RE: FYI, the msys2 compilation approach is not working

[Freddie Akeroyd - STFC UKRI via Tech-talk <tech-talk at aps.anl.gov>]

Hi,

 

I’ve just installed the default gcc for the “MSYS2 MSYS” terminal and i get the same result as you for a gcc -v, so it looks like you build is somehow picking up the “MSYS2 MSYS” environment rather than “MSYS2 MinGW 64bit”

 

Regards,

 

Freddie

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Freddie Akeroyd - STFC UKRI via Tech-talk
Sent: 28 April 2025 18:24
To: Wang, Andrew <wang126 at llnl.gov>; EPICS tech-talk <tech-talk at aps.anl.gov>
Subject: RE: FYI, the msys2 compilation approach is not working

 

Hi,

 

Your gcc seems to be targetting    x86_64-pc-msys    whereas mine targets       x86_64-w64-mingw32      I think that may be the problem. For gcc -v I see

 

$ gcc -v

Using built-in specs.

COLLECT_GCC=C:\msys64\mingw64\bin\gcc.exe

COLLECT_LTO_WRAPPER=C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/lto-wrapper.exe

Target: x86_64-w64-mingw32

Configured with: ../gcc-14.2.0/configure --prefix=/mingw64 --with-local-prefix=/mingw64/local --buil

d=x86_64-w64-mingw32 --host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --with-native-system-head

er-dir=/mingw64/include --libexecdir=/mingw64/lib --enable-bootstrap --enable-checking=release --wit

h-arch=nocona --with-tune=generic --enable-mingw-wildcard --enable-languages=c,lto,c++,fortran,ada,o

bjc,obj-c++,rust,jit --enable-shared --enable-static --enable-libatomic --enable-threads=posix --ena

ble-graphite --enable-fully-dynamic-string --enable-libstdcxx-filesystem-ts --enable-libstdcxx-time

--disable-libstdcxx-pch --enable-lto --enable-libgomp --disable-libssp --disable-multilib --disable-

rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-libiconv --wi

th-system-zlib --with-gmp=/mingw64 --with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64 --wi

th-pkgversion='Rev3, Built by MSYS2 project' --with-bugurl=https://github.com/msys2/MINGW-packages/i

ssues --with-gnu-as --with-gnu-ld --disable-libstdcxx-debug --enable-plugin --with-boot-ldflags=-sta

tic-libstdc++ --with-stage1-ldflags=-static-libstdc++

Thread model: posix

Supported LTO compression algorithms: zlib zstd

gcc version 14.2.0 (Rev3, Built by MSYS2 project)

 

 

From: Wang, Andrew <wang126 at llnl.gov>
Sent: 28 April 2025 18:15
To: Akeroyd, Freddie (STFC,RAL,ISIS) <freddie.akeroyd at stfc.ac.uk>; EPICS tech-talk <tech-talk at aps.anl.gov>
Subject: RE: FYI, the msys2 compilation approach is not working

 

Using built-in specs.

COLLECT_GCC=gcc

COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-msys/13.3.0/lto-wrapper.exe

Target: x86_64-pc-msys

Configured with: /c/S/B/src/gcc-13.3.0/configure --build=x86_64-pc-msys --prefix=/usr --libexecdir=/usr/lib --enable-bootstrap --enable-static --enable-shared --enable-shared-libgcc --enable-version-specific-runtime-libs --with-arch=nocona --with-tune=generic --disable-multilib --enable-__cxa_atexit --with-dwarf2 --enable-languages=c,c++,lto --enable-graphite --enable-threads=posix --enable-libatomic --enable-libgomp --disable-libitm --enable-libquadmath --enable-libquadmath-support --disable-libssp --disable-win32-registry --disable-symvers --with-gnu-ld --with-gnu-as --disable-isl-version-check --enable-checking=release --without-libiconv-prefix --without-libintl-prefix --with-system-zlib --enable-linker-build-id --enable-libstdcxx-filesystem-ts

Thread model: posix

Supported LTO compression algorithms: zlib

gcc version 13.3.0 (GCC)

 

From: Freddie Akeroyd - STFC UKRI <freddie.akeroyd at stfc.ac.uk>
Sent: Monday, April 28, 2025 10:13 AM
To: Wang, Andrew <wang126 at llnl.gov>; EPICS tech-talk <tech-talk at aps.anl.gov>
Subject: RE: FYI, the msys2 compilation approach is not working

 

Hi,

 

The windows-x64 target is only for a visual studio windows build,  windows-x64-mingw is correct for MinGW. Can you just check that you ran this build from a “MSYS2 MinGW 64bit” window rather than a  “MSYS2 MSYS” terminal.  What does 

 

    gcc -v

 

Show?

 

Regards,

 

Freddie

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Wang, Andrew via Tech-talk
Sent: 28 April 2025 17:38
To: EPICS tech-talk <tech-talk at aps.anl.gov>
Subject: FYI, the msys2 compilation approach is not working

 

Hi all,

 

I’m following the instructions on this webpage for installing EPICS using msys2.

 

Everything worked fine up until the “Download and build EPICS Base” section. After running “export EPICS_HOST_ARCH=windows-x64-mingw”, I get the following errors. Do you suggest that I potentially change the architecture to windows-x64, rather than windows-x64-mingw?

 

../osi/os/WIN32/epicsTempFile.c: In function ‘epicsTempFile’:

../osi/os/WIN32/epicsTempFile.c:31:20: warning: implicit declaration of function ‘_tempnam’; did you mean ‘tempnam’? [-Wimplicit-function-declaration]

   31 |     char * pName = _tempnam("c:\\tmp", "epics");

      |                    ^~~~~~~~

      |                    tempnam

../osi/os/WIN32/epicsTempFile.c:31:20: warning: initialization of ‘char *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]

../osi/os/WIN32/epicsTempFile.c:45:24: error: ‘_O_CREAT’ undeclared (first use in this function); did you mean ‘O_CREAT’?

   45 |         int openFlag = _O_CREAT | _O_EXCL | _O_RDWR |

      |                        ^~~~~~~~

      |                        O_CREAT

../osi/os/WIN32/epicsTempFile.c:45:24: note: each undeclared identifier is reported only once for each function it appears in

../osi/os/WIN32/epicsTempFile.c:45:35: error: ‘_O_EXCL’ undeclared (first use in this function); did you mean ‘O_EXCL’?

   45 |         int openFlag = _O_CREAT | _O_EXCL | _O_RDWR |

      |                                   ^~~~~~~

      |                                   O_EXCL

../osi/os/WIN32/epicsTempFile.c:45:45: error: ‘_O_RDWR’ undeclared (first use in this function); did you mean ‘O_RDWR’?

   45 |         int openFlag = _O_CREAT | _O_EXCL | _O_RDWR |

      |                                             ^~~~~~~

      |                                             O_RDWR

../osi/os/WIN32/epicsTempFile.c:46:13: error: ‘_O_SHORT_LIVED’ undeclared (first use in this function)

   46 |             _O_SHORT_LIVED | _O_BINARY | _O_TEMPORARY;

      |             ^~~~~~~~~~~~~~

../osi/os/WIN32/epicsTempFile.c:46:30: error: ‘_O_BINARY’ undeclared (first use in this function); did you mean ‘O_BINARY’?

   46 |             _O_SHORT_LIVED | _O_BINARY | _O_TEMPORARY;

      |                              ^~~~~~~~~

      |                              O_BINARY

../osi/os/WIN32/epicsTempFile.c:46:42: error: ‘_O_TEMPORARY’ undeclared (first use in this function)

   46 |             _O_SHORT_LIVED | _O_BINARY | _O_TEMPORARY;

      |                                          ^~~~~~~~~~~~

../osi/os/WIN32/epicsTempFile.c:47:40: error: ‘_S_IWRITE’ undeclared (first use in this function); did you mean ‘S_IWRITE’?

   47 |         int fd = open(pName, openFlag, _S_IWRITE);

      |                                        ^~~~~~~~~

      |                                        S_IWRITE

../osi/os/WIN32/epicsTempFile.c:50:24: warning: implicit declaration of function ‘_fdopen’; did you mean ‘fdopen’? [-Wimplicit-function-declaration]

   50 |             pNewFile = _fdopen(fd, "w+b");

      |                        ^~~~~~~

      |                        fdopen

../osi/os/WIN32/epicsTempFile.c:50:22: warning: assignment to ‘FILE *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]

   50 |             pNewFile = _fdopen(fd, "w+b");

      |                      ^

gcc             -D_MINGW -D__USE_MINGW_ANSI_STDIO      -O3   -Wall      -m64    -DEPICS_BUILD_DLL -DEPICS_CALL_DLL   -I. -I../O.Common -I. -I../osi/compiler/gcc -I../osi/compiler/default -I. -I../osi/os/WIN32 -I../osi/os/default -I.. -I../as -I../bucketLib -I../calc -I../cvtFast -I../cppStd -I../cxxTemplates -I../dbmf -I../ellLib -I../env -I../error -I../fdmgr -I../flex -I../freeList -I../gpHash -I../iocsh -I../log -I../macLib -I../misc -I../osi -I../pool -I../ring -I../taskwd -I../timer -I../yacc -I../yacc -I../yajl -I../../../../include/compiler/gcc -I../../../../include/os/WIN32 -I../../../../include         -o ccl.obj -c ../flex/ccl.c

In file included from ../flex/flexdef.h:38,

                 from ../flex/ccl.c:29:

../osi/os/WIN32/osiUnistd.h:16:10: fatal error: direct.h: No such file or directory

   16 | #include <direct.h>

      |          ^~~~~~~~~~

compilation terminated.

make[4]: *** No rule to make target 'ccl.obj', needed by 'e_flex.exe'.  Stop.

make[4]: Leaving directory '/c/Users/wang126/base-R7.0.4.1/modules/libcom/src/O.windows-x64-mingw'

make[3]: *** [../../../configure/RULES_ARCHS:58: install.windows-x64-mingw] Error 2

make[3]: Leaving directory '/c/Users/wang126/base-R7.0.4.1/modules/libcom/src'

make[2]: *** [../../configure/RULES_DIRS:85: src.install] Error 2

make[2]: Leaving directory '/c/Users/wang126/base-R7.0.4.1/modules/libcom'

make[1]: *** [../configure/RULES_DIRS:85: libcom.install] Error 2

make[1]: Leaving directory '/c/Users/wang126/base-R7.0.4.1/modules'

make: *** [configure/RULES_DIRS:85: modules.install] Error 2

 

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