mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-12-25 17:34:23 +01:00
102 lines
3.6 KiB
CMake
102 lines
3.6 KiB
CMake
# Based on CMake's FindIconv.cmake
|
|
# Modified to prefer non-built-in iconv over the built-in one
|
|
# See https://gitlab.kitware.com/cmake/cmake/-/issues/24695 for details
|
|
# This file can be deleted once that issue has been closed and the fix has
|
|
# made it into a satisfactory number of cmake versions. FreeBSD is the only
|
|
# system known to hit this so far, so "satisfactory" can probably be defined
|
|
# as "enough that most FreeBSD users have a fixed cmake".
|
|
|
|
find_path(Iconv_INCLUDE_DIR
|
|
NAMES "iconv.h"
|
|
DOC "iconv include directory")
|
|
mark_as_advanced(Iconv_INCLUDE_DIR)
|
|
|
|
find_library(Iconv_LIBRARY
|
|
NAMES iconv libiconv
|
|
NAMES_PER_DIR
|
|
DOC "iconv library (if not in the C library)")
|
|
mark_as_advanced(Iconv_LIBRARY)
|
|
|
|
# iconv can only be provided in libc on a POSIX system.
|
|
if(UNIX AND (NOT Iconv_INCLUDE_DIR OR NOT Iconv_LIBRARY))
|
|
include(CMakePushCheckState)
|
|
include(CheckCXXSourceCompiles)
|
|
cmake_push_check_state(RESET)
|
|
# We always suppress the message here: Otherwise on supported systems
|
|
# not having iconv in their C library (e.g. those using libiconv)
|
|
# would always display a confusing "Looking for iconv - not found" message
|
|
set(CMAKE_FIND_QUIETLY TRUE)
|
|
# The following code will not work, but it's sufficient to see if it compiles.
|
|
# Note: libiconv will define the iconv functions as macros, so CheckSymbolExists
|
|
# will not yield correct results.
|
|
set(Iconv_IMPLICIT_TEST_CODE
|
|
"
|
|
#include <stddef.h>
|
|
#include <iconv.h>
|
|
int main() {
|
|
char *a, *b;
|
|
size_t i, j;
|
|
iconv_t ic;
|
|
ic = iconv_open(\"to\", \"from\");
|
|
iconv(ic, &a, &i, &b, &j);
|
|
iconv_close(ic);
|
|
}
|
|
"
|
|
)
|
|
check_cxx_source_compiles("${Iconv_IMPLICIT_TEST_CODE}" Iconv_IS_BUILT_IN)
|
|
cmake_pop_check_state()
|
|
if(Iconv_IS_BUILT_IN)
|
|
unset(Iconv_INCLUDE_DIR)
|
|
unset(Iconv_LIBRARY)
|
|
endif()
|
|
else()
|
|
set(Iconv_IS_BUILT_IN FALSE)
|
|
endif()
|
|
|
|
set(_Iconv_REQUIRED_VARS)
|
|
if(Iconv_IS_BUILT_IN)
|
|
set(_Iconv_REQUIRED_VARS _Iconv_IS_BUILT_IN_MSG)
|
|
set(_Iconv_IS_BUILT_IN_MSG "built in to C library")
|
|
else()
|
|
set(_Iconv_REQUIRED_VARS Iconv_LIBRARY Iconv_INCLUDE_DIR)
|
|
endif()
|
|
|
|
# NOTE: glibc's iconv.h does not define _LIBICONV_VERSION
|
|
if(Iconv_INCLUDE_DIR AND EXISTS "${Iconv_INCLUDE_DIR}/iconv.h")
|
|
file(STRINGS ${Iconv_INCLUDE_DIR}/iconv.h Iconv_VERSION_DEFINE REGEX "_LIBICONV_VERSION (.*)")
|
|
|
|
if(Iconv_VERSION_DEFINE MATCHES "(0x[A-Fa-f0-9]+)")
|
|
set(Iconv_VERSION_NUMBER "${CMAKE_MATCH_1}")
|
|
# encoding -> version number: (major<<8) + minor
|
|
math(EXPR Iconv_VERSION_MAJOR "${Iconv_VERSION_NUMBER} >> 8" OUTPUT_FORMAT HEXADECIMAL)
|
|
math(EXPR Iconv_VERSION_MINOR "${Iconv_VERSION_NUMBER} - (${Iconv_VERSION_MAJOR} << 8)" OUTPUT_FORMAT HEXADECIMAL)
|
|
|
|
math(EXPR Iconv_VERSION_MAJOR "${Iconv_VERSION_MAJOR}" OUTPUT_FORMAT DECIMAL)
|
|
math(EXPR Iconv_VERSION_MINOR "${Iconv_VERSION_MINOR}" OUTPUT_FORMAT DECIMAL)
|
|
set(Iconv_VERSION "${Iconv_VERSION_MAJOR}.${Iconv_VERSION_MINOR}")
|
|
endif()
|
|
|
|
unset(Iconv_VERSION_DEFINE)
|
|
unset(Iconv_VERSION_NUMBER)
|
|
endif()
|
|
|
|
include(FindPackageHandleStandardArgs)
|
|
find_package_handle_standard_args(Iconv
|
|
REQUIRED_VARS ${_Iconv_REQUIRED_VARS}
|
|
VERSION_VAR Iconv_VERSION)
|
|
|
|
if(Iconv_FOUND)
|
|
if(Iconv_IS_BUILT_IN)
|
|
set(Iconv_INCLUDE_DIRS "")
|
|
set(Iconv_LIBRARIES "")
|
|
else()
|
|
set(Iconv_INCLUDE_DIRS "${Iconv_INCLUDE_DIR}")
|
|
set(Iconv_LIBRARIES "${Iconv_LIBRARY}")
|
|
endif()
|
|
if(NOT TARGET Iconv::Iconv)
|
|
add_library(Iconv::Iconv INTERFACE IMPORTED)
|
|
set_property(TARGET Iconv::Iconv PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${Iconv_INCLUDE_DIRS}")
|
|
set_property(TARGET Iconv::Iconv PROPERTY INTERFACE_LINK_LIBRARIES "${Iconv_LIBRARIES}")
|
|
endif()
|
|
endif()
|