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56 lines
1.5 KiB
Plaintext
56 lines
1.5 KiB
Plaintext
dnl Initialize the hell package.
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AC_INIT(ltdl.c)
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AM_INIT_AUTOMAKE(libltdl,1.0)
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AC_PROG_CC
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AM_PROG_LIBTOOL
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AC_HEADER_STDC
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AC_CHECK_HEADERS(malloc.h dlfcn.h dl.h)
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AC_CHECK_HEADERS(string.h strings.h, break)
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AC_CHECK_FUNCS(strdup strrchr)
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LIBADD_DL=
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AC_CHECK_FUNCS(dlopen, AC_DEFINE(HAVE_LIBDL),
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[AC_CHECK_LIB(dl, dlopen, [AC_DEFINE(HAVE_LIBDL) LIBADD_DL="-ldl"],
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[AC_CHECK_LIB(dld, dld_link, [AC_DEFINE(HAVE_DLD) LIBADD_DL="-ldld"],
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[AC_CHECK_FUNCS(shl_load, AC_DEFINE(HAVE_SHL_LOAD) )]
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)]
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)]
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)
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AC_SUBST(LIBADD_DL)
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AC_MSG_CHECKING(for underscore before symbols)
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AC_CACHE_VAL(libltdl_cv_uscore,[
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echo "main(){int i=1;} fnord(){int i=23; int ltuae=42;}" > conftest.c
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${CC} -c conftest.c > /dev/null
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if (nm conftest.$ac_objext | grep _fnord) > /dev/null; then
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libltdl_cv_uscore=yes
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else
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libltdl_cv_uscore=no
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fi])
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AC_MSG_RESULT($libltdl_cv_uscore)
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rm -f conftest*
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if test $libltdl_cv_uscore = yes; then
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if test $ac_cv_func_dlopen = yes || test $ac_cv_lib_dl_dlopen = yes ; then
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AC_MSG_CHECKING(whether we have to add an underscore for dlsym)
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AC_CACHE_VAL(libltdl_cv_need_uscore,AC_TRY_RUN([
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#include <dlfcn.h>
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#include <stdio.h>
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fnord() { int i=42;}
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main() { void *self, *ptr1, *ptr2; self=dlopen(NULL,RTLD_LAZY);
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if(self) { ptr1=dlsym(self,"fnord"); ptr2=dlsym(self,"_fnord");
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if(ptr1 && !ptr2) exit(0); } exit(1); }
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], libltdl_cv_need_uscore=no,
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[libltdl_cv_need_uscore=yes
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AC_DEFINE(NEED_USCORE)],
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libltdl_cv_need_uscore=no))
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AC_MSG_RESULT($libltdl_cv_need_uscore)
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fi
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fi
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dnl Output the makefile
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AC_OUTPUT(Makefile)
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