define(pkg_major, 1) define(pkg_minor, 6) define(pkg_extra, 2) define(pkg_maintainer, libunwind-devel@nongnu.org) define(mkvers, $1.$2.$3) dnl Process this file with autoconf to produce a configure script. AC_INIT([libunwind],[mkvers(pkg_major, pkg_minor, pkg_extra)],[pkg_maintainer]) AC_CONFIG_SRCDIR(src/mi/backtrace.c) AC_CONFIG_AUX_DIR(config) AC_CANONICAL_TARGET AM_INIT_AUTOMAKE([1.6 subdir-objects]) AM_MAINTAINER_MODE AC_CONFIG_HEADERS([include/config.h]) dnl Checks for programs. AC_PROG_CC AC_PROG_CXX AC_PROG_INSTALL AC_PROG_MAKE_SET m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) LT_INIT AM_PROG_AS AM_PROG_CC_C_O dnl Checks for libraries. AC_CHECK_LIB(uca, __uc_get_grs) OLD_LIBS=${LIBS} AC_SEARCH_LIBS(dlopen, dl) LIBS=${OLD_LIBS} case "$ac_cv_search_dlopen" in -l*) DLLIB=$ac_cv_search_dlopen;; *) DLLIB="";; esac dnl Checks for header files. AC_HEADER_STDC AC_CHECK_HEADERS(asm/ptrace_offsets.h asm/ptrace.h endian.h sys/endian.h sys/param.h \ execinfo.h ia64intrin.h sys/uc_access.h unistd.h signal.h sys/types.h \ sys/procfs.h sys/ptrace.h sys/syscall.h byteswap.h elf.h sys/elf.h \ link.h sys/link.h) dnl Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_C_INLINE AC_TYPE_SIZE_T AC_CHECK_SIZEOF(off_t) CPPFLAGS="${CPPFLAGS} -D_GNU_SOURCE" AC_CHECK_MEMBERS([struct dl_phdr_info.dlpi_subs],,,[#include ]) AC_CHECK_TYPES([struct elf_prstatus, struct prstatus], [], [], [$ac_includes_default #if HAVE_SYS_PROCFS_H # include #endif ]) AC_CHECK_DECLS([PTRACE_POKEUSER, PTRACE_POKEDATA, PTRACE_SETREGSET, PTRACE_TRACEME, PTRACE_CONT, PTRACE_SINGLESTEP, PTRACE_SYSCALL, PT_IO, PT_GETREGS, PT_GETFPREGS, PT_CONTINUE, PT_TRACE_ME, PT_STEP, PT_SYSCALL], [], [], [$ac_includes_default #if HAVE_SYS_TYPES_H #include #endif #include ]) dnl Checks for library functions. AC_CHECK_FUNCS(dl_iterate_phdr dl_phdr_removals_counter dlmodinfo getunwind \ ttrace mincore pipe2) AC_MSG_CHECKING([if building with AltiVec]) AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ #ifndef __ALTIVEC__ # error choke #endif ]])], [use_altivec=yes],[use_altivec=no]) AM_CONDITIONAL(USE_ALTIVEC, [test x$use_altivec = xyes]) AC_MSG_RESULT([$use_altivec]) AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ #ifndef __powerpc64__ # error choke #endif ]])], [ppc_bits=64], [ppc_bits=32]) AC_DEFUN([SET_ARCH],[ AS_CASE([$1], [aarch64*],[$2=aarch64], [arm*],[$2=arm], [i?86],[$2=x86], [hppa*],[$2=hppa], [mips*],[$2=mips], [powerpc*],[$2=ppc$ppc_bits], [sh*],[$2=sh], [amd64],[$2=x86_64], [tile*],[$2=tilegx], [riscv*],[$2=riscv], [$2=$1]) ]) dnl SET_ARCH SET_ARCH([$build_cpu],[build_arch]) SET_ARCH([$host_cpu],[host_arch]) SET_ARCH([$target_cpu],[target_arch]) # Check for Android AC_MSG_CHECKING([for Android]) android="no" case "$host_os" in *android*) android="yes" AC_MSG_RESULT([yes]) ;; *) AC_MSG_RESULT([no]) ;; esac AC_ARG_ENABLE(coredump, AS_HELP_STRING([--enable-coredump],[building libunwind-coredump library]),, [AS_CASE([$host_arch], [aarch64*|arm*|mips*|sh*|x86*|tile*|riscv*], [enable_coredump=yes], [enable_coredump=no])] ) AC_MSG_CHECKING([if we should build libunwind-coredump]) AC_MSG_RESULT([$enable_coredump]) AC_ARG_ENABLE(ptrace, AS_HELP_STRING([--enable-ptrace],[building libunwind-ptrace library]),, [AC_CHECK_HEADER([sys/ptrace.h], [enable_ptrace=yes], [enable_ptrace=no])] ) AC_MSG_CHECKING([if we should build libunwind-ptrace]) AC_MSG_RESULT([$enable_ptrace]) AC_ARG_ENABLE(setjmp, AS_HELP_STRING([--enable-setjmp],[building libunwind-setjmp library]),, [AS_IF([test x$target_arch = x$host_arch], [enable_setjmp=yes], [enable_setjmp=no])] ) AC_ARG_ENABLE(documentation, AS_HELP_STRING([--disable-documentation],[Disable generating the man pages]),, [enable_documentation=yes]) AC_ARG_ENABLE(tests, AS_HELP_STRING([--disable-tests],[Disable tests build]),, [enable_tests=yes]) AC_ARG_ENABLE(weak-backtrace, AS_HELP_STRING([--disable-weak-backtrace],[Do not provide the weak 'backtrace' symbol.]),, [enable_weak_backtrace=yes]) AC_ARG_ENABLE(unwind-header, AS_HELP_STRING([--disable-unwind-header],[Do not export the 'unwind.h' header]),, [enable_unwind_header=yes]) AC_MSG_CHECKING([if we should export unwind.h]) AC_MSG_RESULT([$enable_unwind_header]) AC_MSG_CHECKING([if we should build libunwind-setjmp]) AC_MSG_RESULT([$enable_setjmp]) AC_MSG_CHECKING([for build architecture]) AC_MSG_RESULT([$build_arch]) AC_MSG_CHECKING([for host architecture]) AC_MSG_RESULT([$host_arch]) AC_MSG_CHECKING([for target architecture]) AC_MSG_RESULT([$target_arch]) AC_MSG_CHECKING([for target operating system]) AC_MSG_RESULT([$target_os]) AM_CONDITIONAL(BUILD_COREDUMP, test x$enable_coredump = xyes) AM_CONDITIONAL(BUILD_PTRACE, test x$enable_ptrace = xyes) AM_CONDITIONAL(BUILD_SETJMP, test x$enable_setjmp = xyes) AM_CONDITIONAL(BUILD_UNWIND_HEADER, test "x$enable_unwind_header" = xyes) AM_CONDITIONAL(NO_PTRACE_TEST, test x$build_arch != x$host_arch) AM_CONDITIONAL(REMOTE_ONLY, test x$target_arch != x$host_arch) AM_CONDITIONAL(ARCH_AARCH64, test x$target_arch = xaarch64) AM_CONDITIONAL(ARCH_ARM, test x$target_arch = xarm) AM_CONDITIONAL(ARCH_IA64, test x$target_arch = xia64) AM_CONDITIONAL(ARCH_HPPA, test x$target_arch = xhppa) AM_CONDITIONAL(ARCH_MIPS, test x$target_arch = xmips) AM_CONDITIONAL(ARCH_X86, test x$target_arch = xx86) AM_CONDITIONAL(ARCH_X86_64, test x$target_arch = xx86_64) AM_CONDITIONAL(ARCH_PPC32, test x$target_arch = xppc32) AM_CONDITIONAL(ARCH_PPC64, test x$target_arch = xppc64) AM_CONDITIONAL(ARCH_SH, test x$target_arch = xsh) AM_CONDITIONAL(ARCH_TILEGX, test x$target_arch = xtilegx) AM_CONDITIONAL(ARCH_S390X, test x$target_arch = xs390x) AM_CONDITIONAL(ARCH_RISCV, test x$target_arch = xriscv) AM_CONDITIONAL(OS_LINUX, expr x$target_os : xlinux >/dev/null) AM_CONDITIONAL(OS_HPUX, expr x$target_os : xhpux >/dev/null) AM_CONDITIONAL(OS_FREEBSD, expr x$target_os : xfreebsd >/dev/null) AM_CONDITIONAL(OS_QNX, expr x$target_os : xnto-qnx >/dev/null) AM_CONDITIONAL(OS_SOLARIS, expr x$target_os : xsolaris >/dev/null) AC_MSG_CHECKING([for ELF helper width]) case "${target_arch}" in (arm|hppa|ppc32|x86|sh) use_elf32=yes; AC_MSG_RESULT([32]);; (aarch64|ia64|ppc64|x86_64|s390x|tilegx) use_elf64=yes; AC_MSG_RESULT([64]);; (mips|riscv) use_elfxx=yes; AC_MSG_RESULT([xx]);; *) AC_MSG_ERROR([Unknown ELF target: ${target_arch}]) esac AM_CONDITIONAL(USE_ELF32, [test x$use_elf32 = xyes]) AM_CONDITIONAL(USE_ELF64, [test x$use_elf64 = xyes]) AM_CONDITIONAL(USE_ELFXX, [test x$use_elfxx = xyes]) AC_MSG_CHECKING([whether to include DWARF support]) if test x$target_arch != xia64; then use_dwarf=yes else use_dwarf=no fi AM_CONDITIONAL(USE_DWARF, [test x$use_dwarf = xyes]) AC_MSG_RESULT([$use_dwarf]) AC_MSG_CHECKING([whether to restrict build to remote support]) if test x$target_arch != x$host_arch; then CPPFLAGS="${CPPFLAGS} -DUNW_REMOTE_ONLY" remote_only=yes else remote_only=no fi AC_MSG_RESULT([$remote_only]) AC_MSG_CHECKING([whether to enable debug support]) AC_ARG_ENABLE(debug, AS_HELP_STRING([--enable-debug],[turn on debug support (slows down execution)])) if test x$enable_debug = xyes; then CPPFLAGS="${CPPFLAGS} -DDEBUG" else CPPFLAGS="${CPPFLAGS} -DNDEBUG" fi AC_MSG_RESULT([$enable_debug]) AC_MSG_CHECKING([whether to enable C++ exception support]) AC_ARG_ENABLE(cxx_exceptions, AS_HELP_STRING([--enable-cxx-exceptions],[use libunwind to handle C++ exceptions]),, [ # C++ exception handling doesn't work too well on x86 case $target_arch in x86*) enable_cxx_exceptions=no;; aarch64*) enable_cxx_exceptions=no;; arm*) enable_cxx_exceptions=no;; mips*) enable_cxx_exceptions=no;; tile*) enable_cxx_exceptions=no;; s390x*) enable_cxx_exceptions=no;; *) enable_cxx_exceptions=yes;; esac ]) AM_CONDITIONAL([SUPPORT_CXX_EXCEPTIONS], [test x$enable_cxx_exceptions = xyes]) AC_MSG_RESULT([$enable_cxx_exceptions]) AC_MSG_CHECKING([whether to load .debug_frame sections]) AC_ARG_ENABLE(debug_frame, AS_HELP_STRING([--enable-debug-frame],[Load the ".debug_frame" section if available]),, [ case "${target_arch}" in (arm) enable_debug_frame=yes;; (aarch64) enable_debug_frame=yes;; (*) enable_debug_frame=no;; esac]) if test x$remote_only = xyes; then enable_debug_frame=no fi if test x$enable_debug_frame = xyes; then AC_DEFINE([CONFIG_DEBUG_FRAME], [], [Enable Debug Frame]) fi AC_MSG_RESULT([$enable_debug_frame]) AC_MSG_CHECKING([whether to block signals during mutex ops]) AC_ARG_ENABLE(block_signals, AS_HELP_STRING([--enable-block-signals],[Block signals before performing mutex operations]),, [enable_block_signals=yes]) if test x$enable_block_signals = xyes; then AC_DEFINE([CONFIG_BLOCK_SIGNALS], [], [Block signals before mutex operations]) fi AC_MSG_RESULT([$enable_block_signals]) AC_MSG_CHECKING([whether to validate memory addresses before use]) AC_ARG_ENABLE(conservative_checks, AS_HELP_STRING([--enable-conservative-checks],[Validate all memory addresses before use]),, [enable_conservative_checks=yes]) if test x$enable_conservative_checks = xyes; then AC_DEFINE(CONSERVATIVE_CHECKS, 1, [Define to 1 if you want every memory access validated]) fi AC_MSG_RESULT([$enable_conservative_checks]) AC_MSG_CHECKING([whether to enable msabi support]) AC_ARG_ENABLE(msabi_support, AS_HELP_STRING([--enable-msabi-support],[Enables support for Microsoft ABI extensions])) if test x$enable_msabi_support = xyes; then AC_DEFINE([CONFIG_MSABI_SUPPORT], [], [Support for Microsoft ABI extensions]) fi AC_MSG_RESULT([$enable_msabi_support]) LIBLZMA= AC_MSG_CHECKING([whether to support LZMA-compressed symbol tables]) AC_ARG_ENABLE(minidebuginfo, AS_HELP_STRING([--enable-minidebuginfo], [Enables support for LZMA-compressed symbol tables]),, [enable_minidebuginfo=auto]) AC_MSG_RESULT([$enable_minidebuginfo]) if test x$enable_minidebuginfo != xno; then AC_CHECK_LIB([lzma], [lzma_mf_is_supported], [LIBLZMA=-llzma AC_DEFINE([HAVE_LZMA], [1], [Define if you have liblzma]) enable_minidebuginfo=yes], [if test x$enable_minidebuginfo = xyes; then AC_MSG_FAILURE([liblzma not found]) fi]) fi AC_SUBST([LIBLZMA]) AM_CONDITIONAL(HAVE_LZMA, test x$enable_minidebuginfo = xyes) LIBZ= AC_MSG_CHECKING([whether to support ZLIB-compressed symbol tables]) AC_ARG_ENABLE(zlibdebuginfo, AS_HELP_STRING([--enable-zlibdebuginfo], [Enables support for ZLIB-compressed symbol tables]),, [enable_zlibdebuginfo=auto]) AC_MSG_RESULT([$enable_zlibdebuginfo]) if test x$enable_zlibdebuginfo != xno; then AC_CHECK_LIB([z], [uncompress], [LIBZ=-lz AC_DEFINE([HAVE_ZLIB], [1], [Define if you have libz]) enable_zlibdebuginfo=yes], [if test x$enable_zlibdebuginfo = xyes; then AC_MSG_FAILURE([libz not found]) fi]) fi AC_SUBST([LIBZ]) AM_CONDITIONAL(HAVE_ZLIB, test x$enable_zlibdebuginfo = xyes) AC_MSG_CHECKING([whether to support UNW_CACHE_PER_THREAD]) AC_ARG_ENABLE([per-thread-cache], AS_HELP_STRING([--enable-per-thread-cache], [build with support for UNW_CACHE_PER_THREAD (which imposes a hight TLS memory usage) (default: disabled)])) AC_MSG_RESULT([$enable_per_thread_cache]) AS_IF([test x$enable_per_thread_cache = xyes], [ AC_DEFINE(HAVE___CACHE_PER_THREAD, 1, [Define to 1 if --enable-per-thread-cache]) ]) AC_MSG_CHECKING([for Intel compiler]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[#ifndef __INTEL_COMPILER #error choke me #endif]])],[intel_compiler=yes],[intel_compiler=no]) if test x$GCC = xyes -a x$intel_compiler != xyes; then CFLAGS="${CFLAGS} -fexceptions -Wall -Wsign-compare" fi AC_MSG_RESULT([$intel_compiler]) AC_MSG_CHECKING([if building on Solaris then define __EXTENSIONS__ macro]) if $OS_SOLARIS; then CFLAGS="${CFLAGS} -D__EXTENSIONS__" AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) fi AC_MSG_CHECKING([for QCC compiler]) AS_CASE([$CC], [qcc*|QCC*], [qcc_compiler=yes], [qcc_compiler=no]) AC_MSG_RESULT([$qcc_compiler]) if test x$intel_compiler = xyes; then AC_MSG_CHECKING([if linker supports -static-libcxa]) save_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS -static-libcxa" AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[have_static_libcxa=yes],[have_static_libcxa=no]) LDFLAGS="$save_LDFLAGS" if test "x$have_static_libcxa" = xyes; then LDFLAGS_STATIC_LIBCXA="-XCClinker -static-libcxa" fi AC_MSG_RESULT([$have_static_libcxa]) fi if test x$qcc_compiler = xyes; then LDFLAGS_NOSTARTFILES="-XCClinker -Wc,-nostartfiles" else LDFLAGS_NOSTARTFILES="-XCClinker -nostartfiles" fi if test x$GCC = xyes -a x$intel_compiler != xyes -a x$qcc_compiler != xyes -a x$android != xyes; then LIBCRTS="-lgcc_s" fi AC_MSG_CHECKING([for __builtin___clear_cache]) AC_LINK_IFELSE( [AC_LANG_PROGRAM([[]], [[__builtin___clear_cache(0, 0)]])], [have__builtin___clear_cache=yes], [have__builtin___clear_cache=no]) if test x$have__builtin___clear_cache = xyes; then AC_DEFINE([HAVE__BUILTIN___CLEAR_CACHE], [1], [Defined if __builtin___clear_cache() is available]) fi AC_MSG_RESULT([$have__builtin___clear_cache]) AC_MSG_CHECKING([for __builtin_unreachable]) AC_LINK_IFELSE( [AC_LANG_PROGRAM([[]], [[__builtin_unreachable()]])], [have__builtin_unreachable=yes], [have__builtin_unreachable=no]) if test x$have__builtin_unreachable = xyes; then AC_DEFINE([HAVE__BUILTIN_UNREACHABLE], [1], [Defined if __builtin_unreachable() is available]) fi AC_MSG_RESULT([$have__builtin_unreachable]) CCASFLAGS="${CCASFLAGS} ${CPPFLAGS}" arch="$target_arch" ARCH=`echo $target_arch | tr [a-z] [A-Z]` dnl create shell variables from the M4 macros: PKG_MAJOR=pkg_major PKG_MINOR=pkg_minor PKG_EXTRA=pkg_extra PKG_MAINTAINER=pkg_maintainer old_LIBS="$LIBS" LIBS="" AC_SEARCH_LIBS(backtrace, execinfo) LIBS="$old_LIBS" case "$ac_cv_search_backtrace" in -l*) BACKTRACELIB=$ac_cv_search_backtrace;; *) BACKTRACELIB="";; esac AC_SUBST(build_arch) AC_SUBST(target_os) AC_SUBST(arch) AC_SUBST(ARCH) AC_SUBST(LDFLAGS_STATIC_LIBCXA) AC_SUBST(LDFLAGS_NOSTARTFILES) AC_SUBST(LIBCRTS) AC_SUBST(PKG_MAJOR) AC_SUBST(PKG_MINOR) AC_SUBST(PKG_EXTRA) AC_SUBST(PKG_MAINTAINER) AC_SUBST(enable_cxx_exceptions) AC_SUBST(enable_debug_frame) AC_SUBST(DLLIB) AC_SUBST(BACKTRACELIB) AC_PATH_PROG([LATEX2MAN],[latex2man]) if test "x$LATEX2MAN" = "x"; then AC_MSG_WARN([latex2man not found. Install latex2man. Disabling docs.]) enable_documentation="no"; fi AM_CONDITIONAL([CONFIG_DOCS], [test x$enable_documentation = xyes]) if test "x$enable_documentation" = "xyes"; then AC_CONFIG_FILES(doc/Makefile doc/common.tex) fi AM_CONDITIONAL([CONFIG_TESTS], [test x$enable_tests = xyes]) if test "x$enable_tests" = "xyes"; then AC_CONFIG_FILES(tests/Makefile tests/check-namespace.sh) fi AM_CONDITIONAL([CONFIG_WEAK_BACKTRACE], [test "x$enable_weak_backtrace" = xyes]) AM_COND_IF([CONFIG_WEAK_BACKTRACE], [ AC_DEFINE([CONFIG_WEAK_BACKTRACE], [1], [Define if the weak 'backtrace' symbol is provided.]) ]) AC_CONFIG_FILES(Makefile src/Makefile include/libunwind-common.h include/libunwind.h include/tdep/libunwind_i.h) AC_CONFIG_FILES(src/unwind/libunwind.pc src/coredump/libunwind-coredump.pc src/ptrace/libunwind-ptrace.pc src/setjmp/libunwind-setjmp.pc src/libunwind-generic.pc) AC_OUTPUT