Recently, after doing ./configure, then invoking make, the configure script is run yet another time. @tamas do you have any idea why this started to happen?
Here’s a snippet from the output of my script that basically does ./configure then make with some extra ./configure options (which you can ignore). Notice that as the first configure finishes, a second will start right away.
igraph successfully configured.
GraphML format support -- no
GMP library support -- yes
GLPK library support -- yes
Thread-local storage -- no
Use internal ARPACK -- yes
Use internal LAPACK -- yes
Use internal BLAS -- yes
Use internal F2C -- yes
Use internal GLPK -- no
Debug build -- no
Clang AddressSanitizer -- no
Profiling -- no
Link time optimization -- no
CDPATH="${ZSH_VERSION+.}:" && cd . && /bin/sh /Users/szhorvat/Repos/igraph-c/igraph/missing aclocal-1.16 -I m4
cd . && /bin/sh /Users/szhorvat/Repos/igraph-c/igraph/missing automake-1.16 --foreign
CDPATH="${ZSH_VERSION+.}:" && cd . && /bin/sh /Users/szhorvat/Repos/igraph-c/igraph/missing autoconf
/bin/sh ./config.status --recheck
running CONFIG_SHELL=/bin/sh /bin/sh ./configure --prefix=/Users/szhorvat/local --disable-graphml --with-external-glpk --with-pic CFLAGS=-mmacosx-version-min=10.9 -O3 -flto=thin LDFLAGS=-L/Users/szhorvat/local/lib -flto=thin CPPFLAGS=-I/Users/szhorvat/local/include CXXFLAGS=-O3 -flto=thin -mmacosx-version-min=10.9 -std=c++11 --no-create --no-recursion
checking for a BSD-compatible install... /opt/local/bin/ginstall -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /opt/local/bin/gmkdir -p
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
Same for me; nice catch! I have no idea what causes this. For some reason, make seems to re-run aclocal-1.16, then automake-1.16, then autoconf. These invocations probably change the timestamps in some of the files that trigger make to re-run ./configure “just to be on the safe side”.
GNU Make 3.81
Copyright (C) 2006 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.
This program built for i386-apple-darwin11.3.0
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CDPATH="${ZSH_VERSION+.}:" && cd .. && /bin/sh /Users/tamas/dev/igraph/igraph/missing aclocal-1.16 -I m4
Putting child 0x7fdd00e013d0 (../aclocal.m4) PID 29606 on the chain.
Live child 0x7fdd00e013d0 (../aclocal.m4) PID 29606
Reaping winning child 0x7fdd00e013d0 PID 29606
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Must remake target `../Makefile.in'.
It must have happened fairly recently. Could it have anything to do with when you added LTO support to th build system?
The released 0.8.0 C core sources (zip file on GitHub) builds fine without autotools / libtool (I tested this for MacPorts). It must have happened after release.
I don’t think so. One thing is for sure: after running ./bootstrap.sh, the files in the m4/ folder become newer than aclocal.m4 in the root folder of the source tree, and that’s why make thinks that aclocal.m4 has to be regenerated. Touching all files in m4/ at the end of the bootstrap process makes the problem disappear, although I think this is treating just the symptoms and not the underlying cause.
Okay, I have changed the ordering of various GNU autotools-related commands in ./bootstrap.sh according to this answer on SO and it seemed to do the trick. A bit of cargo cult programming wouldn’t hurt, would it?
