| Message ID | 20250808174828.236218-1-jan.vermaete@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | sdk: The main in the C example should return an int | expand |
On Fri, Aug 8, 2025 at 10:48 AM Jan Vermaete via lists.yoctoproject.org <jan.vermaete=gmail.com@lists.yoctoproject.org> wrote: > > see C17 (ISO/IEC 9899:2018) > > Signed-off-by: Jan Vermaete <jan.vermaete@gmail.com> > --- > documentation/sdk-manual/working-projects.rst | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/documentation/sdk-manual/working-projects.rst b/documentation/sdk-manual/working-projects.rst > index 4236bcec2..7df73b1b1 100644 > --- a/documentation/sdk-manual/working-projects.rst > +++ b/documentation/sdk-manual/working-projects.rst > @@ -56,9 +56,10 @@ project: > > #include <stdio.h> > > - main() > + int main() > { > printf("Hello World!\n"); > + return 0; > } > I will go a step further #include <stdio.h> int main(void) { printf("Hello World!\n"); return 0; } int main(void) explicitly states the function takes no parameters > - ``configure.ac``:: > -- > 2.39.5 > > > -=-=-=-=-=-=-=-=-=-=-=- > Links: You receive all messages sent to this group. > View/Reply Online (#7446): https://lists.yoctoproject.org/g/docs/message/7446 > Mute This Topic: https://lists.yoctoproject.org/mt/114604610/1997914 > Group Owner: docs+owner@lists.yoctoproject.org > Unsubscribe: https://lists.yoctoproject.org/g/docs/unsub [raj.khem@gmail.com] > -=-=-=-=-=-=-=-=-=-=-=- >
- "return 0" is optional in main after C99, so adding it is just personal preference but not strictly necessary - int main(void) and "int main()" are fully equivalent in C23, so changing this is also personal preference On Sat, Aug 9, 2025 at 4:48 AM Khem Raj via lists.yoctoproject.org <raj.khem=gmail.com@lists.yoctoproject.org> wrote: > On Fri, Aug 8, 2025 at 10:48 AM Jan Vermaete via > lists.yoctoproject.org <jan.vermaete=gmail.com@lists.yoctoproject.org> > wrote: > > > > see C17 (ISO/IEC 9899:2018) > > > > Signed-off-by: Jan Vermaete <jan.vermaete@gmail.com> > > --- > > documentation/sdk-manual/working-projects.rst | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > diff --git a/documentation/sdk-manual/working-projects.rst > b/documentation/sdk-manual/working-projects.rst > > index 4236bcec2..7df73b1b1 100644 > > --- a/documentation/sdk-manual/working-projects.rst > > +++ b/documentation/sdk-manual/working-projects.rst > > @@ -56,9 +56,10 @@ project: > > > > #include <stdio.h> > > > > - main() > > + int main() > > { > > printf("Hello World!\n"); > > + return 0; > > } > > > > > I will go a step further > > #include <stdio.h> > > int main(void) { > printf("Hello World!\n"); > return 0; > } > > int main(void) explicitly states the function takes no parameters > > > - ``configure.ac``:: > > -- > > 2.39.5 > > > > > > > > > > -=-=-=-=-=-=-=-=-=-=-=- > Links: You receive all messages sent to this group. > View/Reply Online (#7447): > https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.yoctoproject.org_g_docs_message_7447&d=DwIFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=Wr6Y2z0KzaAxCZ5tlqzjl7FhG_g1bUuEOT6AUyTYPNRZJqCnZHTFik8OoRKFmsdV&s=VeFiakPBZ2lD6GB4rKk9wgyvPjT5NnLtMkngVkCPcUY&e= > Mute This Topic: > https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.yoctoproject.org_mt_114604610_7048771&d=DwIFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=Wr6Y2z0KzaAxCZ5tlqzjl7FhG_g1bUuEOT6AUyTYPNRZJqCnZHTFik8OoRKFmsdV&s=_YRG74nRBir2XpojvNO2_Ql-6pOAuN6ghYEWvaWkFY4&e= > Group Owner: docs+owner@lists.yoctoproject.org > Unsubscribe: > https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.yoctoproject.org_g_docs_unsub&d=DwIFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=Wr6Y2z0KzaAxCZ5tlqzjl7FhG_g1bUuEOT6AUyTYPNRZJqCnZHTFik8OoRKFmsdV&s=WsKidALHg4Vou-YCH1sq9unNEfmLi-zpe-ED9HKD7tU&e= > [ecordonnier@snap.com] > -=-=-=-=-=-=-=-=-=-=-=- > >
Could be, but the example as it is now in the document is not longer compiling. Jan Vermaete “Success is a self-correcting phenomenom.” -- Gary Hamel On Mon, 11 Aug 2025 at 13:59, Etienne Cordonnier <ecordonnier@snap.com> wrote: > - "return 0" is optional in main after C99, so adding it is just personal > preference but not strictly necessary > - int main(void) and "int main()" are fully equivalent in C23, so changing > this is also personal preference > > On Sat, Aug 9, 2025 at 4:48 AM Khem Raj via lists.yoctoproject.org > <raj.khem=gmail.com@lists.yoctoproject.org> wrote: > >> On Fri, Aug 8, 2025 at 10:48 AM Jan Vermaete via >> lists.yoctoproject.org <jan.vermaete=gmail.com@lists.yoctoproject.org> >> wrote: >> > >> > see C17 (ISO/IEC 9899:2018) >> > >> > Signed-off-by: Jan Vermaete <jan.vermaete@gmail.com> >> > --- >> > documentation/sdk-manual/working-projects.rst | 3 ++- >> > 1 file changed, 2 insertions(+), 1 deletion(-) >> > >> > diff --git a/documentation/sdk-manual/working-projects.rst >> b/documentation/sdk-manual/working-projects.rst >> > index 4236bcec2..7df73b1b1 100644 >> > --- a/documentation/sdk-manual/working-projects.rst >> > +++ b/documentation/sdk-manual/working-projects.rst >> > @@ -56,9 +56,10 @@ project: >> > >> > #include <stdio.h> >> > >> > - main() >> > + int main() >> > { >> > printf("Hello World!\n"); >> > + return 0; >> > } >> > >> >> >> I will go a step further >> >> #include <stdio.h> >> >> int main(void) { >> printf("Hello World!\n"); >> return 0; >> } >> >> int main(void) explicitly states the function takes no parameters >> >> > - ``configure.ac``:: >> > -- >> > 2.39.5 >> > >> > >> > >> > >> >> -=-=-=-=-=-=-=-=-=-=-=- >> Links: You receive all messages sent to this group. >> > View/Reply Online (#7447): >> https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.yoctoproject.org_g_docs_message_7447&d=DwIFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=Wr6Y2z0KzaAxCZ5tlqzjl7FhG_g1bUuEOT6AUyTYPNRZJqCnZHTFik8OoRKFmsdV&s=VeFiakPBZ2lD6GB4rKk9wgyvPjT5NnLtMkngVkCPcUY&e= >> Mute This Topic: >> https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.yoctoproject.org_mt_114604610_7048771&d=DwIFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=Wr6Y2z0KzaAxCZ5tlqzjl7FhG_g1bUuEOT6AUyTYPNRZJqCnZHTFik8OoRKFmsdV&s=_YRG74nRBir2XpojvNO2_Ql-6pOAuN6ghYEWvaWkFY4&e= >> Group Owner: docs+owner@lists.yoctoproject.org >> Unsubscribe: >> https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.yoctoproject.org_g_docs_unsub&d=DwIFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=Wr6Y2z0KzaAxCZ5tlqzjl7FhG_g1bUuEOT6AUyTYPNRZJqCnZHTFik8OoRKFmsdV&s=WsKidALHg4Vou-YCH1sq9unNEfmLi-zpe-ED9HKD7tU&e= >> [ecordonnier@snap.com] >> -=-=-=-=-=-=-=-=-=-=-=- >> >>
"Could be, but the example as it is now in the document is not longer compiling." -> not because of a missing "return 0" or a lack of void keyword in main, so I don't know why you mention this. I agree that adding int as return type is necessary: "int main()", the other changes can be added, but is purely based on personal preference and not needed to fix the build. IMO "int main()" is better than "int main(void)", which is why this was changed in C23. On Mon, Aug 11, 2025 at 2:16 PM jan vermaete <jan.vermaete@gmail.com> wrote: > Could be, but the example as it is now in the document is not longer > compiling. > > Jan Vermaete > “Success is a self-correcting phenomenom.” -- Gary Hamel > > > On Mon, 11 Aug 2025 at 13:59, Etienne Cordonnier <ecordonnier@snap.com> > wrote: > >> - "return 0" is optional in main after C99, so adding it is just personal >> preference but not strictly necessary >> - int main(void) and "int main()" are fully equivalent in C23, so >> changing this is also personal preference >> >> On Sat, Aug 9, 2025 at 4:48 AM Khem Raj via lists.yoctoproject.org >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.yoctoproject.org&d=DwMFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=f-tqaJMvLQZsto9LmB4OqePZ_OjDN3dti7PPJVlvEhjKheIUAUdL0o3fi3YkQ4tk&s=3ohM9rWyyPHVETHCYT9vX7yeUFDmw-5TRFHoFHIPcO4&e=> >> <raj.khem=gmail.com@lists.yoctoproject.org> wrote: >> >>> On Fri, Aug 8, 2025 at 10:48 AM Jan Vermaete via >>> lists.yoctoproject.org >>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.yoctoproject.org&d=DwMFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=f-tqaJMvLQZsto9LmB4OqePZ_OjDN3dti7PPJVlvEhjKheIUAUdL0o3fi3YkQ4tk&s=3ohM9rWyyPHVETHCYT9vX7yeUFDmw-5TRFHoFHIPcO4&e=> >>> <jan.vermaete=gmail.com@lists.yoctoproject.org> >>> wrote: >>> > >>> > see C17 (ISO/IEC 9899:2018) >>> > >>> > Signed-off-by: Jan Vermaete <jan.vermaete@gmail.com> >>> > --- >>> > documentation/sdk-manual/working-projects.rst | 3 ++- >>> > 1 file changed, 2 insertions(+), 1 deletion(-) >>> > >>> > diff --git a/documentation/sdk-manual/working-projects.rst >>> b/documentation/sdk-manual/working-projects.rst >>> > index 4236bcec2..7df73b1b1 100644 >>> > --- a/documentation/sdk-manual/working-projects.rst >>> > +++ b/documentation/sdk-manual/working-projects.rst >>> > @@ -56,9 +56,10 @@ project: >>> > >>> > #include <stdio.h> >>> > >>> > - main() >>> > + int main() >>> > { >>> > printf("Hello World!\n"); >>> > + return 0; >>> > } >>> > >>> >>> >>> I will go a step further >>> >>> #include <stdio.h> >>> >>> int main(void) { >>> printf("Hello World!\n"); >>> return 0; >>> } >>> >>> int main(void) explicitly states the function takes no parameters >>> >>> > - ``configure.ac >>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__configure.ac&d=DwMFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=f-tqaJMvLQZsto9LmB4OqePZ_OjDN3dti7PPJVlvEhjKheIUAUdL0o3fi3YkQ4tk&s=j2m9TmXi_dMLEfSZID4zMoJqhFaWviDSvxcmjsPHbDE&e=> >>> ``:: >>> > -- >>> > 2.39.5 >>> > >>> > >>> > >>> > >>> >>> -=-=-=-=-=-=-=-=-=-=-=- >>> Links: You receive all messages sent to this group. >>> >> View/Reply Online (#7447): >>> https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.yoctoproject.org_g_docs_message_7447&d=DwIFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=Wr6Y2z0KzaAxCZ5tlqzjl7FhG_g1bUuEOT6AUyTYPNRZJqCnZHTFik8OoRKFmsdV&s=VeFiakPBZ2lD6GB4rKk9wgyvPjT5NnLtMkngVkCPcUY&e= >>> Mute This Topic: >>> https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.yoctoproject.org_mt_114604610_7048771&d=DwIFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=Wr6Y2z0KzaAxCZ5tlqzjl7FhG_g1bUuEOT6AUyTYPNRZJqCnZHTFik8OoRKFmsdV&s=_YRG74nRBir2XpojvNO2_Ql-6pOAuN6ghYEWvaWkFY4&e= >>> Group Owner: docs+owner@lists.yoctoproject.org >>> Unsubscribe: >>> https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.yoctoproject.org_g_docs_unsub&d=DwIFaQ&c=ncDTmphkJTvjIDPh0hpF_4vCHvabgGkICC2epckfdiw&r=AhkbNonVuMIGRfPx_Qj9TsRih1DULJTKUkSGa66m67E&m=Wr6Y2z0KzaAxCZ5tlqzjl7FhG_g1bUuEOT6AUyTYPNRZJqCnZHTFik8OoRKFmsdV&s=WsKidALHg4Vou-YCH1sq9unNEfmLi-zpe-ED9HKD7tU&e= >>> [ecordonnier@snap.com] >>> -=-=-=-=-=-=-=-=-=-=-=- >>> >>>
diff --git a/documentation/sdk-manual/working-projects.rst b/documentation/sdk-manual/working-projects.rst index 4236bcec2..7df73b1b1 100644 --- a/documentation/sdk-manual/working-projects.rst +++ b/documentation/sdk-manual/working-projects.rst @@ -56,9 +56,10 @@ project: #include <stdio.h> - main() + int main() { printf("Hello World!\n"); + return 0; } - ``configure.ac``::
see C17 (ISO/IEC 9899:2018) Signed-off-by: Jan Vermaete <jan.vermaete@gmail.com> --- documentation/sdk-manual/working-projects.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)