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# Try pkg-config first, fall back to find_library
if(PkgConfig_FOUND)
pkg_check_modules(LIBGCRYPT QUIET IMPORTED_TARGET libgcrypt>=1.7.0)
if(LIBGCRYPT_FOUND AND NOT TARGET Gcrypt::Gcrypt)
add_library(Gcrypt::Gcrypt ALIAS PkgConfig::LIBGCRYPT)
endif()
endif()
if(NOT LIBGCRYPT_FOUND)
find_library(LIBGCRYPT_LIBRARIES gcrypt QUIET)
if(LIBGCRYPT_LIBRARIES)
find_path(LIBGCRYPT_INCLUDE_DIR gcrypt.h
HINTS /usr/include /usr/local/include)
if(LIBGCRYPT_INCLUDE_DIR)
file(STRINGS ${LIBGCRYPT_INCLUDE_DIR}/gcrypt.h GCSTR
REGEX "^#define GCRYPT_VERSION ")
string(REGEX REPLACE "^#define GCRYPT_VERSION \"(.*)\".*$" "\\1"
LIBGCRYPT_VERSION "${GCSTR}")
if(NOT LIBGCRYPT_VERSION VERSION_LESS "1.7.0")
set(LIBGCRYPT_FOUND TRUE)
if(NOT TARGET Gcrypt::Gcrypt)
add_library(Gcrypt::Gcrypt UNKNOWN IMPORTED)
set_target_properties(Gcrypt::Gcrypt PROPERTIES
IMPORTED_LOCATION "${LIBGCRYPT_LIBRARIES}"
INTERFACE_INCLUDE_DIRECTORIES "${LIBGCRYPT_INCLUDE_DIR}")
endif()
endif()
endif()
endif()
endif()
if(LIBGCRYPT_FOUND)
set(DISABLE_LIBGCRYPT FALSE CACHE BOOL "Disable libgcrypt support")
if(NOT DISABLE_LIBGCRYPT)
if(LIBGCRYPT_VERSION)
message(STATUS "libgcrypt support enabled (version ${LIBGCRYPT_VERSION})")
else()
message(STATUS "libgcrypt support enabled")
endif()
set(HAVE_LIBGCRYPT TRUE CACHE INTERNAL "libgcrypt cryptography support available")
else()
message(STATUS "libgcrypt support disabled by user")
unset(HAVE_LIBGCRYPT CACHE)
endif()
else()
message(STATUS "Install libgcrypt >= 1.7.0 to enable libgcrypt support")
unset(HAVE_LIBGCRYPT CACHE)
endif()
if(NOT HAVE_LIBGCRYPT)
set(LIBGCRYPT_LIBRARIES "")
set(LIBGCRYPT_INCLUDE_DIR "")
endif()
mark_as_advanced(LIBGCRYPT_LIBRARIES LIBGCRYPT_INCLUDE_DIR)
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