I am quite new to C++ and have been trying to use the ICU library for the past few days. I have followed this guide on the ICU GitHub, to little avail.
I found that I can #include <icu.h> natively, but I am not sure what functionality that provides, and how to use it, and the file looks stripped. This page discusses how it is used on Windows, but it is not particularly specific.
I tried installing it following the instructions on GitHub with Cygwin. The installation for VS2022 seems to require Cygwin . I was unsuccessful, getting this output.
PS C:\Users\user\Dev\ICU\icu\source> bash ./runConfigureICU Cygwin/MSVC
export CPP= CC=cl CXX=cl CPPFLAGS= CFLAGS=-Gy -MD CXXFLAGS=-Gy -MD LDFLAGS= MAKE=
Running ./configure for Windows with Cygwin using Microsoft Visual C++ compiler
checking for ICU version numbers... release 73.1, library 73.1, unicode version 15.0
checking build system type... x86_64-unknown-cygwin
checking host system type... x86_64-unknown-cygwin
checking whether to build debug libraries... no
checking whether to build release libraries... yes
checking whether the C compiler works... no
configure: error: in `/cygdrive/c/Users/user/Dev/ICU/icu/source':
configure: error: C compiler cannot create executables
See `config.log' for more details
./runConfigureICU: ./configure failed
config.log
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
It was created by ICU configure 73.1, which was
generated by GNU Autoconf 2.69. Invocation command line was
$ ./configure
## --------- ##
## Platform. ##
## --------- ##
hostname = desktop
uname -m = x86_64
uname -r = 3.4.6-1.x86_64
uname -s = CYGWIN_NT-10.0-22621
uname -v = 2023-02-14 13:23 UTC
/usr/bin/uname -p = unknown
/bin/uname -X = unknown
/bin/arch = x86_64
/usr/bin/arch -k = unknown
/usr/convex/getsysinfo = unknown
/usr/bin/hostinfo = unknown
/bin/machine = unknown
/usr/bin/oslevel = unknown
/bin/universe = unknown
PATH: /cygdrive/c/Program Files/Eclipse Adoptium/jre-17.0.7.7-hotspot/bin
PATH: /cygdrive/c/windows/system32
PATH: /cygdrive/c/windows
PATH: /cygdrive/c/windows/System32/Wbem
PATH: /cygdrive/c/windows/System32/WindowsPowerShell/v1.0
PATH: /cygdrive/c/windows/System32/OpenSSH
PATH: /cygdrive/c/Program Files/Microsoft VS Code/bin
PATH: /cygdrive/c/Program Files/dotnet
PATH: /cygdrive/c/Program Files/Git/cmd
PATH: /usr/bin
PATH: /cygdrive/c/Program Files/CMake/bin
PATH: /cygdrive/c/Users/user/AppData/Local/Microsoft/WindowsApps
PATH: /cygdrive/c/Users/user/.dotnet/tools
## ----------- ##
## Core tests. ##
## ----------- ##
configure:2706: checking for ICU version numbers
configure:2739: result: release 73.1, library 73.1, unicode version 15.0
configure:2778: checking build system type
configure:2792: result: x86_64-unknown-cygwin
configure:2812: checking host system type
configure:2825: result: x86_64-unknown-cygwin
configure:2883: checking whether to build debug libraries
configure:2895: result: no
configure:2900: checking whether to build release libraries
configure:2912: result: yes
configure:3033: checking for C compiler version
configure:3042: cl --version >&5
./configure: line 3044: cl: command not found
configure:3053: $? = 127
configure:3042: cl -v >&5
./configure: line 3044: cl: command not found
configure:3053: $? = 127
configure:3042: cl -V >&5
./configure: line 3044: cl: command not found
configure:3053: $? = 127
configure:3042: cl -qversion >&5
./configure: line 3044: cl: command not found
configure:3053: $? = 127
configure:3073: checking whether the C compiler works
configure:3095: cl -Gy -MD conftest.c >&5
./configure: line 3097: cl: command not found
configure:3099: $? = 127
configure:3137: result: no
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "ICU"
| #define PACKAGE_TARNAME "International Components for Unicode"
| #define PACKAGE_VERSION "73.1"
| #define PACKAGE_STRING "ICU 73.1"
| #define PACKAGE_BUGREPORT "http://icu-project.org/bugs"
| #define PACKAGE_URL "http://icu-project.org"
| /* end confdefs.h. */
|
| int
| main ()
| {
|
| ;
| return 0;
| }
configure:3142: error: in `/cygdrive/c/Users/user/Dev/ICU/icu/source':
configure:3144: error: C compiler cannot create executables
See `config.log' for more details
## ---------------- ##
## Cache variables. ##
## ---------------- ##
ac_cv_build=x86_64-unknown-cygwin
ac_cv_env_build_alias_set=
ac_cv_env_build_alias_value=
ac_cv_env_CC_set=set
ac_cv_env_CC_value=cl
ac_cv_env_CCC_set=
ac_cv_env_CCC_value=
ac_cv_env_CFLAGS_set=set
ac_cv_env_CFLAGS_value='-Gy -MD '
ac_cv_env_CPP_set=
ac_cv_env_CPP_value=
ac_cv_env_CPPFLAGS_set=
ac_cv_env_CPPFLAGS_value=
ac_cv_env_CXX_set=set
ac_cv_env_CXX_value=cl
ac_cv_env_CXXFLAGS_set=set
ac_cv_env_CXXFLAGS_value='-Gy -MD '
ac_cv_env_host_alias_set=
ac_cv_env_host_alias_value=
ac_cv_env_ICULEHB_CFLAGS_set=
ac_cv_env_ICULEHB_CFLAGS_value=
ac_cv_env_ICULEHB_LIBS_set=
ac_cv_env_ICULEHB_LIBS_value=
ac_cv_env_LDFLAGS_set=
ac_cv_env_LDFLAGS_value=
ac_cv_env_LIBS_set=
ac_cv_env_LIBS_value=
ac_cv_env_PKG_CONFIG_LIBDIR_set=
ac_cv_env_PKG_CONFIG_LIBDIR_value=
ac_cv_env_PKG_CONFIG_PATH_set=
ac_cv_env_PKG_CONFIG_PATH_value=
ac_cv_env_PKG_CONFIG_set=
ac_cv_env_PKG_CONFIG_value=
ac_cv_env_target_alias_set=
ac_cv_env_target_alias_value=
ac_cv_host=x86_64-unknown-cygwin
## ----------------- ##
## Output variables. ##
## ----------------- ##
ac_ct_CC=''
ac_ct_CXX=''
AR=''
ARFLAGS=''
bindir='${exec_prefix}/bin'
build_alias=''
build_cpu='x86_64'
build_os='cygwin'
build_vendor='unknown'
build='x86_64-unknown-cygwin'
CC='cl'
CFLAGS='-Gy -MD '
COMPILE_LINK_ENVVAR=''
CPP=''
CPPFLAGS=''
cross_buildroot=''
cross_compiling='no'
CXX='cl'
CXXFLAGS='-Gy -MD '
DATA_PACKAGING_MODE=''
DATA_TRUE=''
datadir='${datarootdir}'
datarootdir='${prefix}/share'
DEFS=''
docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
DOXYGEN=''
dvidir='${docdir}'
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EGREP=''
ENABLE_DEBUG='0'
ENABLE_RELEASE='1'
ENABLE_RPATH=''
ENABLE_SHARED=''
ENABLE_STATIC=''
exec_prefix='NONE'
EXEEXT=''
EXTRAS_TRUE=''
FUZZER_TRUE=''
GENCCODE_ASSEMBLY=''
GREP=''
HAVE_MMAP=''
host_alias=''
host_cpu='x86_64'
host_os='cygwin'
host_vendor='unknown'
host='x86_64-unknown-cygwin'
htmldir='${docdir}'
ICU_ECHO_C=''
ICU_ECHO_N='-n'
ICU_ECHO_T=''
ICUDATA_CHAR=''
ICUIO_TRUE=''
ICULEHB_CFLAGS=''
ICULEHB_LIBS=''
ICULIBSUFFIX=''
ICULIBSUFFIXCNAME=''
includedir='${prefix}/include'
infodir='${datarootdir}/info'
INSTALL_DATA=''
INSTALL_ICU_CONFIG='true'
INSTALL_PROGRAM=''
INSTALL_SCRIPT=''
LAYOUTEX_TRUE=''
LDFLAGS=''
LIB_M=''
LIB_THREAD=''
LIB_VERSION_MAJOR='73'
LIB_VERSION='73.1'
LIBCFLAGS=''
LIBCXXFLAGS=''
libdir='${exec_prefix}/lib'
libexecdir='${exec_prefix}/libexec'
LIBOBJS=''
LIBS=''
localedir='${datarootdir}/locale'
localstatedir='${prefix}/var'
LTLIBOBJS=''
mandir='${datarootdir}/man'
OBJEXT=''
oldincludedir='/usr/include'
PACKAGE_BUGREPORT='http://icu-project.org/bugs'
PACKAGE_NAME='ICU'
PACKAGE_STRING='ICU 73.1'
PACKAGE_TARNAME='International Components for Unicode'
PACKAGE_URL='http://icu-project.org'
PACKAGE_VERSION='73.1'
PACKAGE='icu'
PATH_SEPARATOR=':'
pdfdir='${docdir}'
PKG_CONFIG_LIBDIR=''
PKG_CONFIG_PATH=''
PKG_CONFIG=''
pkgicudatadir=''
platform_make_fragment_name=''
platform_make_fragment=''
platform=''
PLUGINS_TRUE=''
prefix='NONE'
program_transform_name='s,x,x,'
psdir='${docdir}'
PYTHON=''
RANLIB=''
runstatedir='${localstatedir}/run'
SAMPLES_TRUE=''
sbindir='${exec_prefix}/sbin'
SED=''
sharedstatedir='${prefix}/com'
SHELL='/bin/sh'
sysconfdir='${prefix}/etc'
target_alias=''
TESTS_TRUE=''
thepkgicudatadir=''
TOOLS_TRUE=''
U_DEFAULT_SHOW_DRAFT=''
U_DISABLE_RENAMING=''
U_ENABLE_DYLOAD=''
U_ENABLE_TRACING=''
U_HAVE_DATA=''
U_HAVE_DIRENT_H=''
U_HAVE_EXTRAS=''
U_HAVE_FUZZER=''
U_HAVE_ICUIO=''
U_HAVE_INTTYPES_H=''
U_HAVE_LAYOUTEX=''
U_HAVE_LIB_SUFFIX=''
U_HAVE_NL_LANGINFO_CODESET=''
U_HAVE_PLACEMENT_NEW=''
U_HAVE_PLUGINS=''
U_HAVE_POPEN=''
U_HAVE_SAMPLES=''
U_HAVE_STRTOD_L=''
U_HAVE_TESTS=''
U_HAVE_TIMEZONE=''
U_HAVE_TOOLS=''
U_HAVE_TZNAME=''
U_HAVE_TZSET=''
U_HAVE_WCHAR_H=''
U_HAVE_WCSCPY=''
U_IS_BIG_ENDIAN=''
U_MAKE=''
U_NL_LANGINFO_CODESET=''
U_OVERRIDE_CXX_ALLOCATION=''
U_TIMEZONE=''
U_TZNAME=''
U_TZSET=''
UCLN_NO_AUTO_CLEANUP=''
UCONFIG_CFLAGS=''
UCONFIG_CPPFLAGS=''
UCONFIG_CXXFLAGS=''
UNICODE_VERSION='15.0'
VERSION='73.1'
## ----------- ##
## confdefs.h. ##
## ----------- ##
/* confdefs.h */
#define PACKAGE_NAME "ICU"
#define PACKAGE_TARNAME "International Components for Unicode"
#define PACKAGE_VERSION "73.1"
#define PACKAGE_STRING "ICU 73.1"
#define PACKAGE_BUGREPORT "http://icu-project.org/bugs"
#define PACKAGE_URL "http://icu-project.org"
configure: exit 77
