mirror of
git://git.code.sf.net/p/zsh/code
synced 2024-11-19 13:33:52 +01:00
434 lines
12 KiB
Plaintext
434 lines
12 KiB
Plaintext
dnl
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dnl Autconf tests for zsh.
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dnl
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dnl Copyright (c) 1995-1997 Richard Coleman
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dnl All rights reserved.
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dnl
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dnl Permission is hereby granted, without written agreement and without
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dnl license or royalty fees, to use, copy, modify, and distribute this
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dnl software and to distribute modified versions of this software for any
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dnl purpose, provided that the above copyright notice and the following
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dnl two paragraphs appear in all copies of this software.
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dnl
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dnl In no event shall Richard Coleman or the Zsh Development Group be liable
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dnl to any party for direct, indirect, special, incidental, or consequential
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dnl damages arising out of the use of this software and its documentation,
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dnl even if Richard Coleman and the Zsh Development Group have been advised of
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dnl the possibility of such damage.
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dnl
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dnl Richard Coleman and the Zsh Development Group specifically disclaim any
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dnl warranties, including, but not limited to, the implied warranties of
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dnl merchantability and fitness for a particular purpose. The software
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dnl provided hereunder is on an "as is" basis, and Richard Coleman and the
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dnl Zsh Development Group have no obligation to provide maintenance,
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dnl support, updates, enhancements, or modifications.
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dnl
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dnl
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dnl zsh_SYS_DYNAMIC_BROKEN
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dnl Check whether static/shared library linking is broken.
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dnl
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dnl On some systems, static modifiable library symbols (such as environ)
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dnl may appear only in statically linked libraries. If this is the case,
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dnl then two shared libraries that reference the same symbol, each linked
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dnl with the static library, could be given distinct copies of the symbol.
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dnl If this is the case then dynamic linking is FUBAR.
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dnl
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AC_DEFUN(zsh_SYS_DYNAMIC_BROKEN,
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[AC_CACHE_CHECK([if static/shared library linking is broken],
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zsh_cv_sys_dynamic_broken,
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[if test "$zsh_cv_func_dlsym_needs_underscore" = yes; then
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us=_
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else
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us=
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fi
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echo '
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extern char **environ;
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void *symlist1[] = {
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(void *)&environ,
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(void *)0
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};
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' > conftest1.c
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sed 's/symlist1/symlist2/' < conftest1.c > conftest2.c
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if $CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest1.c 1>&5 2>&5 &&
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$DLLD -o conftest1.$DL_EXT $LDFLAGS $DLLDFLAGS conftest1.o $LIBS 1>&5 2>&5 &&
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$CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest2.c 1>&5 2>&5 &&
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$DLLD -o conftest2.$DL_EXT $LDFLAGS $DLLDFLAGS conftest2.o $LIBS 1>&5 2>&5; then
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AC_TRY_RUN([
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#ifdef HAVE_DLFCN_H
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#include <dlfcn.h>
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#else
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#include <sys/types.h>
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#include <nlist.h>
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#include <link.h>
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#endif
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#ifndef RTLD_LAZY
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#define RTLD_LAZY 1
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#endif
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#ifndef RTLD_GLOBAL
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#define RTLD_GLOBAL 0
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#endif
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main()
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{
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void *handle1, *handle2;
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void **symlist1, **symlist2;
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handle1 = dlopen("./conftest1.$DL_EXT", RTLD_LAZY | RTLD_GLOBAL);
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if(!handle1) exit(1);
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handle2 = dlopen("./conftest2.$DL_EXT", RTLD_LAZY | RTLD_GLOBAL);
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if(!handle2) exit(1);
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symlist1 = (void **) dlsym(handle1, "${us}symlist1");
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symlist2 = (void **) dlsym(handle2, "${us}symlist2");
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if(!symlist1 || !symlist2) exit(1);
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for(; *symlist1; symlist1++, symlist2++)
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if(*symlist1 != *symlist2)
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exit(1);
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exit(0);
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}
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], [zsh_cv_sys_dynamic_broken=no],
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[zsh_cv_sys_dynamic_broken=yes],
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[zsh_cv_sys_dynamic_broken=yes]
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)
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else
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zsh_cv_sys_dynamic_broken=yes
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fi
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])
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])
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dnl
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dnl zsh_SYS_DYNAMIC_CLASH
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dnl Check whether symbol name clashes in shared libraries are acceptable.
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dnl
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AC_DEFUN(zsh_SYS_DYNAMIC_CLASH,
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[AC_CACHE_CHECK([if name clashes in shared objects are OK],
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zsh_cv_sys_dynamic_clash_ok,
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[if test "$zsh_cv_func_dlsym_needs_underscore" = yes; then
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us=_
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else
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us=
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fi
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echo 'int fred () { return 42; }' > conftest1.c
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echo 'int fred () { return 69; }' > conftest2.c
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if $CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest1.c 1>&5 2>&5 &&
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$DLLD -o conftest1.$DL_EXT $LDFLAGS $DLLDFLAGS conftest1.o $LIBS 1>&5 2>&5 &&
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$CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest2.c 1>&5 2>&5 &&
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$DLLD -o conftest2.$DL_EXT $LDFLAGS $DLLDFLAGS conftest2.o $LIBS 1>&5 2>&5; then
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AC_TRY_RUN([
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#ifdef HAVE_DLFCN_H
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#include <dlfcn.h>
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#else
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#include <sys/types.h>
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#include <nlist.h>
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#include <link.h>
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#endif
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#ifndef RTLD_LAZY
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#define RTLD_LAZY 1
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#endif
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#ifndef RTLD_GLOBAL
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#define RTLD_GLOBAL 0
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#endif
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main()
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{
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void *handle1, *handle2;
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int (*fred1)(), (*fred2)();
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handle1 = dlopen("./conftest1.$DL_EXT", RTLD_LAZY | RTLD_GLOBAL);
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if(!handle1) exit(1);
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handle2 = dlopen("./conftest2.$DL_EXT", RTLD_LAZY | RTLD_GLOBAL);
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if(!handle2) exit(1);
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fred1 = (int (*)()) dlsym(handle1, "${us}fred");
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fred2 = (int (*)()) dlsym(handle2, "${us}fred");
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if(!fred1 || !fred2) exit(1);
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exit((*fred1)() != 42 || (*fred2)() != 69);
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}
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], [zsh_cv_sys_dynamic_clash_ok=yes],
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[zsh_cv_sys_dynamic_clash_ok=no],
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[zsh_cv_sys_dynamic_clash_ok=no]
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)
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else
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zsh_cv_sys_dynamic_clash_ok=no
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fi
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])
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if test "$zsh_cv_sys_dynamic_clash_ok" = yes; then
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AC_DEFINE(DYNAMIC_NAME_CLASH_OK)
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fi
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])
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dnl
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dnl zsh_SYS_DYNAMIC_GLOBAL
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dnl Check whether symbols in one dynamically loaded library are
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dnl available to another dynamically loaded library.
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dnl
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AC_DEFUN(zsh_SYS_DYNAMIC_GLOBAL,
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[AC_CACHE_CHECK([for working RTLD_GLOBAL],
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zsh_cv_sys_dynamic_rtld_global,
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[if test "$zsh_cv_func_dlsym_needs_underscore" = yes; then
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us=_
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else
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us=
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fi
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echo 'int fred () { return 42; }' > conftest1.c
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echo 'extern int fred(); int barney () { return fred() + 27; }' > conftest2.c
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if $CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest1.c 1>&5 2>&5 &&
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$DLLD -o conftest1.$DL_EXT $LDFLAGS $DLLDFLAGS conftest1.o $LIBS 1>&5 2>&5 &&
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$CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest2.c 1>&5 2>&5 &&
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$DLLD -o conftest2.$DL_EXT $LDFLAGS $DLLDFLAGS conftest2.o $LIBS 1>&5 2>&5; then
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AC_TRY_RUN([
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#ifdef HAVE_DLFCN_H
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#include <dlfcn.h>
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#else
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#include <sys/types.h>
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#include <nlist.h>
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#include <link.h>
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#endif
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#ifndef RTLD_LAZY
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#define RTLD_LAZY 1
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#endif
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#ifndef RTLD_GLOBAL
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#define RTLD_GLOBAL 0
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#endif
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main()
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{
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void *handle;
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int (*barneysym)();
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handle = dlopen("./conftest1.$DL_EXT", RTLD_LAZY | RTLD_GLOBAL);
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if(!handle) exit(1);
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handle = dlopen("./conftest2.$DL_EXT", RTLD_LAZY | RTLD_GLOBAL);
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if(!handle) exit(1);
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barneysym = (int (*)()) dlsym(handle, "${us}barney");
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if(!barneysym) exit(1);
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exit((*barneysym)() != 69);
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}
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], [zsh_cv_sys_dynamic_rtld_global=yes],
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[zsh_cv_sys_dynamic_rtld_global=no],
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[zsh_cv_sys_dynamic_rtld_global=no]
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)
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else
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zsh_cv_sys_dynamic_rtld_global=no
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fi
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])
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])
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dnl
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dnl zsh_SYS_DYNAMIC_EXECSYMS
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dnl Check whether symbols in the executable are available to dynamically
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dnl loaded libraries.
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dnl
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AC_DEFUN(zsh_SYS_DYNAMIC_EXECSYMS,
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[AC_CACHE_CHECK([whether symbols in the executable are available],
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zsh_cv_sys_dynamic_execsyms,
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[if test "$zsh_cv_func_dlsym_needs_underscore" = yes; then
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us=_
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else
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us=
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fi
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echo 'extern int fred(); int barney () { return fred() + 27; }' > conftest1.c
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if $CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest1.c 1>&5 2>&5 &&
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$DLLD -o conftest1.$DL_EXT $LDFLAGS $DLLDFLAGS conftest1.o $LIBS 1>&5 2>&5; then
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save_ldflags=$LDFLAGS
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LDFLAGS="$LDFLAGS $EXTRA_LDFLAGS"
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AC_TRY_RUN([
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#ifdef HAVE_DLFCN_H
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#include <dlfcn.h>
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#else
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#include <sys/types.h>
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#include <nlist.h>
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#include <link.h>
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#endif
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#ifndef RTLD_LAZY
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#define RTLD_LAZY 1
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#endif
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#ifndef RTLD_GLOBAL
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#define RTLD_GLOBAL 0
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#endif
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main()
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{
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void *handle;
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int (*barneysym)();
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handle = dlopen("./conftest1.$DL_EXT", RTLD_LAZY | RTLD_GLOBAL);
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if(!handle) exit(1);
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barneysym = (int (*)()) dlsym(handle, "${us}barney");
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if(!barneysym) exit(1);
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exit((*barneysym)() != 69);
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}
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int fred () { return 42; }
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], [zsh_cv_sys_dynamic_execsyms=yes],
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[zsh_cv_sys_dynamic_execsyms=no],
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[zsh_cv_sys_dynamic_execsyms=no]
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)
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LDFLAGS=$save_ldflags
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else
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zsh_cv_sys_dynamic_execsyms=no
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fi
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])
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])
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dnl
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dnl zsh_SYS_DYNAMIC_STRIP_EXE
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dnl Check whether it is safe to strip executables.
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dnl
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AC_DEFUN(zsh_SYS_DYNAMIC_STRIP_EXE,
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[AC_REQUIRE([zsh_SYS_DYNAMIC_EXECSYMS])
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AC_CACHE_CHECK([whether executables can be stripped],
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zsh_cv_sys_dynamic_strip_exe,
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[if test "$zsh_cv_sys_dynamic_execsyms" != yes; then
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zsh_cv_sys_dynamic_strip_exe=yes
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elif
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if test "$zsh_cv_func_dlsym_needs_underscore" = yes; then
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us=_
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else
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us=
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fi
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echo 'extern int fred(); int barney() { return fred() + 27; }' > conftest1.c
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$CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest1.c 1>&5 2>&5 &&
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$DLLD -o conftest1.$DL_EXT $LDFLAGS $DLLDFLAGS conftest1.o $LIBS 1>&5 2>&5; then
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save_ldflags=$LDFLAGS
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LDFLAGS="$LDFLAGS $EXTRA_LDFLAGS -s"
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AC_TRY_RUN([
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#ifdef HAVE_DLFCN_H
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#include <dlfcn.h>
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#else
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#include <sys/types.h>
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#include <nlist.h>
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#include <link.h>
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#endif
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#ifndef RTLD_LAZY
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#define RTLD_LAZY 1
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#endif
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#ifndef RTLD_GLOBAL
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#define RTLD_GLOBAL 0
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#endif
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main()
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{
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void *handle;
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int (*barneysym)();
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handle = dlopen("./conftest1.$DL_EXT", RTLD_LAZY | RTLD_GLOBAL);
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if(!handle) exit(1);
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barneysym = (int (*)()) dlsym(handle, "${us}barney");
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if(!barneysym) exit(1);
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exit((*barneysym)() != 69);
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}
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int fred () { return 42; }
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], [zsh_cv_sys_dynamic_strip_exe=yes],
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[zsh_cv_sys_dynamic_strip_exe=no],
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[zsh_cv_sys_dynamic_strip_exe=no]
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)
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LDFLAGS=$save_ldflags
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else
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zsh_cv_sys_dynamic_strip_exe=no
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fi
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])
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])
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dnl
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dnl zsh_SYS_DYNAMIC_STRIP_EXE
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dnl Check whether it is safe to strip dynamically loaded libraries.
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dnl
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AC_DEFUN(zsh_SYS_DYNAMIC_STRIP_LIB,
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[AC_CACHE_CHECK([whether libraries can be stripped],
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zsh_cv_sys_dynamic_strip_lib,
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[if test "$zsh_cv_func_dlsym_needs_underscore" = yes; then
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us=_
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else
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us=
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fi
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echo 'int fred () { return 42; }' > conftest1.c
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if $CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest1.c 1>&5 2>&5 &&
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$DLLD -o conftest1.$DL_EXT $LDFLAGS $DLLDFLAGS -s conftest1.o $LIBS 1>&5 2>&5; then
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AC_TRY_RUN([
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#ifdef HAVE_DLFCN_H
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#include <dlfcn.h>
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#else
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#include <sys/types.h>
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#include <nlist.h>
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#include <link.h>
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#endif
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#ifndef RTLD_LAZY
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#define RTLD_LAZY 1
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#endif
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#ifndef RTLD_GLOBAL
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#define RTLD_GLOBAL 0
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#endif
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main()
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{
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void *handle;
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int (*fredsym)();
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handle = dlopen("./conftest1.$DL_EXT", RTLD_LAZY | RTLD_GLOBAL);
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if(!handle) exit(1);
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fredsym = (int (*)()) dlsym(handle, "${us}fred");
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if(!fredsym) exit(1);
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exit((*fredsym)() != 42);
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}
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], [zsh_cv_sys_dynamic_strip_lib=yes],
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[zsh_cv_sys_dynamic_strip_lib=no],
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[zsh_cv_sys_dynamic_strip_lib=no]
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)
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else
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zsh_cv_sys_dynamic_strip_lib=no
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fi
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])
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])
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dnl
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dnl zsh_PATH_UTMP(filename)
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dnl Search for a specified utmp-type file.
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dnl
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AC_DEFUN(zsh_PATH_UTMP,
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[AC_CACHE_CHECK([for $1 file], [zsh_cv_path_$1],
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[for dir in /etc /usr/etc /var/adm /usr/adm /var/run ./conftest; do
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zsh_cv_path_$1=${dir}/$1
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test -f $zsh_cv_path_$1 && break
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zsh_cv_path_$1=no
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done
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])
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if test $zsh_cv_path_$1 != no; then
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AC_DEFINE_UNQUOTED(PATH_[]translit($1, [a-z], [A-Z])[]_FILE, "$zsh_cv_path_$1")
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fi
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])
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dnl
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dnl zsh_TYPE_EXISTS(#includes, type name)
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dnl Check whether a specified type exists.
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dnl
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AC_DEFUN(zsh_TYPE_EXISTS,
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[AC_CACHE_CHECK([for $2], [zsh_cv_type_exists_[]translit($2, [ ], [_])],
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[AC_TRY_COMPILE([$1], [$2 testvar;],
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[zsh_cv_type_exists_[]translit($2, [ ], [_])=yes],
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[zsh_cv_type_exists_[]translit($2, [ ], [_])=no])
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])
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if test $zsh_cv_type_exists_[]translit($2, [ ], [_]) = yes; then
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AC_DEFINE(HAVE_[]translit($2, [ a-z], [_A-Z]))
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fi
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])
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dnl
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dnl zsh_STRUCT_MEMBER(#includes, type name, member name)
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dnl Check whether a specified aggregate type exists and contains
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dnl a specified member.
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dnl
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AC_DEFUN(zsh_STRUCT_MEMBER,
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[AC_CACHE_CHECK([for $3 in $2], [zsh_cv_struct_member_[]translit($2, [ ], [_])_$3],
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[AC_TRY_COMPILE([$1], [$2 testvar; testvar.$3;],
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[zsh_cv_struct_member_[]translit($2, [ ], [_])_$3=yes],
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[zsh_cv_struct_member_[]translit($2, [ ], [_])_$3=no])
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])
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if test $zsh_cv_struct_member_[]translit($2, [ ], [_])_$3 = yes; then
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AC_DEFINE(HAVE_[]translit($2_$3, [ a-z], [_A-Z]))
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fi
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])
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