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490d8a6e4f
C binding even if $CC is a C++ compiler. Skip the test with g++ as its command line driver reorders `-lm'. * tests/search-path.at: Declare `inflate' with C binding. * tests/stresstest.at: Avoid unused variable warnings.
106 lines
3.3 KiB
Plaintext
106 lines
3.3 KiB
Plaintext
# Hand crafted tests for GNU Libtool. -*- Autotest -*-
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# Copyright 2006 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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# link-order2.test: make sure that depdepls are added right after
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# the libs that pull them in: necessary at least for static linking
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# and on systems where libraries do not link against other libraries,
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# in order to do this: override a commonly used symbol in a commonly
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# used library.
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AT_SETUP([Link order of deplibs.])
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AT_KEYWORDS([libtool])
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# g++ reorders `-lm' on the command line. :-(
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AT_DATA([t.c], [[
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#if defined(__cplusplus) && defined(__GNUC__)
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choke me
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#endif
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int t = 42;
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]])
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AT_CHECK([$CC $CPPFLAGS $CFLAGS -c t.c || exit 77], [], [ignore], [ignore])
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LDFLAGS="$LDFLAGS -no-undefined"
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libdir=`pwd`/inst/lib
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bindir=`pwd`/inst/bin
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mkdir inst inst/bin inst/lib
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cat >a.c <<\EOF
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/* pretend we have a better sine function */
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#ifdef __cplusplus
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extern "C"
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#endif
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double sin (double x) { return 0.0; }
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EOF
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cat >b.c <<\EOF
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#ifdef __cplusplus
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extern "C"
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#endif
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double sin (double);
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double b (double x) { return sin (x); }
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EOF
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cat >main.c <<\EOF
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#include <math.h>
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#include <stdlib.h>
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extern double b (double);
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extern double four;
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double four = 4.0;
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int main (void)
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{
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/* The function b should call our sin (that returns 0) and not libm's
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* (in the latter case, b returns approximately 1)
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* the sqrt is to force linking against libm
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* the variable four is to prevent most compiler optimizations
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*/
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int status = EXIT_FAILURE;
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if (fabs (b (3.1415 / 2.)) < 0.01 && fabs (sqrt (four) - 2.) < 0.01)
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status = EXIT_SUCCESS;
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return status;
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}
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EOF
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$LIBTOOL --mode=compile $CC $CPPFLAGS $CFLAGS -c a.c
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$LIBTOOL --mode=compile $CC $CPPFLAGS $CFLAGS -c b.c
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$CC $CPPFLAGS $CFLAGS -c main.c
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for static in '' -static; do
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$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS $static -o liba.la a.lo -rpath $libdir
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$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS $static -o libb.la b.lo liba.la -rpath $libdir
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$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o main main.$OBJEXT libb.la -lm
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LT_AT_EXEC_CHECK([./main])
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# Now test that if we reverse the link order, the program fails.
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# The execution failure can only work on systems that actually have a libm.
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$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o wrong main.$OBJEXT -lm libb.la
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case $host_os in
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cygwin* | mingw* | pw32* | beos* ) ;;
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*) LT_AT_EXEC_CHECK([./wrong], [1]) ;;
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esac
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$LIBTOOL --mode=install cp liba.la $libdir/liba.la
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$LIBTOOL --mode=install cp libb.la $libdir/libb.la
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$LIBTOOL --mode=install cp main $bindir/main
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$LIBTOOL --mode=clean rm -f liba.la libb.la
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LT_AT_EXEC_CHECK([$bindir/main])
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done
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# Now the converse: if both the program and the library need libm, then
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# it needs to be sorted last. (TODO)
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AT_CLEANUP
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