AC_FC_LIBRARY_LDFLAGS: quoting bug on Solaris with gfortran

[Stefano Lattarini]

This is a minimal example exposing a bug that bit me while I was
running the Automake testsuite on a Solaris system.  The bug seems
to be located in the macro `AC_FC_LIBRARY_LDFLAGS'.

$ cat configure.ac
AC_INIT([foo], [1.0])
AC_PROG_FC
AC_FC_LIBRARY_LDFLAGS
AC_CONFIG_FILES([Makefile])
AC_OUTPUT

$ cat Makefile.in
FCLIBS = @FCLIBS@
default:; @echo $(FCLIBS)

$ uname -a
SunOS freddy 5.10 Generic_141445-09 i86pc i386 i86pc

$ /usr/bin/bash --version
GNU bash, version 3.00.16(1)-release (i386-pc-solaris2.10)
Copyright (C) 2004 Free Software Foundation, Inc.

$ make --version
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-pc-solaris2.10

$ autconf --version
autoconf (GNU Autoconf) 2.65
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+/Autoconf: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by David J. MacKenzie and Akim Demaille.

$ autoconf

$ ./configure FC=gfortran # quotation problems in detection of fortran libs
checking for gfortran... gfortran
checking whether the Fortran compiler works... yes
checking for Fortran compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU Fortran compiler... yes
checking whether gfortran accepts -g... yes
checking how to get verbose linking output from gfortran... -v
checking for Fortran libraries of gfortran...  -R/usr/local/lib' -L/usr/ccs/lib 
-L/usr/lib -L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/../../.. -lgfortranbegin -
lgfortran -lm
configure: creating ./config.status
config.status: creating Makefile

$ cat Makefile # note the unbalanced single quote in definition of FCLIBS
FCLIBS =  -R/usr/local/lib' -L/usr/ccs/lib -L/usr/lib 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/../../.. -lgfortranbegin 
-lgfortran -lm
default:; @echo $(FCLIBS)

$ make SHELL=/usr/bin/bash
/usr/bin/bash: -c: line 0: unexpected EOF while looking for matching `''
/usr/bin/bash: -c: line 1: syntax error: unexpected end of file
make: *** [default] Error 2

$ ./configure FC=sunf90 # this will be ok
./configure FC=sunf90
checking whether the Fortran compiler works... yes
checking for Fortran compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU Fortran compiler... no
checking whether sunf90 accepts -g... yes
checking how to get verbose linking output from sunf90... -v
checking for Fortran libraries of sunf90...  -R/opt/SUNWspro/lib 
-L/opt/SUNWspro/lib -L/opt/SUNWspro/prod/lib -L/usr/ccs/lib -L/lib -L/usr/lib 
-lfui -lfai -lfsu -lsunmath -lmtsk -lm
configure: creating ./config.status
config.status: creating Makefile

$ cat Makefile
FCLIBS =  -R/opt/SUNWspro/lib -L/opt/SUNWspro/lib -L/opt/SUNWspro/prod/lib 
-L/usr/ccs/lib -L/lib -L/usr/lib -lfui -lfai -lfsu -lsunmath -lmtsk -lm
default:; @echo $(FCLIBS)

$ make SHELL=/usr/bin/bash
-R/opt/SUNWspro/lib -L/opt/SUNWspro/lib -L/opt/SUNWspro/prod/lib -L/usr/ccs/lib 
-L/lib -L/usr/lib -lfui -lfai -lfsu -lsunmath -lmtsk -lm

Attached is the config.log of the configure run with FC=gfortran.

Regards,
     Stefano

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

It was created by foo configure 1.0, which was
generated by GNU Autoconf 2.65.  Invocation command line was

  $ ./configure 

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

hostname = freddy
uname -m = i86pc
uname -r = 5.10
uname -s = SunOS
uname -v = Generic_141445-09

/usr/bin/uname -p = i386
/bin/uname -X     = System = SunOS
Node = freddy
Release = 5.10
KernelID = Generic_141445-09
Machine = i86pc
BusType = <unknown>
Serial = <unknown>
Users = <unknown>
OEM# = 0
Origin# = 1
NumCPU = 4

/bin/arch              = i86pc
/usr/bin/arch -k       = i86pc
/usr/convex/getsysinfo = unknown
/usr/bin/hostinfo      = unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH: /home/latta/bin
PATH: /usr/local/bin
PATH: /usr/local64/bin
PATH: /usr/games
PATH: /usr/X11/bin
PATH: /usr/ccs/bin
PATH: /usr/xpg6/bin
PATH: /usr/xpg4/bin
PATH: /usr/bin
PATH: /usr/sbin
PATH: /sbin
PATH: /usr/ucb


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

configure:1748: checking for gfortran
configure:1764: found /usr/local/bin/gfortran
configure:1775: result: gfortran
configure:1801: checking for Fortran compiler version
configure:1810: gfortran --version >&5
GNU Fortran (GCC) 4.4.4
Copyright (C) 2010 Free Software Foundation, Inc.

GNU Fortran comes with NO WARRANTY, to the extent permitted by law.
You may redistribute copies of GNU Fortran
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING

configure:1821: $? = 0
configure:1810: gfortran -v >&5
Using built-in specs.
Target: i386-pc-solaris2.10
Configured with: /home/bfriesen/src/gnu/gcc-4.4.4/configure 
LDFLAGS='-L/usr/local/lib -R/usr/local/lib' --program-suffix=-4.4.4 
--enable-shared --enable-threads --enable-version-specific-runtime-libs 
--with-gnu-as --with-as=/usr/local/lib/binutils-2.20/bin/as --without-gnu-ld 
--with-ld=/usr/ccs/bin/ld --with-gmp=/usr/local --with-mpfr=/usr/local 
--with-cpu=opteron --enable-languages=c,c++,fortran
Thread model: posix
gcc version 4.4.4 (GCC) 
configure:1821: $? = 0
configure:1810: gfortran -V >&5
gfortran: '-V' option must have argument
configure:1821: $? = 1
configure:1810: gfortran -qversion >&5
gfortran: unrecognized option '-qversion'
gfortran: no input files
configure:1821: $? = 1
configure:1836: checking whether the Fortran compiler works
configure:1858: gfortran    conftest.f  >&5
configure:1862: $? = 0
configure:1911: result: yes
configure:1914: checking for Fortran compiler default output file name
configure:1916: result: a.out
configure:1922: checking for suffix of executables
configure:1929: gfortran -o conftest    conftest.f  >&5
configure:1933: $? = 0
configure:1955: result: 
configure:1971: checking whether we are cross compiling
configure:1979: gfortran -o conftest    conftest.f  >&5
configure:1983: $? = 0
configure:1990: ./conftest
configure:1994: $? = 0
configure:2009: result: no
configure:2014: checking for suffix of object files
configure:2030: gfortran -c   conftest.f >&5
configure:2034: $? = 0
configure:2055: result: o
configure:2063: checking whether we are using the GNU Fortran compiler
configure:2076: gfortran -c   conftest.F >&5
configure:2076: $? = 0
configure:2085: result: yes
configure:2091: checking whether gfortran accepts -g
configure:2102: gfortran -c -g  conftest.f >&5
configure:2102: $? = 0
configure:2110: result: yes
configure:2139: checking how to get verbose linking output from gfortran
configure:2149: gfortran -c -g -O2  conftest.f >&5
configure:2149: $? = 0
configure:2167: gfortran -o conftest -g -O2 -v conftest.f
Using built-in specs.
Target: i386-pc-solaris2.10
Configured with: /home/bfriesen/src/gnu/gcc-4.4.4/configure 
LDFLAGS='-L/usr/local/lib -R/usr/local/lib' --program-suffix=-4.4.4 
--enable-shared --enable-threads --enable-version-specific-runtime-libs 
--with-gnu-as --with-as=/usr/local/lib/binutils-2.20/bin/as --without-gnu-ld 
--with-ld=/usr/ccs/bin/ld --with-gmp=/usr/local --with-mpfr=/usr/local 
--with-cpu=opteron --enable-languages=c,c++,fortran
Thread model: posix
gcc version 4.4.4 (GCC) 
 /usr/local/libexec/gcc/i386-pc-solaris2.10/4.4.4/f951 conftest.f -ffixed-form 
-quiet -dumpbase conftest.f -mtune=opteron -auxbase conftest -g -O2 -version 
-fintrinsic-modules-path /usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/finclude 
-o /tmp/ccT7T3Ia.s
GNU Fortran (GCC) version 4.4.4 (i386-pc-solaris2.10)
        compiled by GNU C version 4.4.4, GMP version 4.3.1, MPFR version 2.3.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
 /usr/local/lib/binutils-2.20/bin/as -v --traditional-format -V -Qy -s -o 
/tmp/ccwkjmMe.o /tmp/ccT7T3Ia.s
GNU assembler version 2.20 (i386-pc-solaris2.10) using BFD version (GNU 
Binutils) 2.20
 /usr/local/libexec/gcc/i386-pc-solaris2.10/4.4.4/collect2 -V -Y 
P,/usr/ccs/lib:/usr/lib -Qy -o conftest /usr/lib/crt1.o /usr/lib/crti.o 
/usr/lib/values-Xa.o /usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/crtbegin.o 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/../../.. /tmp/ccwkjmMe.o 
-lgfortranbegin -lgfortran -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/crtend.o /usr/lib/crtn.o
ld: Software Generation Utilities - Solaris Link Editors: 5.10-1.497
configure:2232: result: -v
configure:2234: checking for Fortran libraries of gfortran
configure:2257: gfortran -o conftest -g -O2 -v conftest.f
Using built-in specs.
Target: i386-pc-solaris2.10
Configured with: /home/bfriesen/src/gnu/gcc-4.4.4/configure 
LDFLAGS='-L/usr/local/lib -R/usr/local/lib' --program-suffix=-4.4.4 
--enable-shared --enable-threads --enable-version-specific-runtime-libs 
--with-gnu-as --with-as=/usr/local/lib/binutils-2.20/bin/as --without-gnu-ld 
--with-ld=/usr/ccs/bin/ld --with-gmp=/usr/local --with-mpfr=/usr/local 
--with-cpu=opteron --enable-languages=c,c++,fortran
Thread model: posix
gcc version 4.4.4 (GCC) 
 /usr/local/libexec/gcc/i386-pc-solaris2.10/4.4.4/f951 conftest.f -ffixed-form 
-quiet -dumpbase conftest.f -mtune=opteron -auxbase conftest -g -O2 -version 
-fintrinsic-modules-path /usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/finclude 
-o /tmp/cchy5ZWe.s
GNU Fortran (GCC) version 4.4.4 (i386-pc-solaris2.10)
        compiled by GNU C version 4.4.4, GMP version 4.3.1, MPFR version 2.3.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
 /usr/local/lib/binutils-2.20/bin/as -v --traditional-format -V -Qy -s -o 
/tmp/ccsu9Nen.o /tmp/cchy5ZWe.s
GNU assembler version 2.20 (i386-pc-solaris2.10) using BFD version (GNU 
Binutils) 2.20
 /usr/local/libexec/gcc/i386-pc-solaris2.10/4.4.4/collect2 -V -Y 
P,/usr/ccs/lib:/usr/lib -Qy -o conftest /usr/lib/crt1.o /usr/lib/crti.o 
/usr/lib/values-Xa.o /usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/crtbegin.o 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/../../.. /tmp/ccsu9Nen.o 
-lgfortranbegin -lgfortran -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc 
/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/crtend.o /usr/lib/crtn.o
ld: Software Generation Utilities - Solaris Link Editors: 5.10-1.497
configure:2431: result:  -R/usr/local/lib' -L/usr/ccs/lib -L/usr/lib 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/../../.. -lgfortranbegin 
-lgfortran -lm
configure:2582: creating ./config.status

## ---------------------- ##
## Running config.status. ##
## ---------------------- ##

This file was extended by foo config.status 1.0, which was
generated by GNU Autoconf 2.65.  Invocation command line was

  CONFIG_FILES    = 
  CONFIG_HEADERS  = 
  CONFIG_LINKS    = 
  CONFIG_COMMANDS = 
  $ ./config.status 

on freddy

config.status:722: creating Makefile

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

ac_cv_env_FCFLAGS_set=
ac_cv_env_FCFLAGS_value=
ac_cv_env_FC_set=
ac_cv_env_FC_value=
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_fc_compiler_gnu=yes
ac_cv_fc_libs=' -R/usr/local/lib'\'' -L/usr/ccs/lib -L/usr/lib 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/../../.. -lgfortranbegin 
-lgfortran -lm'
ac_cv_objext=o
ac_cv_prog_ac_ct_FC=gfortran
ac_cv_prog_fc_g=yes
ac_cv_prog_fc_v=-v

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

DEFS='-DPACKAGE_NAME=\"foo\" -DPACKAGE_TARNAME=\"foo\" 
-DPACKAGE_VERSION=\"1.0\" -DPACKAGE_STRING=\"foo\ 1.0\" 
-DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\"'
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EXEEXT=''
FC='gfortran'
FCFLAGS='-g -O2'
FCLIBS=' -R/usr/local/lib'\'' -L/usr/ccs/lib -L/usr/lib 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4 
-L/usr/local/lib/gcc/i386-pc-solaris2.10/4.4.4/../../.. -lgfortranbegin 
-lgfortran -lm'
LDFLAGS=''
LIBOBJS=''
LIBS=''
LTLIBOBJS=''
OBJEXT='o'
PACKAGE_BUGREPORT=''
PACKAGE_NAME='foo'
PACKAGE_STRING='foo 1.0'
PACKAGE_TARNAME='foo'
PACKAGE_URL=''
PACKAGE_VERSION='1.0'
PATH_SEPARATOR=':'
SHELL='/bin/bash'
ac_ct_FC='gfortran'
bindir='${exec_prefix}/bin'
build_alias=''
datadir='${datarootdir}'
datarootdir='${prefix}/share'
docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
dvidir='${docdir}'
exec_prefix='${prefix}'
host_alias=''
htmldir='${docdir}'
includedir='${prefix}/include'
infodir='${datarootdir}/info'
libdir='${exec_prefix}/lib'
libexecdir='${exec_prefix}/libexec'
localedir='${datarootdir}/locale'
localstatedir='${prefix}/var'
mandir='${datarootdir}/man'
oldincludedir='/usr/include'
pdfdir='${docdir}'
prefix='/usr/local'
program_transform_name='s,x,x,'
psdir='${docdir}'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
sysconfdir='${prefix}/etc'
target_alias=''

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

/* confdefs.h */
#define PACKAGE_NAME "foo"
#define PACKAGE_TARNAME "foo"
#define PACKAGE_VERSION "1.0"
#define PACKAGE_STRING "foo 1.0"
#define PACKAGE_BUGREPORT ""
#define PACKAGE_URL ""

configure: exit 0