###Copyright (C) 2018 Vincent Torri <vincent dot torri at gmail dot com>
###This code is public domain and can be freely used or copied.
dnl defines the version name of the libdwarf.so
m4_define([v_maj], [0])
m4_define([v_min], [11])
m4_define([v_mic], [1])
m4_define([v_ver], [v_maj.v_min.v_mic])
m4_define([v_rel], [])
m4_define([lt_cur], [m4_eval(v_maj + v_min)])
m4_define([lt_rev], [v_mic])
m4_define([lt_age], [v_min])
### Sets the release name.
###m4_define([v_date], [m4_esyscmd_s([date "+%Y%m%d"])])
###Also SET (VERSION ..) in CMakeLists.txt
AC_PREREQ([2.52])
### 2nd arg to AC_INIT is the version 'number'.
AC_INIT([libdwarf], [v_ver], [libdwarf -at- linuxmail -dot- org])
AC_CONFIG_SRCDIR([configure.ac])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIRS([m4])
### The following for libdwarf.pc.in
AC_SUBST([PROJECT_VERSION],[v_ver])
### not yet, will be used before long.
###AM_PATH_PYTHON([3.0])
### Additional options to configure
AC_ARG_ENABLE([dwarfgen],
[AS_HELP_STRING([--enable-dwarfgen],
[enable dwarfgen compilation @<:@default=no@:>@])],
[
AS_IF(
[test "x${enableval}" = "xyes"],
[enable_dwarfgen="yes" ],
[enable_dwarfgen="no"])
],
[enable_dwarfgen="no"])
AM_CONDITIONAL([HAVE_DWARFGEN], [test "x${enable_dwarfgen}" = "xyes"])
AC_ARG_ENABLE([dwarfexample],
[AS_HELP_STRING([--enable-dwarfexample],
[enable dwarfexample compilation @<:@default=no@:>@])],
[
AS_IF(
[test "x${enableval}" = "xyes"],
[enable_dwarfexample="yes"],
[enable_dwarfexample="no"])
],
[enable_dwarfexample="no"])
AM_CONDITIONAL([HAVE_DWARFEXAMPLE], [test "x${enable_dwarfexample}" = "xyes"])
AC_ARG_ENABLE([sanitize],
[AS_HELP_STRING([--enable-sanitize],
[enable sanitize compiler option @<:@default=no@:>@])],
[
AS_IF(
[test "x${enableval}" = "xyes"],
[enable_sanitize="yes"],
[enable_sanitize="no"])
],
[enable_sanitize="no"])
AC_ARG_ENABLE([decompression],
[AS_HELP_STRING([--enable-decompression],
[enable decompressing sections @<:@default=yes@:>@])],
[
AS_IF(
[test "x${enableval}" = "xno"],
[enable_decompression="no"],
[enable_decompression="yes"])
],
[enable_decompression="yes"])
AC_ARG_ENABLE([wall],
[AS_HELP_STRING([--enable-wall],
[enable -Wall and other options @<:@default=no@:>@])],
[
AS_IF(
[test "x${enableval}" = "xyes"],
[enable_wall="yes"],
[enable_wall="no"])
],
[enable_wall="no"])
AC_ARG_ENABLE([doc],
[AS_HELP_STRING([--enable-doc],
[build and install Doxygen documentation @<:@default=no@:>@])],
[
AS_IF(
[test "x${enableval}" = "xyes"],
[enable_doc="yes"],
[enable_doc="no"])
],
[enable_doc="no"])
### Default options with respect to host
AC_CANONICAL_HOST
have_win32="no"
case "$host_os" in
mingw*)
have_win32="yes"
;;
esac
### supress debuglink tests if windows.
AM_CONDITIONAL([HAVE_DEBUGLINK], [test "x${have_win32}" = "xno"])
### Checks for programs
AM_PROG_AR
### We don't use dist-xz *.xz output from make dist,
### so don't mention it.
AM_INIT_AUTOMAKE([1.6 dist-xz subdir-objects])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AS_IF(
[test "x${have_win32}" = "xyes"],
[lt_cv_deplibs_check_method=pass_all])
LT_INIT([win32-dll disable-shared static])
AS_IF(
[test "x${have_win32}" = "xyes" && test "x${enable_static}" = "xyes"],
[AC_MSG_ERROR([Static library is not supported on Windows])])
version_info="lt_cur:lt_rev:lt_age"
release_info="v_rel"
AC_SUBST([version_info])
AC_SUBST([release_info])
VMAJ=v_maj
AC_SUBST([VMAJ])
AC_PROG_CC
AC_PROG_CXX
AC_PROG_CC_C_O
PKG_PROG_PKG_CONFIG
AC_ARG_VAR([DOXYGEN], [Doxygen documentation generation program])
AS_IF(
[test "x${enable_doc}" = "xyes"],
[
AC_CHECK_PROGS([DOXYGEN], [doxygen], [no])
AS_IF(
[test "x${DOXYGEN}" = "xno"],
[enable_doc="no" ],
[enable_doc="yes"])
],
[enable_doc="no"])
AM_CONDITIONAL([HAVE_DOC], [test "x${enable_doc}" = "xyes"])
### Checks for libraries
requirements_libdwarf_pc=
AS_IF(
[test "x${enable_decompression}" = "xyes"],
[
PKG_CHECK_MODULES([ZLIB], [zlib],
[
have_zlib="yes"
have_pc_zlib="yes"
requirements_libdwarf_pc=zlib
],
[
have_zlib="no"
have_pc_zlib="no"
])
PKG_CHECK_MODULES([ZSTD], [libzstd],
[
have_zstd="yes"
have_pc_zstd="yes"
requirements_libdwarf_pc="${requirements_libdwarf_pc} libzstd"
],
[
have_zstd="no"
have_pc_zstd="no"
])
],
[
have_zstd="no"
have_pc_zstd="no"
have_zlib="no"
have_pc_zlib="no"
])
AC_SUBST([requirements_libdwarf_pc])
AC_SUBST([DWARFGEN_LIBS])
AC_ARG_VAR([DWARFGEN_LIBS], [extra linker flags when linking dwarfgen])
AC_SUBST([DWARF_LIBS])
AC_ARG_VAR([DWARF_LIBS], [extra linker flags when linking dwarfdump])
### Checks for header files
### MacOS does not have malloc.h
AC_CHECK_HEADERS([unistd.h sys/types.h malloc.h])
### for uintptr_t and open and open argument defines
AC_CHECK_HEADERS([stdint.h inttypes.h stddef.h fcntl.h])
AS_IF(
[test "x${enable_decompression}" = "xyes"],
[
AS_IF(
[test "x${have_zlib}" = "xno"],
[AC_CHECK_HEADERS([zlib.h],
[have_zlib="yes"],
[have_zlib="no"])])
AS_IF(
[test "x${have_zstd}" = "xno"],
[AC_CHECK_HEADERS([zstd.h],
[have_zstd="yes"],
[have_zstd="no"])])
],
[
have_zstd="no"
have_pc_zstd="no"
have_zlib="no"
have_pc_zlib="no"
])
### for use in casts to uint to avoid 32bit warnings.
### Also needed by C++ cstdint
AC_TYPE_UINTPTR_T
AC_TYPE_INTPTR_T
AC_TYPE_UINT32_T dnl Needed for hash calculation
### Now we know uintptr_t is either in stdint.h or
### is defined in config.h by configure.
### Checks for compiler characteristics
AC_C_BIGENDIAN
AC_SUBST([DWARF_BIGENDIAN],[${ac_cv_c_bigendian}])
AC_ARG_VAR([DWARF_BIGENDIAN],
[big endian yes/no needed various places])
# gcc accepts even totally bogus -Wno flags. Other compilers..no
# -Wno-long-long suppresses warnings on 'long long'
# -Wno-pedantic-ms-format (which only exists in mingw)
# suppresses warnings about I64 printf format.
# -Wnostringop_overread is to avoid a build fail with
# some versions of gcc when building with -fsanitize
# (and some other flags). See, in libdwarf/dwarf_init_finish.c
# around line 330.
# one such gcc: Alpine 12.2.1_git20220924-r4) 12.2.1 20220924
# error: 'strcmp' reading 1 or more bytes from a region of
# size 0 [-Werror=stringop-overread]
# !strcmp(postzprefix,targname+DPREFIXLEN)
c_common_flags="-Wall -Wextra -Wpointer-arith -Wmissing-declarations -Wcomment -Wformat -Wpedantic -Wuninitialized -Wshadow -Werror -Wno-long-long"
AS_IF(
[ test "x$enable_wall" = "xyes" ],
[
cxx_compiler_flags="$c_common_flags "
c_compiler_flags="$c_common_flags -Wmissing-prototypes -Wdeclaration-after-statement -Wmissing-parameter-type -Wnested-externs -Wredundant-decls -Wsign-compare"
#-Wnull-dereference causes bogus warnings.
#-Wbad-function-cast removes useful warnings
#-Wnostringop-overread removes useful warnings
#-Wbad-function-cast removes useful warnings
#-Wmissing-parameter-type removes useful warnings
]
)
AS_IF(
[ test "x$have_win32" = "xyes" ],
[
cxx_compiler_flags="$cxx_compiler_flags -Wno-pedantic-ms-format"
c_compiler_flags="$c_compiler_flags -Wno-pedantic-ms-format"
]
)
DWARF_CHECK_CXX_COMPILER_FLAGS([${cxx_compiler_flags}])
DWARF_CHECK_C_COMPILER_FLAGS([${c_compiler_flags}])
# If we can compile then the runtime can do the
# setlocal itself.
# We do not run this since the C compiler needs
# the C locale to compile correctly.
AC_COMPILE_IFELSE(
[ AC_LANG_PROGRAM(
[[
#include <langinfo.h>
#include <locale.h>
#include <string.h>
#include <stdio.h>
]],
[[
char * langinfo = 0;
setlocale(LC_CTYPE, "");
setlocale(LC_NUMERIC, "");
langinfo = nl_langinfo(CODESET);
printf("Lang: %s\n",langinfo);
if (strcmp(langinfo,"UTF-8") && strcmp(langinfo,"UTF8")) {
return 1;
}
]]
)
],
[ have_utf8="yes"
AC_DEFINE(
[HAVE_UTF8], [1],
[Set to 1 as utf8 is fully printable])
],
[ have_utf8="no"
AC_MSG_WARN([utf8 printed uri-style])
]
)
# unused attribute
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
static unsigned int foo(unsigned int x, __attribute__ ((unused)) int y){
unsigned int x2 = x + 1;
return x2;
}
int goo() {
unsigned int y = 0;
y = foo(12, y);
}
]],
[[
]])
],
[
have_unused="yes"
AC_DEFINE(
[HAVE_UNUSED_ATTRIBUTE], [1],
[Set to 1 if __attribute__ ((unused)) is available.])
],
[have_unused="no"])
AC_MSG_CHECKING([whether "unused" attribute is available])
AC_MSG_RESULT([${have_unused}])
# sanitize
AS_IF(
[test "x${enable_sanitize}" = "xyes"],
[
CFLAGS_save=${CFLAGS}
CFLAGS="${CFLAGS} -fsanitize=address -fsanitize=leak -fsanitize=undefined -fno-omit-frame-pointer"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[]], [[]])],
[
enable_sanitize="yes"
DWARF_CFLAGS="$DWARF_CFLAGS -fsanitize=address -fsanitize=leak -fsanitize=undefined -fno-omit-frame-pointer"
LDFLAGS="$LDFLAGS -fsanitize=address -fsanitize=leak -fsanitize=undefined -fno-omit-frame-pointer"
],
[enable_sanitize="no"])
CFLAGS="${CFLAGS_save} ${DWARF_CFLAGS}"
])
AC_MSG_CHECKING([whether sanitize options are used])
AC_MSG_RESULT([${enable_sanitize}])
# -fvisibility
AS_IF(
[test "x${enable_shared}" = "xyes" && test "x${have_win32}" = "xno"],
[
CFLAGS_save=${CFLAGS}
CFLAGS="${CFLAGS} -fvisibility=hidden -fno-omit-frame-pointer"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[]], [[]])],
[
DWARF_CFLAGS="$DWARF_CFLAGS -fvisibility=hidden -fno-omit-frame-pointer"
LDFLAGS="$LDFLAGS -fvisibility=hidden -fno-omit-frame-pointer"
],
[AC_MSG_NOTICE([Option -fvisibility is ignored. Not supported.])])
CFLAGS="${CFLAGS_save} ${DWARF_CFLAGS}"
])
### Checks for linker characteristics
### Checks for library functions
AC_FUNC_ALLOCA
requirements_libdwarf_libs=
AS_IF(
[test "x${enable_decompression}" = "xyes"],
[
AS_IF(
echo "dadebug zlib ${have_pc_zlib} ${have_zlib}"
[test "x${have_pc_zlib}" = "xno" -a "x${have_zlib}" = "xyes"],
[
AC_SEARCH_LIBS(
[uncompress], [z],
[
ZLIB_LIBS="-lz"
requirements_libdwarf_libs="-lz"
echo "dadebug req set lz"
],
[have_zlib="no"])
])
],
[
have_zlib="no"
])
AS_IF(
[test "x${enable_decompression}" = "xyes"],
[
AS_IF(
echo "dadebug zstd ${have_pc_zstd} ${have_zstd}"
[test "x${have_pc_zstd}" = "xno" -a "x${have_zstd}" = "xyes"],
[
AC_SEARCH_LIBS(
[ZSTD_decompress], [zstd],
[
ZSTD_LIBS="-lzstd"
echo "dadebug req set zstd"
requirements_libdwarf_libs="${requirements_libdwarf_libs} -lzstd"
],
[have_zstd="no"])
])
],
[
have_zstd="no"
])
AS_IF(
[test "x${have_zlib}" = "xyes"],
[
AC_DEFINE([HAVE_ZLIB], [1], [Set to 1 if zlib decompression is available.])
AC_DEFINE([HAVE_ZLIB_H], [1], [Set to 1 if zlib.h header file is available.])
])
AS_IF(
[test "x${have_zstd}" = "xyes"],
[
AC_DEFINE([HAVE_ZSTD], [1], [Set to 1 if zstd decompression is available.])
AC_DEFINE([HAVE_ZSTD_H], [1], [Set to 1 if zstd.h header file is available.])
])
AC_SUBST([requirements_libdwarf_libs])
### Checks for system services
AC_CONFIG_FILES([
Makefile
src/lib/libdwarf/Makefile
src/lib/libdwarfp/Makefile
src/bin/dwarfdump/Makefile
src/bin/dwarfgen/Makefile
src/bin/dwarfexample/Makefile
src/bin/gennames/Makefile
src/bin/tag_attr/Makefile
src/bin/tag_tree/Makefile
src/bin/attr_form/Makefile
src/bin/buildopstab/Makefile
src/bin/builduritable/Makefile
test/Makefile
fuzz/Makefile
doc/Makefile
libdwarf.pc
libdwarfp.pc
])
AC_OUTPUT
echo
echo "$PACKAGE $VERSION"
echo
echo "Configuration Options Summary:"
echo
echo " BuildOS..............: ${build_os}"
echo " HostOS...............: ${host_os}"
echo
echo " shared library.......: ${enable_shared}"
echo " static library.......: ${enable_static}"
echo
echo " zlib support.........: ${have_zlib}"
echo " zstd support.........: ${have_zstd}"
echo " sanitize support.....: ${enable_sanitize}"
echo " documentation........: ${enable_doc}"
echo " BuildOS-BigEndian....: ${ac_cv_c_bigendian}"
echo
echo " libdwarf.............: always"
echo " dwarfdump............: always"
echo " dwarfdump print utf-8: ${have_utf8}"
echo " dwarfgen.............: ${enable_dwarfgen}"
echo " dwarfexample.........: ${enable_dwarfexample}"
echo
echo "Compilation............: make (or gmake)"
echo " CPPFLAGS.............: $CPPFLAGS"
echo " CFLAGS...............: $CFLAGS ${c_compiler_flags}"
echo " LDFLAGS..............: $LDFLAGS"
echo " LIBS.................: $LIBS"
echo " ZLIB_LIBS............: $ZLIB_LIBS"
echo " ZSTD_LIBS............: $ZSTD_LIBS"
echo " DWARF_CFLAGS.........: $DWARF_CFLAGS"
echo " DWARF_LIBS...........: $DWARF_LIBS"
echo " DWARFGEN_LIBS........: $DWARFGEN_LIBS"
echo
echo "Installation...........: make install (as root if needed, with 'su' or 'sudo')"
echo " prefix...............: $prefix"
echo