I'm trying to do a check to see whether a the GNU Scientific library is present. I hope to do this by checking for two libraries and two headers and if all 4 exist, I can assume the installation is not too broken.
A problem occurs on one system (Sun SPARCstation 20 running Debian Linux 3.2, gcc 2.95.4, /bin/sh linked to bash). The configure script runs okay on another computer which has the gsl libraries installed (Sun Ultra 80 running Solaris 8, with /bin/sh being Sun's sh. The script also runs okay on a couple of machines that don't have the libraries installed. On the troublesome computer, the configure script seems to find the gsl libraries and headers: checking for main in -lm... yes checking for memalign in -lc... yes checking for cblas_scasum in -lgslcblas... yes checking for main in -lgsl... yes <snip> checking gsl/gsl_sf_ellint.h usability... yes checking gsl/gsl_sf_ellint.h presence... yes checking for gsl/gsl_sf_ellint.h... yes checking gsl/gsl_sf_bessel.h usability... yes checking gsl/gsl_sf_bessel.h presence... yes checking for gsl/gsl_sf_bessel.h... yes checking whether byte ordering is bigendian... yes checking for int... yes checking size of int... configure: error: cannot compute sizeof (int), 77 make: *** No targets specified and no makefile found. Stop. select: Bad file number but a check of the size of an integer fails, soon after the libraries were found. Prior to checking for the libraries the only flags passed to gcc when compiling conftest.c are -g and -O2. However, after these libraries have been tested for (and found) the extra options -lgsl -lgslcblas get added, as one would expect. The relavant part of config.log is below. Note that when compling on lines 4327, 4363 and 4526, the only flags to gcc are -g and -O2. However, after I had inserted the checks for the librararies, it adds the flags -lgsl -lgslcblas -lm. configure:4297: checking whether byte ordering is bigendian configure:4327: gcc -c -g -O2 conftest.c >&5 configure:4330: $? = 0 configure:4333: test -s conftest.o configure:4336: $? = 0 configure:4363: gcc -c -g -O2 conftest.c >&5 configure:4366: $? = 0 configure:4369: test -s conftest.o configure:4372: $? = 0 configure:4480: result: yes configure:4499: checking for int configure:4526: gcc -c -g -O2 conftest.c >&5 configure:4529: $? = 0 configure:4532: test -s conftest.o configure:4535: $? = 0 configure:4545: result: yes configure:4548: checking size of int configure:4826: gcc -o conftest -g -O2 conftest.c -lgsl -lgslcblas -lm >&5 configure:4829: $? = 0 configure:4831: ./conftest ./conftest: error while loading shared libraries: libgsl.so.0: cannot open shared object file: No such file or directory configure:4834: $? = 127 configure: program exited with status 127 configure: failed program was: #line 4784 "configure" It seems to suggested the library libgsl.so.0 is missing. However, has it not already checked and found that it? The library is in fact in /usr/local/lib, although it links to another file, which links to another before the library $ ls -l /usr/local/lib/libgsl.so.0 lrwxrwxrwx 1 root staff 31 Feb 10 00:03 /usr/local/lib/libgsl.so.0 -> ../stow/gsl-1.2/lib/libgsl.so.0 $ ls -l /usr/local/stow/gsl-1.2/lib/libgsl.so.0 lrwxrwxrwx 1 root staff 15 Feb 9 20:20 /usr/local/stow/gsl-1.2/lib/libgsl.so.0 -> libgsl.so.0.3.0 $ ls -l /usr/local/stow/gsl-1.2/lib/libgsl.so.0.3.0 -rwxr-xr-x 1 root staff 5452813 Feb 9 20:20 /usr/local/stow/gsl-1.2/lib/libgsl.so.0.3.0 This is my configure.in (the relavant parts only). Any suggestions welcome. I've tried playing with the order of checking the two libraries, adding the 4th option to link another library when checking with AC_CHECK_LIB ... I seem to be getting nowhere fast. I tried adding the LDFLAGS optoin on the command line to configure to make it look in /usr/local/lib, but that failed, but I would have thought it looked there anyway. AC_INIT(atlc, 5.0.0, [EMAIL PROTECTED]) AM_INIT_AUTOMAKE(atlc, 5.0.0, [EMAIL PROTECTED]) dnl Checks for programs. AC_PROG_CC AC_PROG_CXX AC_PROG_CXXCPP AC_PROG_RANLIB AC_ISC_POSIX dnl AC_OUTPUT_COMMANDS([exit]) dnl Checks for libraries. AC_CHECK_LIB(m,main) AC_CHECK_LIB(c,memalign, AC_DEFINE(HAVE_MEMALIGN)) gsl_libgsl=1 gsl_libcblas=1 AC_CHECK_LIB(gslcblas,cblas_scasum,,gsl_libcblas=0) AC_CHECK_LIB(gsl,main,,gsl_libgsl=0) dnl Checks for header files. dnl AC_STDC_HEADERS AC_HAVE_HEADERS(stdio.h math.h errno.h stdlib.h string.h thread.h pthread.h pthreads.h mpi.h) gsl_ellint=1 gsl_bessel=1 AC_HAVE_HEADERS(gsl/gsl_sf_ellint.h,,gsl_ellint=0) AC_HAVE_HEADERS(gsl/gsl_sf_bessel.h,,gsl_bessel=0) dnl checks for compiler characteristics AC_C_BIGENDIAN AC_CHECK_SIZEOF(int) AC_CHECK_SIZEOF(long) AC_CHECK_SIZEOF(size_t) dnl Check for a functioning gsl installation. if test $gsl_ellint = 1 && test $gsl_bessel = 1 && test $gsl_libcblas = 1 && test $gsl_libgsl = 1; then AC_DEFINE(HAVE_GSL) elif test $gsl_ellint = 0 || test $gsl_bessel = 0 || test $gsl_libcblas = 0 || test $gsl_libgsl = 0; then AC_MSG_WARN([To get full functionality you should install the GNU scientific library (gsl) available at http://sources.redhat.com/gsl. Without gsl it will be impossible to evaluate the theoretical impedance of a coupler using \"design_coupler\" or of a stripline using \"usage_create_bmp_for_symmetrical_stripline\". Some self tests will fail too. However, much of the atlc package will work without gsl.]) else dnl some libraries/headers exist, but not all of them. AC_MSG_WARN([Some of the gsl headers and libraries were found, but others were not. Since the installation appears to be broken, the use of gsl will be disabled. Without gsl, it will be impossible to evaluate the theoretical impedance of a coupler using \"design_coupler\" or of a stripline using \"usage_create_bmp_for_symmetrical_stripline\". Some self tests will fail too. However, much of the atlc package will work without gsl.]) fi AC_OUTPUT([\ Makefile \ src/Makefile \ src/non_gui/Makefile \ src/gui/Makefile \ man/Makefile \ man/man1/Makefile \ examples/Makefile \ tools/Makefile \ tools/src/Makefile \ tests/Makefile \ docs/html-docs/Makefile \ docs/html-docs/jpgs/Makefile \ docs/qex-december-1996/Makefile \ docs/theory/Makefile \ docs/Makefile ]) -- Dr. David Kirkby, Senior Research Fellow, Department of Medical Physics, University College London, 11-20 Capper St, London, WC1E 6JA. Tel: 020 7679 6408 Fax: 020 7679 6269 Internal telephone: ext 46408 e-mail [EMAIL PROTECTED]
