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bip/configure.ac

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AC_PREREQ([2.64])
AC_INIT([bip], [0.8.2], [nohar@t1r.net])
AM_INIT_AUTOMAKE([subdir-objects])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
AC_CONFIG_SRCDIR([src/bip.h])
AC_CONFIG_HEADERS([src/config.h])
# Checks for programs
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_INSTALL
AM_PROG_LEX
AC_PROG_YACC
# Checks for header files.
AC_FUNC_ALLOCA
AC_CHECK_HEADERS([arpa/inet.h fcntl.h inttypes.h libintl.h limits.h malloc.h netdb.h netinet/in.h stddef.h stdint.h stdlib.h string.h sys/socket.h sys/time.h termios.h unistd.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_C_INLINE
AC_TYPE_INT16_T
AC_TYPE_INT32_T
AC_TYPE_INT8_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT8_T
# Checks for library functions.
AC_FUNC_FORK
AC_FUNC_MALLOC
AC_FUNC_MKTIME
AC_FUNC_REALLOC
AC_CHECK_FUNCS([ftruncate gethostname gettimeofday localtime_r memmove memset mkdir select socket strcasecmp strchr strcspn strdup strerror strrchr strstr])
# Deal with parameters
AC_ARG_ENABLE([debug], AS_HELP_STRING([--enable-debug], [Enable debug build]))
AC_ARG_WITH([openssl], AS_HELP_STRING([--without-openssl], [Disable SSL using OpenSSL]))
AC_ARG_ENABLE([oidentd], AS_HELP_STRING([--enable-oidentd], [Enable oidentd support (bip overwrites ~/.oidentd.conf with this on!)]))
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AC_ARG_ENABLE([pie], AS_HELP_STRING([--disable-pie], [Do not build a position independent executable]))
AM_CONDITIONAL(DEBUG, test x$enable_debug = xyes)
AS_IF([test "x$enable_debug" = "xyes"], [
CFLAGS="-O0 -g -W -Wall"
LDFLAGS="-g"
AC_CHECK_FUNC(backtrace_symbols_fd, [
AC_DEFINE(HAVE_BACKTRACE, [], [Use glibc backtrace on fatal()])
LDFLAGS="-rdynamic $LDFLAGS"
backtrace="(with backtrace)"
])
], [
CFLAGS="-O2 -g -W -Wall"
LDFLAGS="-g"
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enable_debug=no
])
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AM_CONDITIONAL(OIDENTD, test x$enable_identd = xyes)
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AS_IF([test "x$enable_oidentd" = "xyes"], [
AC_DEFINE([HAVE_OIDENTD], [], [Have bip edit ~/.oidentd.conf])
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], [
enable_oidentd=no
])
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AS_IF([test "x$with_openssl" != "xno"], [
AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [
AC_MSG_ERROR([library 'crypto' is required for OpenSSL support])
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with_openssl=no
], -lcrypto)
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AC_CHECK_LIB(ssl, SSL_read, [], [
AC_MSG_ERROR([library 'ssl' is required for OpenSSL support])
with_openssl=no
], -lssl)
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], [
with_openssl=no
])
AS_IF([test "x$enable_pie" != "xno"], [
AC_CACHE_CHECK([whether $CC accepts PIE flags], [ap_cv_cc_pie], [
save_CFLAGS=$CFLAGS
save_LDFLAGS=$LDFLAGS
CFLAGS="$CFLAGS -fPIE"
LDFLAGS="$LDFLAGS -pie"
AC_TRY_RUN([static int foo[30000]; int main () { return 0; }],
[ap_cv_cc_pie=yes],
[ap_cv_cc_pie=no],
[ap_cv_cc_pie=yes]
)
CFLAGS=$save_CFLAGS
LDFLAGS=$save_LDFLAGS
])
if test "$ap_cv_cc_pie" = "yes"; then
CFLAGS="$CFLAGS -fPIE"
LDFLAGS="$LDFLAGS -pie"
enable_pie=yes
fi
])
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
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AS_IF([test "x$with_openssl" != "xno"], [
echo OPENSSL: yes
])
echo DEBUG: $enable_debug $backtrace
echo OIDENTD: $enable_oidentd
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echo PIE: $enable_pie