1 ## Process this file with autoconf to produce configure.
2 ## In general, the safest way to proceed is to run the following:
3 ## % aclocal -I . -I `pwd`/../autoconf && autoheader && autoconf && automake
5 # make sure we're interpreted by some minimal autoconf
8 AC_INIT(glog, 0.1.2, opensource@google.com)
9 # The argument here is just something that should be in the current directory
10 # (for sanity checking)
11 AC_CONFIG_SRCDIR(README)
13 AM_CONFIG_HEADER(src/config.h)
15 # Checks for programs.
19 AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc
22 AC_SUBST(LIBTOOL_DEPS)
24 # Check whether some low-level functions/files are available
27 # These are tested for by AC_HEADER_STDC, but I check again to set the var
28 AC_CHECK_HEADER(stdint.h, ac_cv_have_stdint_h=1, ac_cv_have_stdint_h=0)
29 AC_CHECK_HEADER(sys/types.h, ac_cv_have_systypes_h=1, ac_cv_have_systypes_h=0)
30 AC_CHECK_HEADER(inttypes.h, ac_cv_have_inttypes_h=1, ac_cv_have_inttypes_h=0)
31 AC_CHECK_HEADERS(unistd.h, ac_cv_have_unistd_h=1, ac_cv_have_unistd_h=0)
32 AC_CHECK_HEADERS(syscall.h)
33 AC_CHECK_HEADERS(sys/syscall.h)
34 # For backtrace with glibc.
35 AC_CHECK_HEADERS(execinfo.h)
36 # For backtrace with libunwind.
37 AC_CHECK_HEADERS(libunwind.h)
38 AC_CHECK_HEADERS(ucontext.h)
39 AC_CHECK_HEADERS(sys/utsname.h)
40 AC_CHECK_HEADERS(pwd.h)
41 AC_CHECK_HEADERS(syslog.h)
42 AC_CHECK_HEADERS(sys/time.h)
43 AC_CHECK_HEADERS(glob.h)
45 AC_CHECK_SIZEOF(void *)
47 # These are the types I need. We look for them in either stdint.h,
48 # sys/types.h, or inttypes.h, all of which are part of the default-includes.
49 AC_CHECK_TYPE(uint16_t, ac_cv_have_uint16_t=1, ac_cv_have_uint16_t=0)
50 AC_CHECK_TYPE(u_int16_t, ac_cv_have_u_int16_t=1, ac_cv_have_u_int16_t=0)
51 AC_CHECK_TYPE(__uint16, ac_cv_have___uint16=1, ac_cv_have___uint16=0)
53 AC_CHECK_FUNC(sigaltstack,
54 AC_DEFINE(HAVE_SIGALTSTACK, 1,
55 [Define if you have the `sigaltstack' function]))
57 AC_DEFINE(HAVE_DLADDR, 1,
58 [Define if you have the `dladdr' function]))
60 AC_DEFINE(HAVE_FCNTL, 1,
61 [Define if you have the `fcntl' function]))
64 # We only care about these two attributes.
65 if test x"$ac_cv___attribute__" = x"yes"; then
66 ac_cv___attribute___noreturn="__attribute__ ((noreturn))"
67 ac_cv___attribute___printf_4_5="__attribute__((__format__ (__printf__, 4, 5)))"
69 ac_cv___attribute___noreturn=
70 ac_cv___attribute___printf_4_5=
74 if test x"$ac_cv___builtin_expect" = x"yes"; then
75 ac_cv_have___builtin_expect=1
77 ac_cv_have___builtin_expect=0
80 AX_C___SYNC_VAL_COMPARE_AND_SWAP
82 # On x86_64, instead of libunwind, we can choose to compile with frame-pointers
83 # (This isn't needed on i386, where -fno-omit-frame-pointer is the default).
84 AC_ARG_ENABLE(frame_pointers,
85 AS_HELP_STRING([--enable-frame-pointers],
86 [On x86_64 systems, compile with -fno-omit-frame-pointer (see INSTALL)]),
87 enable_frame_pointers=no)
88 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [return __x86_64__ == 1 ? 0 : 1])],
89 [is_x86_64=yes], [is_x86_64=no])
90 AM_CONDITIONAL(ENABLE_FRAME_POINTERS, test "$enable_frame_pointers" = yes)
91 AM_CONDITIONAL(X86_64, test "$is_x86_64" = yes)
93 # Some of the code in this directory depends on pthreads
95 # To make libglog depend on libpthread on Linux, we need to add
96 # -lpthread in addition to -pthread.
97 AC_CHECK_LIB(pthread, pthread_self)
99 # Check if there is google-gflags library installed.
100 AC_CHECK_LIB(gflags, main, ac_cv_have_libgflags=1, ac_cv_have_libgflags=0)
101 if test x"$ac_cv_have_libgflags" = x"1"; then
103 AC_DEFINE(HAVE_LIB_GFLAGS, 1, [define if you have google gflags library])
108 # Check if there is gtest library installed.
109 AC_CHECK_LIB(gtest, main, ac_cv_have_libgtest=1, ac_cv_have_libgtest=0)
110 if test x"$ac_cv_have_libgtest" = x"1"; then
112 AC_DEFINE(HAVE_LIB_GTEST, 1, [define if you have google gtest library])
114 # Check if there is gmock library installed.
115 AC_CHECK_LIB(gmock, main, ac_cv_have_libgmock=1, ac_cv_have_libgmock=0,
117 if test x"$ac_cv_have_libgmock" = x"1"; then
119 AC_DEFINE(HAVE_LIB_GMOCK, 1, [define if you have google gmock library])
127 # We want to link in libunwind if it exists
129 # Unfortunately, we need to check the header file in addition to the
130 # lib file to check if libunwind is available since libunwind-0.98
131 # doesn't install all necessary header files.
132 if test x"$ac_cv_have_libunwind_h" = x"1"; then
133 AC_CHECK_LIB(unwind, backtrace, UNWIND_LIBS=-lunwind)
135 AC_SUBST(UNWIND_LIBS)
136 if test x"$UNWIND_LIBS" != x""; then
137 AC_DEFINE(HAVE_LIB_UNWIND, 1, [define if you have libunwind])
140 # We'd like to use read/write locks in several places in the code.
141 # See if our pthreads support extends to that. Note: for linux, it
142 # does as long as you define _XOPEN_SOURCE appropriately.
145 # Find out what namespace 'normal' STL code lives in, and also what namespace
146 # the user wants our classes to be defined in
148 AC_DEFINE_GOOGLE_NAMESPACE(google)
150 AC_CXX_USING_OPERATOR
152 # We want to access the "PC" (Program Counter) register from a struct
153 # ucontext. Every system has its own way of doing that. We try all the
154 # possibilities we know about. Note REG_PC should come first (REG_RIP
155 # is also defined on solaris, but does the wrong thing).
156 AC_MSG_CHECKING([how to access the program counter from a struct ucontext])
157 pc_fields=" uc_mcontext.gregs[[REG_PC]]" # Solaris x86 (32 + 64 bit)
158 pc_fields="$pc_fields uc_mcontext.gregs[[REG_EIP]]" # Linux (i386)
159 pc_fields="$pc_fields uc_mcontext.gregs[[REG_RIP]]" # Linux (x86_64)
160 pc_fields="$pc_fields uc_mcontext.sc_ip" # Linux (ia64)
161 pc_fields="$pc_fields uc_mcontext.uc_regs->gregs[[PT_NIP]]" # Linux (ppc)
162 pc_fields="$pc_fields uc_mcontext.gregs[[R15]]" # Linux (arm old [untested])
163 pc_fields="$pc_fields uc_mcontext.arm_pc" # Linux (arm new [untested])
164 pc_fields="$pc_fields uc_mcontext.mc_eip" # FreeBSD (i386)
165 pc_fields="$pc_fields uc_mcontext.mc_rip" # FreeBSD (x86_64 [untested])
166 pc_fields="$pc_fields uc_mcontext->ss.eip" # OS X (i386, <=10.4)
167 pc_fields="$pc_fields uc_mcontext->__ss.__eip" # OS X (i386, >=10.5)
168 pc_fields="$pc_fields uc_mcontext->ss.rip" # OS X (x86_64)
169 pc_fields="$pc_fields uc_mcontext->__ss.__rip" # OS X (>=10.5 [untested])
170 pc_fields="$pc_fields uc_mcontext->ss.srr0" # OS X (ppc, ppc64 [untested])
171 pc_fields="$pc_fields uc_mcontext->__ss.__srr0" # OS X (>=10.5 [untested])
173 for pc_field in $pc_fields; do
174 if ! $pc_field_found; then
175 AC_TRY_COMPILE([#define _GNU_SOURCE 1
176 #include <ucontext.h>],
177 [ucontext_t u; return u.$pc_field == 0;],
178 AC_DEFINE_UNQUOTED(PC_FROM_UCONTEXT, $pc_field,
179 How to access the PC from a struct ucontext)
180 AC_MSG_RESULT([$pc_field])
184 if ! $pc_field_found; then
185 AC_MSG_WARN(Could not find the PC. Will not output failed addresses...)
188 # These are what's needed by logging.h.in and raw_logging.h.in
189 AC_SUBST(ac_google_start_namespace)
190 AC_SUBST(ac_google_end_namespace)
191 AC_SUBST(ac_google_namespace)
192 AC_SUBST(ac_cv_cxx_using_operator)
193 AC_SUBST(ac_cv___attribute___noreturn)
194 AC_SUBST(ac_cv___attribute___printf_4_5)
195 AC_SUBST(ac_cv_have___builtin_expect)
196 AC_SUBST(ac_cv_have_stdint_h)
197 AC_SUBST(ac_cv_have_systypes_h)
198 AC_SUBST(ac_cv_have_inttypes_h)
199 AC_SUBST(ac_cv_have_unistd_h)
200 AC_SUBST(ac_cv_have_uint16_t)
201 AC_SUBST(ac_cv_have_u_int16_t)
202 AC_SUBST(ac_cv_have___uint16)
203 AC_SUBST(ac_cv_have_libgflags)
204 AC_SUBST(GFLAGS_LIBS)
208 # Write generated configuration file
209 AC_CONFIG_FILES([Makefile src/glog/logging.h src/glog/raw_logging.h src/glog/vlog_is_on.h src/glog/stl_logging.h])