Re: Specifying which shell to use

[Dan Smithers]

-------- Original Message --------
Subject: Re: Specifying which shell to use
Date: Mon, 12 Oct 2009 14:31:25 +0100
From: Dan Smithers <address@hidden>
To: Ralf Wildenhues <address@hidden>
References: <address@hidden>
<address@hidden>

Hi all,

My supposition comes from these facts

When I use CC=gcc and CXX=g++ the configure works and produces a working
Makefile.

If I set CC=icc and CXX=icpc then the configure fails as shown below.

The first line of the configure is
#! /bin/sh

On my Ubuntu system /bin/sh is a link to /bin/dash

If I change the first line to
#! /bin/bash
then the build works using either gcc or icc.

If I run configure on a Redhat 7.3 machine then it works correctly (but
/bin/sh is a link to /bin/bash).

The problem comes before I get to my code in the autotools bit.

This may not be the ideal recipe for portable code, but I would like to
be able to get this working in both environments.

thanks for your input

dan
> 
> Can you please be more specific here?  Show a small configure.ac script
> that fails, and how it fails, copy and pasting the commands and error
> messages?  Things should work just fine with icpc.
> 

I have written a four line "hello world" to demonstrate this.
-------- command line and error output --------

/homesint/dwhs1/test/amake/hello_world/configure -C --prefix
/opt/astraguard/2.6.20-16-generic/icc8/debug CC=icc CXX=icpc
'CPPFLAGS=-D_GNU_SOURCE -DDEBUG' 'CFLAGS=-w1 -wd 963 -wd 964 -wd 1338
-xK -openmp -D__Linux__ -g -O0' 'CXXFLAGS=-w1 -wd 963 -wd 964 -wd 1338
-wd 444 -xK -openmp -D__Linux__ -g -O0 -openmp'
configure: loading cache config.cache
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking for style of include used by make... GNU
checking for gcc... icc
checking for C compiler default output file name... a.out
checking whether the C compiler works... configure: error: cannot run C
compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details.

-------- configure.ac ----------

# preamble
AC_INIT([hello_world], [1522])
AC_PREREQ([2.61])

# specify alternative directory
AC_CONFIG_AUX_DIR([config])

# set up auto make - require version 1.10
AM_INIT_AUTOMAKE([-Wall -Werror foreign 1.10])
# specify config header name.
AM_CONFIG_HEADER([config.h])

# set default path prefix
AC_PREFIX_DEFAULT([/opt/test/])

AC_FUNC_VPRINTF

AC_OUTPUT(Makefile)

-------- Makefile.am -----------

AM_CPPFLAGS=
AM_CFLAGS=-Wall -Werror
AM_CXXFLAGS=$(AM_CFLAGS)

bin_PROGRAMS=hello_world
hello_world_SOURCES= hello_world.cpp
hello_world_LDADD=
EXTRA_DIST=

MAINTAINERCLEANFILES=Makefile.in

-------- config.log ------------

This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by hello_world configure 1522, which was
generated by GNU Autoconf 2.61.  Invocation command line was

  $ /homesint/dwhs1/test/amake/hello_world/configure -C --prefix
/opt/astraguard/2.6.20-16-generic/icc8/debug CC=icc CXX=icpc
CPPFLAGS=-D_GNU_SOURCE -DDEBUG CFLAGS=-w1 -wd 963 -wd 964 -wd 1338 -xK
-openmp -D__Linux__ -g -O0 CXXFLAGS=-w1 -wd 963 -wd 964 -wd 1338 -wd 444
-xK -openmp -D__Linux__ -g -O0 -openmp

## --------- ##
## Platform. ##
## --------- ##

hostname = ganymede
uname -m = i686
uname -r = 2.6.20-16-generic
uname -s = Linux
uname -v = #2 SMP Thu Jun 7 20:19:32 UTC 2007

/usr/bin/uname -p = unknown
/bin/uname -X     = unknown

/bin/arch              = i686
/usr/bin/arch -k       = unknown
/usr/convex/getsysinfo = unknown
/usr/bin/hostinfo      = unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH: /vol/build/intel/compiler80/bin
PATH: /homesint/dwhs1/bin
PATH: /usr/local/sbin
PATH: /usr/local/bin
PATH: /usr/sbin
PATH: /usr/bin
PATH: /sbin
PATH: /bin
PATH: /usr/games


## ----------- ##
## Core tests. ##
## ----------- ##

configure:1590: loading cache config.cache
configure:1734: checking for a BSD-compatible install
configure:1790: result: /usr/bin/install -c
configure:1801: checking whether build environment is sane
configure:1844: result: yes
configure:1872: checking for a thread-safe mkdir -p
configure:1911: result: /bin/mkdir -p
configure:1924: checking for gawk
configure:1954: result: no
configure:1924: checking for mawk
configure:1940: found /usr/bin/mawk
configure:1951: result: mawk
configure:1962: checking whether make sets $(MAKE)
configure:1983: result: yes
configure:2190: checking for style of include used by make
configure:2218: result: GNU
configure:2288: checking for gcc
configure:2315: result: icc
configure:2553: checking for C compiler version
configure:2560: icc --version >&5
8.0
configure:2563: $? = 0
configure:2570: icc -v >&5
Version 8.0
configure:2573: $? = 0
configure:2580: icc -V >&5
Intel(R) C++ Compiler for 32-bit applications, Version 8.0   Build
20031016Z Package ID: l_cc_p_8.0.055
Copyright (C) 1985-2003 Intel Corporation.  All rights reserved.
FOR NON-COMMERCIAL USE ONLY

icc: Command line error: no files specified; for help type "icc -help"
configure:2583: $? = 1
configure:2606: checking for C compiler default output file name
configure:2633: icc -w1 -wd 963 -wd 964 -wd 1338 -xK -openmp -D__Linux__
-g -O0 -D_GNU_SOURCE -DDEBUG  conftest.c  >&5
configure:2636: $? = 0
configure:2674: result: a.out
configure:2691: checking whether the C compiler works
configure:2701: ./a.out
/homesint/dwhs1/test/amake/hello_world/configure: line 2702: 15162
Segmentation fault      (core dumped) ./$ac_file
configure:2704: $? = 139
configure:2713: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details.

## ---------------- ##
## Cache variables. ##
## ---------------- ##

ac_cv_env_CC_set=set
ac_cv_env_CC_value=icc
ac_cv_env_CFLAGS_set=set
ac_cv_env_CFLAGS_value='-w1 -wd 963 -wd 964 -wd 1338 -xK -openmp
-D__Linux__ -g -O0'
ac_cv_env_CPPFLAGS_set=set
ac_cv_env_CPPFLAGS_value='-D_GNU_SOURCE -DDEBUG'
ac_cv_env_LDFLAGS_set=
ac_cv_env_LDFLAGS_value=
ac_cv_env_LIBS_set=
ac_cv_env_LIBS_value=
ac_cv_env_build_alias_set=
ac_cv_env_build_alias_value=
ac_cv_env_host_alias_set=
ac_cv_env_host_alias_value=
ac_cv_env_target_alias_set=
ac_cv_env_target_alias_value=
ac_cv_path_install='/usr/bin/install -c'
ac_cv_path_mkdir=/bin/mkdir
ac_cv_prog_AWK=mawk
ac_cv_prog_ac_ct_CC=icc
ac_cv_prog_make_make_set=yes

## ----------------- ##
## Output variables. ##
## ----------------- ##

ACLOCAL='${SHELL} /homesint/dwhs1/test/amake/hello_world/config/missing
--run aclocal-1.10'
AMDEPBACKSLASH='\'
AMDEP_FALSE='#'
AMDEP_TRUE=''
AMTAR='${SHELL} /homesint/dwhs1/test/amake/hello_world/config/missing
--run tar'
AUTOCONF='${SHELL} /homesint/dwhs1/test/amake/hello_world/config/missing
--run autoconf'
AUTOHEADER='${SHELL}
/homesint/dwhs1/test/amake/hello_world/config/missing --run autoheader'
AUTOMAKE='${SHELL} /homesint/dwhs1/test/amake/hello_world/config/missing
--run automake-1.10'
AWK='mawk'
CC='icc'
CCDEPMODE=''
CFLAGS='-w1 -wd 963 -wd 964 -wd 1338 -xK -openmp -D__Linux__ -g -O0'
CPPFLAGS='-D_GNU_SOURCE -DDEBUG'
CYGPATH_W='echo'
DEFS=''
DEPDIR='.deps'
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EXEEXT=''
INSTALL_DATA='${INSTALL} -m 644'
INSTALL_PROGRAM='${INSTALL}'
INSTALL_SCRIPT='${INSTALL}'
INSTALL_STRIP_PROGRAM='$(install_sh) -c -s'
LDFLAGS=''
LIBOBJS=''
LIBS=''
LTLIBOBJS=''
MAKEINFO='${SHELL} /homesint/dwhs1/test/amake/hello_world/config/missing
--run makeinfo'
OBJEXT=''
PACKAGE='hello_world'
PACKAGE_BUGREPORT=''
PACKAGE_NAME='hello_world'
PACKAGE_STRING='hello_world 1522'
PACKAGE_TARNAME='hello_world'
PACKAGE_VERSION='1522'
PATH_SEPARATOR=':'
SET_MAKE=''
SHELL='/bin/bash'
STRIP=''
VERSION='1522'
ac_ct_CC='icc'
am__fastdepCC_FALSE=''
am__fastdepCC_TRUE=''
am__include='include'
am__isrc=' -I$(srcdir)'
am__leading_dot='.'
am__quote=''
am__tar='${AMTAR} chof - "$$tardir"'
am__untar='${AMTAR} xf -'
bindir='${exec_prefix}/bin'
build_alias=''
datadir='${datarootdir}'
datarootdir='${prefix}/share'
docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
dvidir='${docdir}'
exec_prefix='NONE'
host_alias=''
htmldir='${docdir}'
includedir='${prefix}/include'
infodir='${datarootdir}/info'
install_sh='$(SHELL)
/homesint/dwhs1/test/amake/hello_world/config/install-sh'
libdir='${exec_prefix}/lib'
libexecdir='${exec_prefix}/libexec'
localedir='${datarootdir}/locale'
localstatedir='${prefix}/var'
mandir='${datarootdir}/man'
mkdir_p='/bin/mkdir -p'
oldincludedir='/usr/include'
pdfdir='${docdir}'
prefix='/opt/astraguard/2.6.20-16-generic/icc8/debug'
program_transform_name='s,x,x,'
psdir='${docdir}'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
sysconfdir='${prefix}/etc'
target_alias=''

## ----------- ##
## confdefs.h. ##
## ----------- ##

#define PACKAGE_NAME "hello_world"
#define PACKAGE_TARNAME "hello_world"
#define PACKAGE_VERSION "1522"
#define PACKAGE_STRING "hello_world 1522"
#define PACKAGE_BUGREPORT ""
#define PACKAGE "hello_world"
#define VERSION "1522"

configure: exit 1



> Or is it that some of the code that you wrote yourself, not coming from
> Autoconf, doesn't cope with dash?  In that case, the first
> recommendation is the one you heard from the others: write portable
> code.  If absolutely impossible, there also exists a (currently internal
> only) API to specify tests that the shell in use must pass in order to
> be eligible.  We could make a public API  to _AS_DETECT_REQUIRED, if
> it's deemed safe enough to use.
> 
> Thanks,
> Ralf
> 
> 
> _______________________________________________
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>