Mark Klik
2019-Jun-04 09:14 UTC
[Rd] undefined symbol errors when compiling package using ALTREP API
Hello, I'm developing a package (lazyvec) that makes full use of the ALTREP framework (R >= 3.6.0). One application of the package is to wrap existing ALTREP vectors in a new ALTREP vector and pass all calls from R to the contained object. The purpose of this is to provide a diagnostic framework for working with ALTREP vectors and show information about internal calls. The package builds on Windows and OSX but fails to build on Linux as can be seen from the link to the Travis build: https://travis-ci.org/fstpackage/lazyvec/jobs/539442806 The reason of build failure is that many ALTREP methods generate 'undefined symbol' errors upon building the package (on Linux). I've checked the R source code and the undefined symbols seems to be related to the 'attribute_hidden' before the function definition. For example, the method 'ALTVEC_EXTRACT_SUBSET' is defined as: SEXP attribute_hidden ALTVEC_EXTRACT_SUBSET(SEXP x, SEXP indx, SEXP call) My question is why these differences between Windows / OSX and Linux exist and if they are intentional? Do I need special build parameters to make sure my package builds correctly on Linux? thanks for all the hard work! best, Mark PS: some additional info: package github repository: https://github.com/fstpackage/lazyvec AppVeyor package build logs: https://ci.appveyor.com/project/fstpackage/lazyvec Travis package build logs: https://travis-ci.org/fstpackage/lazyvec/builds [[alternative HTML version deleted]]
Tierney, Luke
2019-Jun-04 16:52 UTC
[Rd] [External] undefined symbol errors when compiling package using ALTREP API
On Tue, 4 Jun 2019, Mark Klik wrote:> Hello, > > I'm developing a package (lazyvec) that makes full use of the ALTREP > framework (R >= 3.6.0). > One application of the package is to wrap existing ALTREP vectors in a new > ALTREP vector and pass all calls from R to the contained object. The > purpose of this is to provide a diagnostic framework for working with > ALTREP vectors and show information about internal calls. > > The package builds on Windows and OSX but fails to build on Linux as can be > seen from the link to the Travis build: > https://travis-ci.org/fstpackage/lazyvec/jobs/539442806 > > The reason of build failure is that many ALTREP methods generate 'undefined > symbol' errors upon building the package (on Linux). I've checked the R > source code and the undefined symbols seems to be related to the > 'attribute_hidden' before the function definition. For example, the method > 'ALTVEC_EXTRACT_SUBSET' is defined as: > > SEXP attribute_hidden ALTVEC_EXTRACT_SUBSET(SEXP x, SEXP indx, SEXP call) > > My question is why these differences between Windows / OSX and Linux exist > and if they are intentional?It is intentional that this not be part of the public API. This is true of almost all functions with an ALTREP prefix. You need a different approach that avoids using these directly. Best, luke> Do I need special build parameters to make sure my package builds correctly > on Linux? > > thanks for all the hard work! > > best, > Mark > > PS: some additional info: > > package github repository: https://github.com/fstpackage/lazyvec > AppVeyor package build logs: > https://ci.appveyor.com/project/fstpackage/lazyvec > Travis package build logs: https://travis-ci.org/fstpackage/lazyvec/builds > > [[alternative HTML version deleted]] > > ______________________________________________ > R-devel at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel >-- Luke Tierney Ralph E. Wareham Professor of Mathematical Sciences University of Iowa Phone: 319-335-3386 Department of Statistics and Fax: 319-335-3017 Actuarial Science 241 Schaeffer Hall email: luke-tierney at uiowa.edu Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu
Mark Klik
2019-Jun-04 21:21 UTC
[Rd] [External] undefined symbol errors when compiling package using ALTREP API
thanks for clearing that up, so these methods are actually not meant to be exported on Windows and OSX? Some of the ALTREP methods that now use 'attribute_hidden' would be very useful to packages that aim to be ALTREP aware, should the currently (exported) API be considered final? thanks for your time & best, Mark On Tue, Jun 4, 2019 at 6:52 PM Tierney, Luke <luke-tierney at uiowa.edu> wrote:> On Tue, 4 Jun 2019, Mark Klik wrote: > > > Hello, > > > > I'm developing a package (lazyvec) that makes full use of the ALTREP > > framework (R >= 3.6.0). > > One application of the package is to wrap existing ALTREP vectors in a > new > > ALTREP vector and pass all calls from R to the contained object. The > > purpose of this is to provide a diagnostic framework for working with > > ALTREP vectors and show information about internal calls. > > > > The package builds on Windows and OSX but fails to build on Linux as can > be > > seen from the link to the Travis build: > > https://travis-ci.org/fstpackage/lazyvec/jobs/539442806 > > > > The reason of build failure is that many ALTREP methods generate > 'undefined > > symbol' errors upon building the package (on Linux). I've checked the R > > source code and the undefined symbols seems to be related to the > > 'attribute_hidden' before the function definition. For example, the > method > > 'ALTVEC_EXTRACT_SUBSET' is defined as: > > > > SEXP attribute_hidden ALTVEC_EXTRACT_SUBSET(SEXP x, SEXP indx, SEXP call) > > > > My question is why these differences between Windows / OSX and Linux > exist > > and if they are intentional? > > It is intentional that this not be part of the public API. This is > true of almost all functions with an ALTREP prefix. You need a > different approach that avoids using these directly. > > Best, > > luke > > > Do I need special build parameters to make sure my package builds > correctly > > on Linux? > > > > thanks for all the hard work! > > > > best, > > Mark > > > > PS: some additional info: > > > > package github repository: https://github.com/fstpackage/lazyvec > > AppVeyor package build logs: > > https://ci.appveyor.com/project/fstpackage/lazyvec > > Travis package build logs: > https://travis-ci.org/fstpackage/lazyvec/builds > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-devel at r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-devel > > > > -- > Luke Tierney > Ralph E. Wareham Professor of Mathematical Sciences > University of Iowa Phone: 319-335-3386 > Department of Statistics and Fax: 319-335-3017 > Actuarial Science > 241 Schaeffer Hall email: luke-tierney at uiowa.edu > Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu >[[alternative HTML version deleted]]
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