[bot-automerge] r-igraph v1.4.0

[regro-cf-autotick-bot]

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[conda-forge-webservices[bot]]

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I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[github-actions[bot]]

Hi! This is the friendly conda-forge automerge bot!

I considered the following status checks when analyzing this PR:

• linter: passed
• azure: failed

Thus the PR was not passing and not merged.

[mfansler]

Fails on win-64 with undefined isnan. Here's the excerpt:

g++ -std=gnu++11  -I"D:/bld/r-igraph_1676042533067/_h_env/lib/R/include" -DNDEBUG -DUSING_R -I. -Icore -Iinclude -Ivendor -I/mingw64/include/libxml2 -DNDEBUG -DNTIMER -DNPRINT -DINTERNAL_ARPACK -DPRPACK_IGRAPH_SUPPORT -DIGRAPH_THREAD_LOCAL=/**/         -O2 -Wall  -march=x86-64 -mtune=generic  -c core/community/infomap/infomap.cc -o core/community/infomap/infomap.o
In file included from core/core/interruption.h:29:0,
                 from core/community/infomap/infomap.cc:35:
./config.h:116:0: warning: "IGRAPH_THREAD_LOCAL" redefined
 #define IGRAPH_THREAD_LOCAL /**/
 ^
<command-line>:0:0: note: this is the location of the previous definition
core/community/infomap/infomap.cc: In function 'int igraph_community_infomap(const igraph_t*, const igraph_vector_t*, const igraph_vector_t*, int, igraph_vector_t*, igraph_real_t*)':
core/community/infomap/infomap.cc:289:39: error: 'isnan' was not declared in this scope
             } else if (isnan(minweight)) {
                                       ^
core/community/infomap/infomap.cc:289:39: note: suggested alternative:
In file included from core/community/infomap/infomap.cc:32:0:
D:/bld/r-igraph_1676042533067/_h_env/Library/mingw-w64/include/c++/5.3.0/cmath:641:5: note:   'std::isnan'
     isnan(_Tp __x)
     ^
core/community/infomap/infomap.cc:304:39: error: 'isnan' was not declared in this scope
             } else if (isnan(minweight)) {
                                       ^
core/community/infomap/infomap.cc:304:39: note: suggested alternative:
In file included from core/community/infomap/infomap.cc:32:0:
D:/bld/r-igraph_1676042533067/_h_env/Library/mingw-w64/include/c++/5.3.0/cmath:641:5: note:   'std::isnan'
     isnan(_Tp __x)
     ^
make: *** [core/community/infomap/infomap.o] Error 1
D:/bld/r-igraph_1676042533067/_h_env/lib/R/etc/x64/Makeconf:243: recipe for target 'core/community/infomap/infomap.o' failed
ERROR: compilation failed for package 'igraph'

[szhorvat]

This might fix it:

https://github.com/igraph/igraph/commit/7b4219729d6fd16f0a480ae6413738427f58bee3

Can you apply the patch on the conda side and test it? I cannot reproduce the issue locally with GCC 11/12 on macOS. It may have to do with the fact that <cmath> was included before <math.h>, and somehow prevented the full processing of math.h due to a shared header guard? This is a pure guess. If this is what's happening, it might actually be a bug in the toolchain, as math.h and cmath are different ...

CC @ntamas

[szhorvat]

I believe this is a bug in GCC 5 and earlier (or the standard library that comes with it). You can try it here.

https://godbolt.org/z/5r1h9sboE

This does not compile without using std::isnan, unless #include <cmath> is removed.

#include <cmath>
#include <math.h>

int main() { isnan(1.0); return 0; }

Why are you using such an ancient compiler version? GCC 6 is already free of this problem.

[mfansler]

@szhorvat thanks for sharing your insight! Unfortunately, no one regularly updates the Conda Forge m2w64 toolchain. So, it looks like dropping the Windows build until that progresses might be something to consider.

[github-actions[bot]]

Hi! This is the friendly conda-forge automerge bot!

It appears that not all commits to this PR were made by the bot. Thus this PR is not being automatically merged. Please add the automerge label again (or ask a maintainer to do so) if you'd like to enable automerge again!

[mfansler]

@conda-forge-admin please rerender

[szhorvat]

1.4.1, released today, fixes this issue.