1define(pkg_major, 1) 2define(pkg_minor, 1) 3define(pkg_extra, ) 4define(pkg_maintainer, libunwind-devel@nongnu.org) 5define(mkvers, $1.$2$3) 6dnl Process this file with autoconf to produce a configure script. 7AC_INIT([libunwind],[mkvers(pkg_major, pkg_minor, pkg_extra)],[pkg_maintainer]) 8AC_CONFIG_SRCDIR(src/mi/backtrace.c) 9AC_CONFIG_AUX_DIR(config) 10AC_CANONICAL_TARGET 11AM_INIT_AUTOMAKE([1.6 subdir-objects]) 12AM_MAINTAINER_MODE 13AC_CONFIG_HEADERS([include/config.h]) 14 15dnl Checks for programs. 16AC_PROG_CC 17AC_PROG_CXX 18AC_PROG_INSTALL 19AC_PROG_MAKE_SET 20LT_INIT 21AM_PROG_AS 22AM_PROG_CC_C_O 23 24dnl Checks for libraries. 25AC_CHECK_LIB(uca, __uc_get_grs) 26OLD_LIBS=${LIBS} 27AC_SEARCH_LIBS(dlopen, dl) 28LIBS=${OLD_LIBS} 29case "$ac_cv_search_dlopen" in 30 -l*) DLLIB=$ac_cv_search_dlopen;; 31 *) DLLIB="";; 32esac 33 34CHECK_ATOMIC_OPS 35 36# ANDROID support update. 37CHECK_ANDROID 38# End of ANDROID update. 39 40dnl Checks for header files. 41AC_HEADER_STDC 42AC_CHECK_HEADERS(asm/ptrace_offsets.h endian.h sys/endian.h execinfo.h \ 43 ia64intrin.h sys/uc_access.h unistd.h signal.h sys/types.h \ 44 sys/procfs.h sys/ptrace.h byteswap.h elf.h sys/elf.h link.h sys/link.h) 45 46dnl Checks for typedefs, structures, and compiler characteristics. 47AC_C_CONST 48AC_C_INLINE 49AC_TYPE_SIZE_T 50AC_CHECK_SIZEOF(off_t) 51 52CPPFLAGS="${CPPFLAGS} -D_GNU_SOURCE" 53 54AC_CHECK_MEMBERS([struct dl_phdr_info.dlpi_subs],,,[#include <link.h>]) 55AC_CHECK_TYPES([struct elf_prstatus, struct prstatus], [], [], 56[$ac_includes_default 57#if HAVE_SYS_PROCFS_H 58# include <sys/procfs.h> 59#endif 60]) 61 62AC_CHECK_DECLS([PTRACE_POKEUSER, PTRACE_POKEDATA, 63PTRACE_TRACEME, PTRACE_CONT, PTRACE_SINGLESTEP, 64PTRACE_SYSCALL, PT_IO, PT_GETREGS, 65PT_GETFPREGS, PT_CONTINUE, PT_TRACE_ME, 66PT_STEP, PT_SYSCALL], [], [], 67[$ac_includes_default 68#if HAVE_SYS_TYPES_H 69#include <sys/types.h> 70#endif 71#include <sys/ptrace.h> 72]) 73 74dnl Checks for library functions. 75AC_CHECK_FUNCS(dl_iterate_phdr dl_phdr_removals_counter dlmodinfo getunwind \ 76 ttrace mincore) 77 78AC_MSG_CHECKING([if building with AltiVec]) 79AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ 80#ifndef __ALTIVEC__ 81# error choke 82#endif 83]])], [use_altivec=yes],[use_altivec=no]) 84AM_CONDITIONAL(USE_ALTIVEC, [test x$use_altivec = xyes]) 85AC_MSG_RESULT([$use_altivec]) 86 87AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ 88#ifndef __powerpc64__ 89# error choke 90#endif 91]])], [ppc_bits=64], [ppc_bits=32]) 92 93AC_DEFUN([SET_ARCH],[ 94 AS_CASE([$1], 95 [arm*],[$2=arm], 96 [i?86],[$2=x86], 97 [hppa*],[$2=hppa], 98 [mips*],[$2=mips], 99 [powerpc*],[$2=ppc$ppc_bits], 100 [sh*],[$2=sh], 101 [amd64],[$2=x86_64], 102 [$2=$1]) 103]) dnl SET_ARCH 104 105SET_ARCH([$build_cpu],[build_arch]) 106SET_ARCH([$host_cpu],[host_arch]) 107SET_ARCH([$target_cpu],[target_arch]) 108 109AC_ARG_ENABLE(coredump, 110 AS_HELP_STRING([--enable-coredump],[building libunwind-coredump library]),, 111 [AS_CASE([$host_arch], [aarch64*|arm*|mips*|sh*|x86*], [enable_coredump=yes], [enable_coredump=no])] 112) 113 114AC_MSG_CHECKING([if we should build libunwind-coredump]) 115AC_MSG_RESULT([$enable_coredump]) 116 117AC_ARG_ENABLE(ptrace, 118 AS_HELP_STRING([--enable-ptrace],[building libunwind-ptrace library]),, 119 [AC_CHECK_HEADER([sys/ptrace.h], [enable_ptrace=yes], [enable_ptrace=no])] 120) 121 122AC_MSG_CHECKING([if we should build libunwind-ptrace]) 123AC_MSG_RESULT([$enable_ptrace]) 124 125AC_ARG_ENABLE(setjmp, 126 AS_HELP_STRING([--enable-setjmp],[building libunwind-setjmp library]),, 127 [AS_IF([test x$target_arch == x$host_arch], [enable_setjmp=yes], [enable_setjmp=no])] 128) 129 130AC_MSG_CHECKING([if we should build libunwind-setjmp]) 131AC_MSG_RESULT([$enable_setjmp]) 132 133AC_MSG_CHECKING([for build architecture]) 134AC_MSG_RESULT([$build_arch]) 135AC_MSG_CHECKING([for host architecture]) 136AC_MSG_RESULT([$host_arch]) 137AC_MSG_CHECKING([for target architecture]) 138AC_MSG_RESULT([$target_arch]) 139AC_MSG_CHECKING([for target operating system]) 140AC_MSG_RESULT([$target_os]) 141 142AM_CONDITIONAL(BUILD_COREDUMP, test x$enable_coredump = xyes) 143AM_CONDITIONAL(BUILD_PTRACE, test x$enable_ptrace = xyes) 144AM_CONDITIONAL(BUILD_SETJMP, test x$enable_setjmp = xyes) 145AM_CONDITIONAL(REMOTE_ONLY, test x$target_arch != x$host_arch) 146AM_CONDITIONAL(ARCH_AARCH64, test x$target_arch = xaarch64) 147AM_CONDITIONAL(ARCH_ARM, test x$target_arch = xarm) 148AM_CONDITIONAL(ARCH_IA64, test x$target_arch = xia64) 149AM_CONDITIONAL(ARCH_HPPA, test x$target_arch = xhppa) 150AM_CONDITIONAL(ARCH_MIPS, test x$target_arch = xmips) 151AM_CONDITIONAL(ARCH_X86, test x$target_arch = xx86) 152AM_CONDITIONAL(ARCH_X86_64, test x$target_arch = xx86_64) 153AM_CONDITIONAL(ARCH_PPC32, test x$target_arch = xppc32) 154AM_CONDITIONAL(ARCH_PPC64, test x$target_arch = xppc64) 155AM_CONDITIONAL(ARCH_SH, test x$target_arch = xsh) 156AM_CONDITIONAL(OS_LINUX, expr x$target_os : xlinux >/dev/null) 157AM_CONDITIONAL(OS_HPUX, expr x$target_os : xhpux >/dev/null) 158AM_CONDITIONAL(OS_FREEBSD, expr x$target_os : xfreebsd >/dev/null) 159AM_CONDITIONAL(OS_QNX, expr x$target_os : xnto-qnx >/dev/null) 160 161AC_MSG_CHECKING([for ELF helper width]) 162case "${target_arch}" in 163(arm|hppa|ppc32|x86|sh) use_elf32=yes; AC_MSG_RESULT([32]);; 164(aarch64|ia64|ppc64|x86_64) use_elf64=yes; AC_MSG_RESULT([64]);; 165(mips) use_elfxx=yes; AC_MSG_RESULT([xx]);; 166*) AC_MSG_ERROR([Unknown ELF target: ${target_arch}]) 167esac 168AM_CONDITIONAL(USE_ELF32, [test x$use_elf32 = xyes]) 169AM_CONDITIONAL(USE_ELF64, [test x$use_elf64 = xyes]) 170AM_CONDITIONAL(USE_ELFXX, [test x$use_elfxx = xyes]) 171 172AC_MSG_CHECKING([whether to include DWARF support]) 173if test x$target_arch != xia64; then 174 use_dwarf=yes 175else 176 use_dwarf=no 177fi 178AM_CONDITIONAL(USE_DWARF, [test x$use_dwarf = xyes]) 179AC_MSG_RESULT([$use_dwarf]) 180 181if test x$target_arch = xppc64; then 182 libdir='${exec_prefix}/lib64' 183 AC_MSG_NOTICE([PowerPC64 detected, lib will be installed ${libdir}]); 184 AC_SUBST([libdir]) 185fi 186 187AC_MSG_CHECKING([whether to restrict build to remote support]) 188if test x$target_arch != x$host_arch; then 189 CPPFLAGS="${CPPFLAGS} -DUNW_REMOTE_ONLY" 190 remote_only=yes 191else 192 remote_only=no 193fi 194AC_MSG_RESULT([$remote_only]) 195 196AC_MSG_CHECKING([whether to enable debug support]) 197AC_ARG_ENABLE(debug, 198AS_HELP_STRING([--enable-debug],[turn on debug support (slows down execution)])) 199if test x$enable_debug = xyes; then 200 CPPFLAGS="${CPPFLAGS} -DDEBUG" 201else 202 CPPFLAGS="${CPPFLAGS} -DNDEBUG" 203fi 204AC_MSG_RESULT([$enable_debug]) 205 206AC_MSG_CHECKING([whether to enable C++ exception support]) 207AC_ARG_ENABLE(cxx_exceptions, 208AS_HELP_STRING([--enable-cxx-exceptions],[use libunwind to handle C++ exceptions]),, 209[ 210# C++ exception handling doesn't work too well on x86 211case $target_arch in 212 x86*) enable_cxx_exceptions=no;; 213 aarch64*) enable_cxx_exceptions=no;; 214 arm*) enable_cxx_exceptions=no;; 215 mips*) enable_cxx_exceptions=no;; 216 *) enable_cxx_exceptions=yes;; 217esac 218]) 219 220AM_CONDITIONAL([SUPPORT_CXX_EXCEPTIONS], [test x$enable_cxx_exceptions = xyes]) 221AC_MSG_RESULT([$enable_cxx_exceptions]) 222 223AC_MSG_CHECKING([whether to load .debug_frame sections]) 224AC_ARG_ENABLE(debug_frame, 225AS_HELP_STRING([--enable-debug-frame],[Load the ".debug_frame" section if available]),, [ 226case "${target_arch}" in 227 (arm) enable_debug_frame=yes;; 228 (*) enable_debug_frame=no;; 229esac]) 230if test x$enable_debug_frame = xyes; then 231 AC_DEFINE([CONFIG_DEBUG_FRAME], [], [Enable Debug Frame]) 232fi 233AC_MSG_RESULT([$enable_debug_frame]) 234 235AC_MSG_CHECKING([whether to block signals during mutex ops]) 236AC_ARG_ENABLE(block_signals, 237AS_HELP_STRING([--enable-block-signals],[Block signals before performing mutex operations]),, 238[enable_block_signals=yes]) 239if test x$enable_block_signals = xyes; then 240 AC_DEFINE([CONFIG_BLOCK_SIGNALS], [], [Block signals before mutex operations]) 241fi 242AC_MSG_RESULT([$enable_block_signals]) 243 244AC_MSG_CHECKING([whether to validate memory addresses before use]) 245AC_ARG_ENABLE(conservative_checks, 246AS_HELP_STRING([--enable-conservative-checks],[Validate all memory addresses before use]),, 247[enable_conservative_checks=yes]) 248if test x$enable_conservative_checks = xyes; then 249 AC_DEFINE(CONSERVATIVE_CHECKS, 1, 250 [Define to 1 if you want every memory access validated]) 251fi 252AC_MSG_RESULT([$enable_conservative_checks]) 253 254AC_MSG_CHECKING([whether to enable msabi support]) 255AC_ARG_ENABLE(msabi_support, 256AS_HELP_STRING([--enable-msabi-support],[Enables support for Microsoft ABI extensions])) 257if test x$enable_msabi_support = xyes; then 258 AC_DEFINE([CONFIG_MSABI_SUPPORT], [], [Support for Microsoft ABI extensions]) 259fi 260AC_MSG_RESULT([$enable_msabi_support]) 261 262LIBLZMA= 263AC_MSG_CHECKING([whether to support LZMA-compressed symbol tables]) 264AC_ARG_ENABLE(minidebuginfo, 265AS_HELP_STRING([--enable-minidebuginfo], [Enables support for LZMA-compressed symbol tables]),, [enable_minidebuginfo=auto]) 266AC_MSG_RESULT([$enable_minidebuginfo]) 267if test x$enable_minidebuginfo != xno; then 268 AC_CHECK_LIB([lzma], [lzma_mf_is_supported], 269 [LIBLZMA=-llzma 270 AC_DEFINE([HAVE_LZMA], [1], [Define if you have liblzma]) 271 enable_minidebuginfo=yes], 272 [if test x$enable_minidebuginfo = xyes; then 273 AC_MSG_FAILURE([liblzma not found]) 274 fi]) 275fi 276AC_SUBST([LIBLZMA]) 277AM_CONDITIONAL(HAVE_LZMA, test x$enable_minidebuginfo = xyes) 278 279LIBUNWIND___THREAD 280 281AC_MSG_CHECKING([for Intel compiler]) 282AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[#ifndef __INTEL_COMPILER 283#error choke me 284#endif]])],[intel_compiler=yes],[intel_compiler=no]) 285 286if test x$GCC = xyes -a x$intel_compiler != xyes; then 287 CFLAGS="${CFLAGS} -fexceptions -Wall -Wsign-compare" 288fi 289AC_MSG_RESULT([$intel_compiler]) 290 291AC_MSG_CHECKING([for QCC compiler]) 292AS_CASE([$CC], [qcc*|QCC*], [qcc_compiler=yes], [qcc_compiler=no]) 293AC_MSG_RESULT([$qcc_compiler]) 294 295if test x$intel_compiler = xyes; then 296 AC_MSG_CHECKING([if linker supports -static-libcxa]) 297 save_LDFLAGS="$LDFLAGS" 298 LDFLAGS="$LDFLAGS -static-libcxa" 299 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[have_static_libcxa=yes],[have_static_libcxa=no]) 300 LDFLAGS="$save_LDFLAGS" 301 if test "x$have_static_libcxa" = xyes; then 302 LDFLAGS_STATIC_LIBCXA="-XCClinker -static-libcxa" 303 fi 304 AC_MSG_RESULT([$have_static_libcxa]) 305fi 306 307if test x$qcc_compiler = xyes; then 308 LDFLAGS_NOSTARTFILES="-XCClinker -Wc,-nostartfiles" 309else 310 LDFLAGS_NOSTARTFILES="-XCClinker -nostartfiles" 311fi 312 313if test x$GCC = xyes -a x$intel_compiler != xyes -a x$qcc_compiler != xyes; then 314 LIBCRTS="-lgcc" 315fi 316 317AC_MSG_CHECKING([for __builtin___clear_cache]) 318AC_LINK_IFELSE( 319 [AC_LANG_PROGRAM([[]], [[__builtin___clear_cache(0, 0)]])], 320 [have__builtin___clear_cache=yes], 321 [have__builtin___clear_cache=no]) 322if test x$have__builtin___clear_cache = xyes; then 323 AC_DEFINE([HAVE__BUILTIN___CLEAR_CACHE], [1], 324 [Defined if __builtin___clear_cache() is available]) 325fi 326AC_MSG_RESULT([$have__builtin___clear_cache]) 327 328AC_MSG_CHECKING([for __builtin_unreachable]) 329AC_LINK_IFELSE( 330 [AC_LANG_PROGRAM([[]], [[__builtin_unreachable()]])], 331 [have__builtin_unreachable=yes], 332 [have__builtin_unreachable=no]) 333if test x$have__builtin_unreachable = xyes; then 334 AC_DEFINE([HAVE__BUILTIN_UNREACHABLE], [1], 335 [Defined if __builtin_unreachable() is available]) 336fi 337AC_MSG_RESULT([$have__builtin_unreachable]) 338 339AC_MSG_CHECKING([for __sync atomics]) 340AC_LINK_IFELSE( 341 [AC_LANG_PROGRAM([[]], [[ 342 __sync_bool_compare_and_swap((int *)0, 0, 1); 343 __sync_fetch_and_add((int *)0, 1); 344 ]])], 345 [have_sync_atomics=yes], 346 [have_sync_atomics=no]) 347if test x$have_sync_atomics = xyes; then 348 AC_DEFINE([HAVE_SYNC_ATOMICS], [1], 349 [Defined if __sync atomics are available]) 350fi 351AC_MSG_RESULT([$have_sync_atomics]) 352 353CCASFLAGS="${CCASFLAGS} ${CPPFLAGS}" 354 355arch="$target_arch" 356ARCH=`echo $target_arch | tr [a-z] [A-Z]` 357 358dnl create shell variables from the M4 macros: 359PKG_MAJOR=pkg_major 360PKG_MINOR=pkg_minor 361PKG_EXTRA=pkg_extra 362PKG_MAINTAINER=pkg_maintainer 363 364old_LIBS="$LIBS" 365LIBS="" 366AC_SEARCH_LIBS(backtrace, execinfo) 367LIBS="$old_LIBS" 368 369AC_SUBST(build_arch) 370AC_SUBST(target_os) 371AC_SUBST(arch) 372AC_SUBST(ARCH) 373AC_SUBST(LDFLAGS_STATIC_LIBCXA) 374AC_SUBST(LDFLAGS_NOSTARTFILES) 375AC_SUBST(LIBCRTS) 376AC_SUBST(PKG_MAJOR) 377AC_SUBST(PKG_MINOR) 378AC_SUBST(PKG_EXTRA) 379AC_SUBST(PKG_MAINTAINER) 380AC_SUBST(enable_cxx_exceptions) 381AC_SUBST(enable_debug_frame) 382AC_SUBST(DLLIB) 383 384AC_CONFIG_FILES(Makefile src/Makefile tests/Makefile tests/check-namespace.sh 385 doc/Makefile doc/common.tex include/libunwind-common.h 386 include/libunwind.h include/tdep/libunwind_i.h) 387AC_CONFIG_FILES(src/unwind/libunwind.pc src/coredump/libunwind-coredump.pc 388 src/ptrace/libunwind-ptrace.pc src/setjmp/libunwind-setjmp.pc 389 src/libunwind-generic.pc) 390AC_OUTPUT 391