.
+#   include(FindSimpleLibrary)
+#   find_simple_library(libexample.a include/example/config.h "EX_VERSION"
+#     PATH_VAR EX_PATH VERSION_VAR EX_VERSION)
+# This CMake utility will handle the version comparisons and other checks. We
+# just specify:
+#   -> Some variables that are defined only if the library is found (so if
+#      they're undefined, CMake will conclude libexample was not found)
+#   -> The version, so CMake can compare with the user's requested one
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(libcJPG
+  REQUIRED_VARS EX_CONFIG EX_VERSION
+  VERSION_VAR EX_VERSION)
+# We now have a LibExample_FOUND variable, let's create the target that users
+# can link against with target_link_libraries()
+if(LibcJPG_FOUND)
+  # This is an imported target, we don't build it, we just claim it's here
+  add_library(libcJPG::libcJPG UNKNOWN IMPORTED)
+  # Here we declare the compiler and linker flags that every user of LibExample
+  # needs to use.
+  set_target_properties(libcJPG::libcJPG PROPERTIES
+    # If we specify where the library comes from, CMake will watch that file
+    # and relink any user application when the library is updated!
+    IMPORTED_LOCATION "${EX_PATH}"
+    # Linking options
+    INTERFACE_LINK_OPTIONS -lcJPG
+    # Dependencies (for order on the command-line)
+    IMPORTED_LINK_INTERFACE_LIBRARIES Gint::Gint)
+endif()