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build: Build and check (ice-9 popen) only when --enable-posix and HAVE_FORK.

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Fixes <http://bugs.gnu.org/13848>.
Reported by Jan Schukat <shookie@email.de>.

* configure.ac: Rename `HAVE_FORK' conditional to `BUILD_ICE_9_POPEN'.
  Set it when both $enable_posix and $ac_cv_func_fork are true.
* libguile/posix.c (scm_init_posix): Add the `fork' feature.
* doc/ref/api-options.texi (Common Feature Symbols): Add `fork'.
* doc/ref/posix.texi (Pipes): Add footnote mentioning the `fork'
  feature.
* module/Makefile.am (SCRIPTS_SOURCES): Make `scripts/autofrisk.scm' and
  `scripts/scan-api.scm' conditional on `BUILD_ICE_9_POPEN'.
* test-suite/tests/popen.test (if-supported): New macro.
  Wrap body in `if-supported'.
This commit is contained in:
Ludovic Courtès 2013-03-29 19:04:56 +01:00
commit df3d365a99
6 changed files with 188 additions and 176 deletions
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8
doc/ref/api-options.texi
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@ -1,6 +1,7 @@
@c -*-texinfo-*-
@c This is part of the GNU Guile Reference Manual.
@c Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009, 2010, 2011, 2012
@c Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
@c 2008, 2009, 2010, 2011, 2012, 2013
@c Free Software Foundation, Inc.
@c See the file guile.texi for copying conditions.
@ -281,6 +282,11 @@ Databases}).
Indicates support for POSIX functions: @code{pipe}, @code{getgroups},
@code{kill}, @code{execl} and so on (@pxref{POSIX}).
@item fork
Indicates support for the POSIX @code{fork} function (@pxref{Processes,
@code{primitive-fork}}). This is a prerequisite for the @code{(ice-9
popen)} module (@pxref{Pipes}).
@item random
Indicates availability of random number generation functions:
@code{random}, @code{copy-random-state}, @code{random-uniform} and so on