configure.ac revision 2f132010375c74448c182b160d1a851abd560970 
1# -*- Autoconf -*-
2# Process this file with autoconf to produce a configure script.
3AC_PREREQ(2.65)
4
5AC_INIT([ltrace],[0.6.0],[ltrace-devel@lists.alioth.debian.org])
6AC_CONFIG_HEADERS([config.h])
7AC_CONFIG_SRCDIR(libltrace.c)
8AC_CONFIG_MACRO_DIR([config/m4])
9AC_CONFIG_AUX_DIR([config/autoconf])
10AC_CANONICAL_BUILD
11AC_CANONICAL_HOST
12
13case "${host_os}" in
14    linux-gnu*)	HOST_OS="linux-gnu" ;;
15    *)		AC_MSG_ERROR([unkown host-os ${host_osx}]) ;;
16esac
17AC_SUBST(HOST_OS)
18
19case "${host_cpu}" in
20    arm*|sa110)		HOST_CPU="arm" ;;
21    i?86)		HOST_CPU="i386" ;;
22    powerpc|powerpc64)	HOST_CPU="ppc" ;;
23    sun4u|sparc64)	HOST_CPU="sparc" ;;
24    s390x)		HOST_CPU="s390" ;;
25    *)			HOST_CPU="${host_cpu}" ;;
26esac
27AC_SUBST(HOST_CPU)
28
29# Checks for programs.
30AC_PROG_CC
31LT_INIT
32# libtool-2:  LT_INIT()
33AM_INIT_AUTOMAKE([foreign no-exeext dist-bzip2])
34AM_MAINTAINER_MODE
35
36AC_ARG_WITH([libelf],
37  AS_HELP_STRING([--with-libelf], [Prefix of libelf headers/library]),
38  [case "${withval}" in
39  (no)
40    AC_MSG_ERROR([*** libelf is a required dependency])
41    ;;
42  (yes)
43    AC_MSG_ERROR([*** --with-libelf requires you to specify a path])
44    ;;
45  (*)
46    AM_CPPFLAGS="${AM_CPPFLAGS} -I${withval}/include"
47    AM_LDFLAGS="${AM_LDFLAGS} -L${withval}/lib"
48    libelf_LD_LIBRARY_PATH="${withval}/lib"
49    ;;
50esac],[])
51
52# Checks for libraries.
53
54saved_CPPFLAGS="${CPPFLAGS}"
55saved_LDFLAGS="${LDFLAGS}"
56CPPFLAGS="${CPPFLAGS} ${AM_CPPFLAGS}"
57LDFLAGS="${LDFLAGS} ${AM_LDFLAGS}"
58# libelf
59AC_CHECK_HEADERS([elf.h gelf.h],,
60	[AC_MSG_ERROR([*** libelf.h or gelf.h not found on your system])]
61)
62AC_CHECK_LIB([elf], [elf_begin],,
63	[AC_MSG_ERROR([*** libelf not found on your system])]
64)
65CPPFLAGS="${saved_CPPFLAGS}"
66LDFLAGS="${saved_LDFLAGS}"
67
68
69# HAVE_LIBIBERTY
70AC_CHECK_LIB([iberty], [cplus_demangle], [
71	AC_DEFINE([HAVE_LIBIBERTY], [1], [we have libiberty])
72	liberty_LIBS="-liberty"], [
73	liberty_LIBS=""])
74AC_SUBST(liberty_LIBS)
75
76
77# HAVE_LIBSUPC__
78AC_CHECK_LIB([supc++], [__cxa_demangle], [
79	AC_DEFINE([HAVE_LIBSUPC__], [1], [we have libsupc++])
80	libsupcxx_LIBS="-lsupc++"], [
81	libsupcxx_LIBS=""])
82AC_SUBST(libsupcxx_LIBS)
83
84
85dnl Check security_get_boolean_active availability.
86AC_CHECK_HEADERS(selinux/selinux.h)
87AC_CHECK_LIB(selinux, security_get_boolean_active)
88
89
90# HAVE_LIBUNWIND
91AC_ARG_WITH(libunwind,
92  AS_HELP_STRING([--with-libunwind], [Use libunwind frame unwinding support]),
93  [case "${withval}" in
94  (yes|no) enable_libunwind=$withval;;
95  (*) enable_libunwind=yes
96    AM_CPPFLAGS="${AM_CPPFLAGS} -I${withval}/include"
97    AM_LDFLAGS="${AM_LDFLAGS} -L${withval}/lib"
98    libunwind_LD_LIBRARY_PATH="${withval}/lib"
99    ;;
100esac],[enable_libunwind=maybe])
101
102saved_CPPFLAGS="${CPPFLAGS}"
103CPPFLAGS="${CPPFLAGS} ${AM_CPPFLAGS}"
104AC_CHECK_HEADERS([libunwind.h], [have_libunwind_h=yes])
105AC_CHECK_HEADERS([libunwind-ptrace.h], [have_libunwind_ptrace_h=yes])
106CPPFLAGS="${saved_CPPFLAGS}"
107
108AC_MSG_CHECKING([whether to use libunwind support])
109case "${enable_libunwind}" in
110(yes|maybe)
111  if test x$have_libunwind_h = xyes -o x$have_libunwind_ptrace_h = xyes; then
112    enable_libunwind=yes
113  elif test $enable_libunwind = maybe; then
114    enable_libunwind=no
115  else
116    AC_MSG_RESULT([$enable_libunwind])
117    AC_MSG_ERROR([libunwind.h or libunwind-ptrace.h cannot be found])	
118  fi
119  ;;
120(*) ;;
121esac
122AC_MSG_RESULT([$enable_libunwind])
123
124if test x"$enable_libunwind" = xyes; then
125  saved_LDFLAGS="${LDFLAGS}"
126  LDFLAGS="${LDFLAGS} ${AM_LDFLAGS}"
127  AC_CHECK_LIB(unwind, backtrace, libunwind_LIBS=-lunwind, libunwind_LIBS=)
128  AC_SUBST(libunwind_LIBS)
129  AC_CHECK_LIB(unwind-ptrace, _UPT_create, libunwind_ptrace_LIBS=-lunwind-ptrace, libunwind_ptrace_LIBS=)
130  AC_SUBST(libunwind_ptrace_LIBS)
131
132  case "${host_cpu}" in
133      arm*|sa110)         UNWIND_ARCH="arm" ;;
134      i?86)               UNWIND_ARCH="x86" ;;
135      powerpc)            UNWIND_ARCH="ppc32" ;;
136      ppc64)              UNWIND_ARCH="ppc64" ;;
137      mips*)              UNWIND_ARCH="mips" ;;
138      *)                  UNWIND_ARCH="${host_cpu}" ;;
139  esac
140
141  AC_CHECK_LIB(unwind-${UNWIND_ARCH}, _U${UNWIND_ARCH}_init_remote, libunwind_arch_LIBS=-lunwind-${UNWIND_ARCH}, libunwind_arch_LIBS=)
142  AC_SUBST(libunwind_arch_LIBS)
143  AC_DEFINE([HAVE_LIBUNWIND], [1], [we have libunwind])
144  LDFLAGS="${saved_LDFLAGS}"
145fi
146
147
148saved_CPPFLAGS="${CPPFLAGS}"
149saved_LDFLAGS="${LDFLAGS}"
150CPPFLAGS="${CPPFLAGS} ${AM_CPPFLAGS}"
151LDFLAGS="${LDFLAGS} ${AM_LDFLAGS}"
152# HAVE_ELF_C_READ_MMAP
153AC_MSG_CHECKING([whether elf_begin accepts ELF_C_READ_MMAP])
154AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <gelf.h>]], [[
155int main () {
156	Elf *elf = elf_begin(4, ELF_C_READ_MMAP, 0);
157	return 0;
158}
159	]])],[
160	AC_DEFINE([HAVE_ELF_C_READ_MMAP], [1], [we have read mmap support])
161	AC_MSG_RESULT([yes])],[
162	AC_MSG_RESULT([no])])
163
164saved_CFLAGS="${CFLAGS}"
165CFLAGS="${CFLAGS} -Wall -Werror"
166AC_MSG_CHECKING([whether elf_hash takes a char* argument])
167AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <libelf.h>]], [[
168	(void) elf_hash("name");
169	]])],
170	[AC_DEFINE([ELF_HASH_TAKES_CHARP], [1],
171		[elf_hash() takes char* (as opposed to unsigned char *)])
172	 AC_MSG_RESULT([yes])],
173	[AC_MSG_RESULT([no])])
174CFLAGS="${saved_CFLAGS}"
175CPPFLAGS="${saved_CPPFLAGS}"
176LDFLAGS="${saved_LDFLAGS}"
177
178AM_CPPFLAGS=" \
179	${AM_CPPFLAGS} \
180	-I\$(top_srcdir)/sysdeps/${HOST_OS}/${HOST_CPU} \
181	-I\$(top_srcdir)/sysdeps/${HOST_OS} \
182	-I\$(top_srcdir)/sysdeps \
183	-I\$(top_srcdir) \
184"
185
186# Checks for header files.
187AC_CHECK_HEADERS([ \
188	fcntl.h \
189	limits.h \
190	stddef.h \
191	stdint.h \
192	stdlib.h \
193	string.h \
194	sys/ioctl.h \
195	sys/param.h \
196	sys/time.h \
197	unistd.h \
198])
199
200# Checks for typedefs, structures, and compiler characteristics.
201AC_TYPE_UID_T
202AC_C_INLINE
203AC_TYPE_PID_T
204AC_TYPE_SIZE_T
205AC_CHECK_SIZEOF([long])
206
207
208# Checks for library functions.
209AC_FUNC_ERROR_AT_LINE
210AC_FUNC_FORK
211AC_CHECK_FUNCS([ \
212	alarm \
213	atexit \
214	getcwd \
215	gettimeofday \
216	memset \
217	mkdir \
218	rmdir \
219	strchr \
220	strdup \
221	strerror \
222	strtol \
223	strtoul \
224])
225
226
227#
228# Debugging
229#
230AC_MSG_CHECKING([whether to enable debugging])
231AC_ARG_ENABLE(debug,
232    AS_HELP_STRING([--enable-debug], [enable debugging @<:@default=no@:>@]),
233	[case "$enableval" in
234	y | yes) CONFIG_DEBUG=yes ;;
235        *) CONFIG_DEBUG=no ;;
236    esac],
237    [CONFIG_DEBUG=no])
238AC_MSG_RESULT([${CONFIG_DEBUG}])
239if test "${CONFIG_DEBUG}" = "yes"; then
240    AC_DEFINE(DEBUG, 1, [debugging])
241fi
242
243# Ignore the compiler's warnings at your own risk.
244AM_CFLAGS="${AM_CFLAGS} -Wall -Wsign-compare -Wfloat-equal -Wformat-security"
245AC_ARG_ENABLE([werror],
246    AS_HELP_STRING([--disable-werror], [disable use of -Werror]),
247    [enable_werror=$enableval], [enable_werror=yes])
248if test x$enable_werror = xyes; then
249    AM_CFLAGS="${AM_CFLAGS} -Werror"
250fi
251
252AC_SUBST(AM_CPPFLAGS)
253AC_SUBST(AM_CFLAGS)
254AC_SUBST(AM_LDFLAGS)
255AC_SUBST(libelf_LD_LIBRARY_PATH)
256AC_SUBST(libunwind_LD_LIBRARY_PATH)
257
258AC_CONFIG_FILES([
259	Makefile
260	sysdeps/Makefile
261	sysdeps/linux-gnu/Makefile
262	sysdeps/linux-gnu/alpha/Makefile
263	sysdeps/linux-gnu/arm/Makefile
264	sysdeps/linux-gnu/i386/Makefile
265	sysdeps/linux-gnu/ia64/Makefile
266	sysdeps/linux-gnu/m68k/Makefile
267	sysdeps/linux-gnu/mipsel/Makefile
268	sysdeps/linux-gnu/ppc/Makefile
269	sysdeps/linux-gnu/s390/Makefile
270	sysdeps/linux-gnu/sparc/Makefile
271	sysdeps/linux-gnu/x86_64/Makefile
272	testsuite/Makefile
273	testsuite/ltrace.main/Makefile
274	testsuite/ltrace.minor/Makefile
275	testsuite/ltrace.torture/Makefile
276])
277AC_OUTPUT
278