Subject: bug#30127: ICC: 'entry point must be defined' error for shared builds on Windows

From: Mathieu Lirzin <[email-masked]>
Date: Wed, 17 Jan 2018 23:57:18 +0100

Hello,

[email-masked] writes:

> For libiconv builds using Windows ICC got error:
> ===============================================================
> builddir="`pwd`"; cd libcharset && make all && make install-lib libdir="$builddir/lib" includedir="$builddir/lib"
> make[1]: Entering directory '/c/libICONV-1.15/build/libcharset'
> cd lib && make all
> make[2]: Entering directory '/c/libICONV-1.15/build/libcharset/lib'
> /bin/sh ../libtool --mode=link /c/libICONV-1.15/build/libcharset/../build-aux/compile icl -Zc:wchar_t -nologo -DWIN32 -D_WIN32 -DWIN64 -D_WIN64 -D_CRT_SECURE_NO_DEPRECATE
> -D_SCL_SECURE_NO_DEPRECATE -Od -Zi -GS -DDEBUG -D_DEBUG -MDd -o libcharset.la -rpath /c/libICONV-1.15/build/../ICC64DH/lib -version-info 1:0:0 -no-undefined localcharset.lo relocatable.lo
> libtool: link: rm -fr .libs/charset.exp
> libtool: link: /usr/bin/nm -B .libs/localcharset.obj .libs/relocatable.obj | sed -n -e 's/^.*[ ]\([ABCDGIRSTW][ABCDGIRSTW]*\)[ ][ ]*\([_A-Za-z][_A-Za-z0-9]*\)\{0,1\}$/\1 \2 \2/p' | sed '/ __gnu_lto/d' | /usr/bin/sed
> -e '/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1,DATA/' | /usr/bin/sed -e '/^[AITW][ ]/s/.*[ ]//' | sort | uniq > .libs/charset.exp
> libtool: link: if test DEF = "`/usr/bin/sed -n -e 's/^[ ]*//' -e '/^\(;.*\)*$/d' -e 's/^\(EXPORTS\|LIBRARY\)\([ ].*\)*$/DEF/p' -e q .libs/charset.exp`" ; then cp ".libs/charset.exp" ".libs/charset-1.dll.def"; echo
> ".libs\\charset-1.dll.def" > ".libs/charset-1.dll.exp"; else /usr/bin/sed -e 's/^/-link -EXPORT:/' < .libs/charset.exp > .libs/charset-1.dll.exp; fi
> libtool: link: /c/libICONV-1.15/build/libcharset/../build-aux/compile icl -o .libs\\charset-1.dll .libs/localcharset.obj .libs/relocatable.obj -Od "@.libs\\charset-1.dll.exp" -Wl,-DLL,-IMPLIB:".libs\\charset.lib"
> icl .libs\charset-1.dll .libs/localcharset.obj .libs/relocatable.obj -Od -Wl,-DLL,-IMPLIB:.libs\charset.lib
>
> Intel(R) C++ Intel(R) 64 Compiler for applications running on Intel(R) 64, Version 18.0.1.156 Build 20171018
> Copyright (C) 1985-2017 Intel Corporation. All rights reserved.
> icl: command line warning #10157: ignoring option '/W'; argument is of wrong type
>
> Microsoft (R) Incremental Linker Version 14.12.25830.2
> Copyright (C) Microsoft Corporation. All rights reserved.
>
> -out:.libs\charset-1.dll
> -EXPORT:DllMain
> -EXPORT:__local_stdio_printf_options
> -EXPORT:_vsnprintf_l
> -EXPORT:_vsprintf_l
> -EXPORT:libcharset_relocate
> -EXPORT:libcharset_set_relocation_prefix
> -EXPORT:locale_charset
> -EXPORT:sprintf
> -EXPORT:DllMain
> -EXPORT:__local_stdio_printf_options
> -EXPORT:_vsnprintf_l
> -EXPORT:_vsprintf_l
> -EXPORT:libcharset_relocate
> -EXPORT:libcharset_set_relocation_prefix
> -EXPORT:locale_charset
> -EXPORT:sprintf
> .libs/localcharset.obj
> .libs/relocatable.obj
> Creating library .libs\charset-1.lib and object .libs\charset-1.exp
> LINK : fatal error LNK1561: entry point must be defined
> make[2]: *** [Makefile:59: libcharset.la] Error 25
> make[2]: Leaving directory '/c/libICONV-1.15/build/libcharset/lib'
> make[1]: *** [Makefile:34: all] Error 2
> make[1]: Leaving directory '/c/libICONV-1.15/build/libcharset'
> make: *** [Makefile:42: lib/localcharset.h] Error 2
> ===============================================================
>
> which relate to missing Windows ICC support in 'compile' (http://git.savannah.gnu.org/cgit/automake.git/tree/lib/compile) script.
>
> Reproduced for:
> - shared builds using Windows ICC,
>
> not reproduced for:
> - static builds using Windows ICC,
> - shared builds using mingw-w64 and MSVC.
>
> Environment:
> - Windows 10 x64,
> - ICC 2018 Update 1,
> - MSVC 2017 15.5.0,
> - Windows SDK 10.0.16299.15,
> - mingw-w64 x86_64 7.2.0,
> - MSYS2 x86_64 20170918,
> - libiconv 1.15.
>
> The same error reproduced for shared builds of other OSS Projects with Autotools-based build systems.
>
> MSYS2 (msys2.org) Project provide a fix for 'compile' script, which they distribute:
> ===============================================================
> diff --git a/compile b/compile
> index 531136b..2be28ec 100644
> --- a/compile
> +++ b/compile
> @@ -255,7 +255,8 @@ EOF
> echo "compile $scriptversion"
> exit $?
> ;;
> - cl | *[/\\]cl | cl.exe | *[/\\]cl.exe )
> + cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
> + icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
> func_cl_wrapper "$@" # Doesn't return...
> ;;
> esac
> ===============================================================
>
> but it's not convenient to update build system of OSS Projects before each build.
> Can this fix be merged to Automake sources directly?

Indeed, The great news is that support for ‘icl’ has already been added
in Automake 1.15.1 [1].  :-)

Could you confirm it works correctly with Automake 1.15.1?

Note: When building libiconv you have to use ‘autoreconf -i’ or
something similar in order to have the local ‘compile’ script updated.

Thanks for the report.

[1] https://lists.gnu.org/archive/html/info-gnu/2017-06/msg00007.html

-- 
Mathieu Lirzin
GPG: F2A3 8D7E EB2B 6640 5761  070D 0ADE E100 9460 4D37