Building with CMake on Alpine (musl) fails (configure works, though) (Issue #25749)
Luke
lszl84 created an issue (wxWidgets/wxWidgets#25749)Build System Used
I build wxWidgets and/or my application using:
- CMake
- configure
- mingw32-make with makefile.gcc
- MSBuild (Microsoft Visual Studio solution file)
- nmake with makefile.vc
- Xcode
Description
When building with CMake, I get strtoul_l errors:
[563/976] Building CXX object libs/core/CMakeFiles/wxcore.dir/__/__/__/__/src/unix/fontenum.cpp.o
[564/976] Building CXX object libs/core/CMakeFiles/wxcore.dir/__/__/__/__/src/unix/dialup.cpp.o
ninja: job failed: /usr/bin/c++ -DWXBUILDING -DWXDLLNAME=wx_baseu-3.3 -DWXMAKINGDLL_BASE -DWX_PRECOMP -D_FILE_OFFSET_BITS=64 -D_UNICODE -D__WXGTK3__ -D__WXGTK__ -DwxUSE_BASE=1 -DwxUSE_GUI=0 -Dwxbase_EXPORTS -I/home/luke/Developer/wxbuild/lib/wx/include/gtk3-unicode-3.3 -I/home/luke/Developer/wxWidgets/include -g -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -Wall -Wundef -Wunused-parameter -Wno-ctor-dtor-privacy -Woverloaded-virtual -Winvalid-pch -include /home/luke/Developer/wxbuild/libs/base/CMakeFiles/wxbase.dir/cmake_pch.hxx -MD -MT libs/base/CMakeFiles/wxbase.dir/__/__/__/__/src/common/xlocale.cpp.o -MF libs/base/CMakeFiles/wxbase.dir/__/__/__/__/src/common/xlocale.cpp.o.d -o libs/base/CMakeFiles/wxbase.dir/__/__/__/__/src/common/xlocale.cpp.o -c /home/luke/Developer/wxWidgets/src/common/xlocale.cpp
In file included from /home/luke/Developer/wxWidgets/src/common/xlocale.cpp:29:
/home/luke/Developer/wxWidgets/include/wx/xlocale.h: In function 'long int wxStrtol_lA(const char*, char**, int, const wxXLocale&)':
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:240:45: error: 'strtol_l' was not declared in this scope; did you mean 'strtoll'?
240 | #define wxCRT_Strtol_lA wxXLOCALE_IDENT(strtol_l)
| ^~~~~~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:56:39: note: in definition of macro 'wxXLOCALE_IDENT'
56 | #define wxXLOCALE_IDENT(name) name
| ^~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:246:18: note: in expansion of macro 'wxCRT_Strtol_lA'
246 | { return wxCRT_Strtol_lA(c, endptr, base, loc.Get()); }
| ^~~~~~~~~~~~~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h: In function 'long unsigned int wxStrtoul_lA(const char*, char**, int, const wxXLocale&)':
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:241:46: error: 'strtoul_l' was not declared in this scope; did you mean 'strtoull'?
241 | #define wxCRT_Strtoul_lA wxXLOCALE_IDENT(strtoul_l)
| ^~~~~~~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:56:39: note: in definition of macro 'wxXLOCALE_IDENT'
56 | #define wxXLOCALE_IDENT(name) name
| ^~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:248:18: note: in expansion of macro 'wxCRT_Strtoul_lA'
248 | { return wxCRT_Strtoul_lA(c, endptr, base, loc.Get()); }
| ^~~~~~~~~~~~~~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h: In function 'double wxStrtod_l(const wchar_t*, wchar_t**, const wxXLocale&)':
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:295:45: error: 'wcstod_l' was not declared in this scope; did you mean 'wcstoull'?
295 | #define wxCRT_Strtod_lW wxXLOCALE_IDENT(wcstod_l)
| ^~~~~~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:56:39: note: in definition of macro 'wxXLOCALE_IDENT'
56 | #define wxXLOCALE_IDENT(name) name
| ^~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:300:18: note: in expansion of macro 'wxCRT_Strtod_lW'
300 | { return wxCRT_Strtod_lW(c, endptr, loc.Get()); }
| ^~~~~~~~~~~~~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h: In function 'long int wxStrtol_l(const wchar_t*, wchar_t**, int, const wxXLocale&)':
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:296:45: error: 'wcstol_l' was not declared in this scope; did you mean 'wcstoll'?
296 | #define wxCRT_Strtol_lW wxXLOCALE_IDENT(wcstol_l)
| ^~~~~~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:56:39: note: in definition of macro 'wxXLOCALE_IDENT'
56 | #define wxXLOCALE_IDENT(name) name
| ^~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:302:18: note: in expansion of macro 'wxCRT_Strtol_lW'
302 | { return wxCRT_Strtol_lW(c, endptr, base, loc.Get()); }
| ^~~~~~~~~~~~~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h: In function 'long unsigned int wxStrtoul_l(const wchar_t*, wchar_t**, int, const wxXLocale&)':
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:297:46: error: 'wcstoul_l' was not declared in this scope; did you mean 'wcstoull'?
297 | #define wxCRT_Strtoul_lW wxXLOCALE_IDENT(wcstoul_l)
| ^~~~~~~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:56:39: note: in definition of macro 'wxXLOCALE_IDENT'
56 | #define wxXLOCALE_IDENT(name) name
| ^~~~
/home/luke/Developer/wxWidgets/include/wx/xlocale.h:304:18: note: in expansion of macro 'wxCRT_Strtoul_lW'
304 | { return wxCRT_Strtoul_lW(c, endptr, base, loc.Get()); }
| ^~~~~~~~~~~~~~~~
ninja: subcommand failed
~/Developer/wxbuild $ c++ --version
c++ (Alpine 14.2.0) 14.2.0
Copyright (C) 2024 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
~/Developer/wxbuild $ cc --version
cc (Alpine 14.2.0) 14.2.0
Copyright (C) 2024 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
~/Developer/wxbuild $ uname -a
Linux alpine 6.12.44-0-lts #1-Alpine SMP PREEMPT_DYNAMIC 2025-08-29 07:25:37 x86_64 Linux
Using instructions from https://docs.wxwidgets.org/latest/overview_cmake.html:
cd wxbuild cmake -G "Ninja" ~/Developer/wxWidgets cmake --build . -j
Interestingly, everything works well when using the configure script as described here https://wiki.wxwidgets.org/Compiling_and_getting_started
cd wxWidgets
mkdir gtk-build
cd gtk-build
../configure
make -j3
Platform and version information
- wxWidgets version you are building: current master
- wxWidgets port you are building: wxGTK
- OS and its version: Linux alpine 6.12.44-0-lts
- Compiler being used: gcc 14.2
- Non-default compiler options, if any :
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VZ
vadz left a comment (wxWidgets/wxWidgets#25749)I think musl (used in Alpine) doesn't actually have xlocale support, so something must be wrong with the test for it in build/cmake/setup.cmake. In fact, it looks like we don't do anything with the result of the test, I think we need to reset wxUSE_XLOCALE to 0 if(NOT HAVE_LOCALE_T) or something like that. Should be simple to fix, if you can test it.
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Maarten
MaartenBent left a comment (wxWidgets/wxWidgets#25749)CMake does use the results of HAVE_XLOCALE_H and HAVE_LOCALE_T, their values are used when generating setup.h from setup.h.in.
And apparently HAVE_LOCALE_T is 1/TRUE, because this will define wxHAS_XLOCALE_SUPPORT in wx/featrues.h, which will then enable the code in wx/xlocale.h.
What is the CMake output when configuring?
Looking for xlocale.h
Looking for xlocale.h - not found
Check size of locale_t
Check size of locale_t - failed
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VZ
vadz left a comment (wxWidgets/wxWidgets#25749)I had Alpine 3.19 container lying around, so I ran cmake in it and got
-- Looking for xlocale.h
-- Looking for xlocale.h - not found
-- Check size of locale_t
-- Check size of locale_t - done
and I can confirm that the build fails with the error given here afterwards. Looking...
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VZ
vadz left a comment (wxWidgets/wxWidgets#25749)... OK, so musl does define locale_t but doesn't define any of strxxx_l() and cmake, unlike configure, doesn't check for them. I'll add this.
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VZ
Closed #25749 as completed via 170c386.
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