include(CheckIncludeFileCXX)
include(CheckCXXSourceCompiles)
include(CheckCXXSymbolExists)

# Note that the scope of the EXV_ variables in local
if (${EXIV2_ENABLE_WEBREADY})
    set(EXV_USE_CURL  ${EXIV2_ENABLE_CURL})
endif()
set(EXV_ENABLE_BMFF      ${EXIV2_ENABLE_BMFF})
set(EXV_ENABLE_WEBREADY  ${EXIV2_ENABLE_WEBREADY})
set(EXV_HAVE_LENSDATA    ${EXIV2_ENABLE_LENSDATA})

set(EXV_PACKAGE_NAME     ${PROJECT_NAME})
set(EXV_PACKAGE_VERSION  ${PROJECT_VERSION})
set(EXV_PACKAGE_STRING   "${PROJECT_NAME} ${PROJECT_VERSION}")
if (${EXIV2_ENABLE_XMP} OR ${EXIV2_ENABLE_EXTERNAL_XMP})
    set(EXV_HAVE_XMP_TOOLKIT ON)
else()
    set(EXV_HAVE_XMP_TOOLKIT OFF)
endif()
set(EXV_HAVE_ICONV       ${ICONV_FOUND})
set(EXV_HAVE_LIBZ        ${ZLIB_FOUND})

check_cxx_symbol_exists(mmap        sys/mman.h     EXV_HAVE_MMAP )
check_cxx_symbol_exists(munmap      sys/mman.h     EXV_HAVE_MUNMAP )
check_cxx_symbol_exists(strerror_r  string.h       EXV_HAVE_STRERROR_R )

check_cxx_source_compiles( "
#include <string.h>
int main() {
    char buff[100];
    const char* c = strerror_r(0,buff,100);
    (void)c;  // ignore unuse-variable
    return 0;
}" EXV_STRERROR_R_CHAR_P )

check_include_file_cxx( "libproc.h"     EXV_HAVE_LIBPROC_H )
check_include_file_cxx( "unistd.h"      EXV_HAVE_UNISTD_H )
check_include_file_cxx( "sys/mman.h"    EXV_HAVE_SYS_MMAN_H )

set(EXV_ENABLE_NLS ${EXIV2_ENABLE_NLS})

configure_file(cmake/config.h.cmake ${CMAKE_BINARY_DIR}/exv_conf.h @ONLY)