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Diffstat (limited to 'mcon/U/usenm.U')
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diff --git a/mcon/U/usenm.U b/mcon/U/usenm.U new file mode 100644 index 0000000..a5c8766 --- /dev/null +++ b/mcon/U/usenm.U @@ -0,0 +1,121 @@ +?RCS: $Id: usenm.U,v 3.0.1.1 1997/02/28 16:26:40 ram Exp $ +?RCS: +?RCS: Copyright (c) 1991-1993, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic Licence, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic Licence; a copy of which may be found at the root +?RCS: of the source tree for dist 3.0. +?RCS: +?RCS: $Log: usenm.U,v $ +?RCS: Revision 3.0.1.1 1997/02/28 16:26:40 ram +?RCS: patch61: don't use nm with the GNU C library +?RCS: patch61: added support for Linux shared libs +?RCS: +?RCS: Revision 3.0 1993/08/18 12:09:57 ram +?RCS: Baseline for dist 3.0 netwide release. +?RCS: +?MAKE:usenm runnm nm_opt nm_so_opt: cat test Myread Oldconfig myuname grep \ + d_gnulibc +?MAKE: -pick add $@ %< +?S:usenm: +?S: This variable contains 'true' or 'false' depending whether the +?S: nm extraction is wanted or not. +?S:. +?S:runnm: +?S: This variable contains 'true' or 'false' depending whether the +?S: nm extraction should be performed or not, according to the value +?S: of usenm and the flags on the Configure command line. +?S:. +?S:nm_opt: +?S: This variable holds the options that may be necessary for nm. +?S:. +?S:nm_so_opt: +?S: This variable holds the options that may be necessary for nm +?S: to work on a shared library but that can not be used on an +?S: archive library. Currently, this is only used by Linux, where +?S: nm --dynamic is *required* to get symbols from an ELF library which +?S: has been stripped, but nm --dynamic is *fatal* on an archive library. +?S: Maybe Linux should just always set usenm=false. +?S:. +: see if nm is to be used to determine whether a symbol is defined or not +?X: If there is enough enquiries, it might be worth to wait for the nm +?X: extraction. Otherwise, the C compilations might be a better deal. +?X: +?X: Don't bother if we're using GNU libc -- skimo +case "$usenm" in +'') + case "$d_gnulibc" in + $define) + dflt=n + ;; + *) + dflt=`egrep 'inlibc|csym' ../Configure | wc -l 2>/dev/null` + if $test $dflt -gt 20; then + dflt=y + else + dflt=n + fi + ;; + esac + ;; +*) + case "$usenm" in + true) dflt=y;; + *) dflt=n;; + esac + ;; +esac +$cat <<EOM + +I can use 'nm' to extract the symbols from your C libraries. This is a time +consuming task which may generate huge output on the disk (up to 3 megabytes) +but that should make the symbols extraction faster. The alternative is to skip +the 'nm' extraction part and to compile a small test program instead to +determine whether each symbol is present. If you have a fast C compiler and/or +if your 'nm' output cannot be parsed, this may be the best solution. +You shouldn't let me use 'nm' if you have the GNU C Library. + +EOM +rp='Shall I use nm to extract C symbols from the libraries?' +. ./myread +case "$ans" in +n|N) usenm=false;; +*) usenm=true;; +esac + +?X: Name extraction is to be run if 'nm' usage is wanted and if no -r flag +?X: was provided to configure (in which case we simply re-use the previous +?X: values). +runnm=$usenm +case "$reuseval" in +true) runnm=false;; +esac + +: nm options which may be necessary +case "$nm_opt" in +'') if $test -f /mach_boot; then + nm_opt='' + elif $test -d /usr/ccs/lib; then + nm_opt='-p' + elif $test -f /dgux; then + nm_opt='-p' + else + nm_opt='' + fi;; +esac + +: nm options which may be necessary for shared libraries but illegal +: for archive libraries. Thank you, Linux. +case "$nm_so_opt" in +'') case "$myuname" in + *linux*) + if nm --help | $grep 'dynamic' > /dev/null 2>&1; then + nm_so_opt='--dynamic' + fi + ;; + esac + ;; +esac + |