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author | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | 2023-06-14 19:00:52 +0000 |
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committer | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | 2023-06-14 19:00:52 +0000 |
commit | 393664dfb259cb9acb6c98816304f164bd553659 (patch) | |
tree | d82c84c3120751035aebc6fd5151e0ebdb2bd385 /share/cmake-3.22/Modules/FindIconv.cmake | |
parent | de5fa1c66d3bdcbf2bbc62d2504ec6b0b0fb74e1 (diff) | |
parent | 001ed46e3703c78cbc3838adfe4c14ba279f9ff7 (diff) | |
download | linux-x86-393664dfb259cb9acb6c98816304f164bd553659.tar.gz |
Snap for 8997548 from 001ed46e3703c78cbc3838adfe4c14ba279f9ff7 to androidx-paging-releaseandroidx-paging-release
Change-Id: I16c4afe8c8418013ba71465e1a6aa39006d6a233
Diffstat (limited to 'share/cmake-3.22/Modules/FindIconv.cmake')
-rw-r--r-- | share/cmake-3.22/Modules/FindIconv.cmake | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/share/cmake-3.22/Modules/FindIconv.cmake b/share/cmake-3.22/Modules/FindIconv.cmake new file mode 100644 index 0000000..566330f --- /dev/null +++ b/share/cmake-3.22/Modules/FindIconv.cmake @@ -0,0 +1,182 @@ +# Distributed under the OSI-approved BSD 3-Clause License. See accompanying +# file Copyright.txt or https://cmake.org/licensing for details. + +#[=======================================================================[.rst: +FindIconv +--------- + +.. versionadded:: 3.11 + +This module finds the ``iconv()`` POSIX.1 functions on the system. +These functions might be provided in the regular C library or externally +in the form of an additional library. + +The following variables are provided to indicate iconv support: + +.. variable:: Iconv_FOUND + + Variable indicating if the iconv support was found. + +.. variable:: Iconv_INCLUDE_DIRS + + The directories containing the iconv headers. + +.. variable:: Iconv_LIBRARIES + + The iconv libraries to be linked. + +.. variable:: Iconv_VERSION + + .. versionadded:: 3.21 + + The version of iconv found (x.y) + +.. variable:: Iconv_VERSION_MAJOR + + .. versionadded:: 3.21 + + The major version of iconv + +.. variable:: Iconv_VERSION_MINOR + + .. versionadded:: 3.21 + + The minor version of iconv + +.. variable:: Iconv_IS_BUILT_IN + + A variable indicating whether iconv support is stemming from the + C library or not. Even if the C library provides `iconv()`, the presence of + an external `libiconv` implementation might lead to this being false. + +Additionally, the following :prop_tgt:`IMPORTED` target is being provided: + +.. variable:: Iconv::Iconv + + Imported target for using iconv. + +The following cache variables may also be set: + +.. variable:: Iconv_INCLUDE_DIR + + The directory containing the iconv headers. + +.. variable:: Iconv_LIBRARY + + The iconv library (if not implicitly given in the C library). + +.. note:: + On POSIX platforms, iconv might be part of the C library and the cache + variables ``Iconv_INCLUDE_DIR`` and ``Iconv_LIBRARY`` might be empty. + +.. note:: + Some libiconv implementations don't embed the version number in their header files. + In this case the variables ``Iconv_VERSION*`` will be empty. + +#]=======================================================================] + +include(${CMAKE_CURRENT_LIST_DIR}/CMakePushCheckState.cmake) +if(CMAKE_C_COMPILER_LOADED) + include(${CMAKE_CURRENT_LIST_DIR}/CheckCSourceCompiles.cmake) +elseif(CMAKE_CXX_COMPILER_LOADED) + include(${CMAKE_CURRENT_LIST_DIR}/CheckCXXSourceCompiles.cmake) +else() + # If neither C nor CXX are loaded, implicit iconv makes no sense. + set(Iconv_IS_BUILT_IN FALSE) +endif() + +# iconv can only be provided in libc on a POSIX system. +# If any cache variable is already set, we'll skip this test. +if(NOT DEFINED Iconv_IS_BUILT_IN) + if(UNIX AND NOT DEFINED Iconv_INCLUDE_DIR AND NOT DEFINED Iconv_LIBRARY) + cmake_push_check_state(RESET) + # We always suppress the message here: Otherwise on supported systems + # not having iconv in their C library (e.g. those using libiconv) + # would always display a confusing "Looking for iconv - not found" message + set(CMAKE_FIND_QUIETLY TRUE) + # The following code will not work, but it's sufficient to see if it compiles. + # Note: libiconv will define the iconv functions as macros, so CheckSymbolExists + # will not yield correct results. + set(Iconv_IMPLICIT_TEST_CODE + " + #include <stddef.h> + #include <iconv.h> + int main() { + char *a, *b; + size_t i, j; + iconv_t ic; + ic = iconv_open(\"to\", \"from\"); + iconv(ic, &a, &i, &b, &j); + iconv_close(ic); + } + " + ) + if(CMAKE_C_COMPILER_LOADED) + check_c_source_compiles("${Iconv_IMPLICIT_TEST_CODE}" Iconv_IS_BUILT_IN) + else() + check_cxx_source_compiles("${Iconv_IMPLICIT_TEST_CODE}" Iconv_IS_BUILT_IN) + endif() + cmake_pop_check_state() + else() + set(Iconv_IS_BUILT_IN FALSE) + endif() +endif() + +set(_Iconv_REQUIRED_VARS) +if(Iconv_IS_BUILT_IN) + set(_Iconv_REQUIRED_VARS _Iconv_IS_BUILT_IN_MSG) + set(_Iconv_IS_BUILT_IN_MSG "built in to C library") +else() + set(_Iconv_REQUIRED_VARS Iconv_LIBRARY Iconv_INCLUDE_DIR) + + find_path(Iconv_INCLUDE_DIR + NAMES "iconv.h" + DOC "iconv include directory") + set(Iconv_LIBRARY_NAMES "iconv" "libiconv") + mark_as_advanced(Iconv_INCLUDE_DIR) + + find_library(Iconv_LIBRARY + NAMES iconv libiconv + NAMES_PER_DIR + DOC "iconv library (if not in the C library)") + mark_as_advanced(Iconv_LIBRARY) +endif() + +# NOTE: glibc's iconv.h does not define _LIBICONV_VERSION +if(Iconv_INCLUDE_DIR AND EXISTS "${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}.${Iconv_VERSION_MINOR}") + endif() + + unset(Iconv_VERSION_DEFINE) + unset(Iconv_VERSION_NUMBER) +endif() + +include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) +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() |