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AC_PREREQ([2.60])
AC_INIT([jansson], [2.14], [https://github.com/akheron/jansson/issues])
AC_CONFIG_AUX_DIR([.])
AM_INIT_AUTOMAKE([1.10 foreign])
AC_CONFIG_SRCDIR([src/value.c])
AC_CONFIG_HEADERS([jansson_private_config.h])
# Checks for programs.
AC_PROG_CC
AC_PROG_CXX
AC_PROG_LIBTOOL
AM_CONDITIONAL([GCC], [test x$GCC = xyes])
# Checks for libraries.
# Checks for header files.
AC_CHECK_HEADERS([endian.h fcntl.h locale.h sched.h unistd.h sys/param.h sys/stat.h sys/time.h sys/types.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_INT32_T
AC_TYPE_UINT32_T
AC_TYPE_UINT16_T
AC_TYPE_UINT8_T
AC_TYPE_LONG_LONG_INT
AC_C_BIGENDIAN
AC_C_INLINE
case $ac_cv_c_inline in
yes) json_inline=inline;;
no) json_inline=;;
*) json_inline=$ac_cv_c_inline;;
esac
AC_SUBST([json_inline])
# Checks for library functions.
AC_CHECK_FUNCS([close getpid gettimeofday open read setlocale sched_yield strtoll])
AC_MSG_CHECKING([for gcc __sync builtins])
have_sync_builtins=no
AC_TRY_LINK(
[], [unsigned long val; __sync_bool_compare_and_swap(&val, 0, 1); __sync_add_and_fetch(&val, 1); __sync_sub_and_fetch(&val, 1);],
[have_sync_builtins=yes],
)
if test "x$have_sync_builtins" = "xyes"; then
AC_DEFINE([HAVE_SYNC_BUILTINS], [1],
[Define to 1 if gcc's __sync builtins are available])
json_have_sync_builtins=1
else
json_have_sync_builtins=0
fi
AC_SUBST([json_have_sync_builtins])
AC_MSG_RESULT([$have_sync_builtins])
AC_MSG_CHECKING([for gcc __atomic builtins])
have_atomic_builtins=no
AC_TRY_LINK(
[], [char l; unsigned long v; __atomic_test_and_set(&l, __ATOMIC_RELAXED); __atomic_store_n(&v, 1, __ATOMIC_RELEASE); __atomic_load_n(&v, __ATOMIC_ACQUIRE); __atomic_add_fetch(&v, 1, __ATOMIC_ACQUIRE); __atomic_sub_fetch(&v, 1, __ATOMIC_RELEASE);],
[have_atomic_builtins=yes],
)
if test "x$have_atomic_builtins" = "xyes"; then
AC_DEFINE([HAVE_ATOMIC_BUILTINS], [1],
[Define to 1 if gcc's __atomic builtins are available])
json_have_atomic_builtins=1
else
json_have_atomic_builtins=0
fi
AC_SUBST([json_have_atomic_builtins])
AC_MSG_RESULT([$have_atomic_builtins])
case "$ac_cv_type_long_long_int$ac_cv_func_strtoll" in
yesyes) json_have_long_long=1;;
*) json_have_long_long=0;;
esac
AC_SUBST([json_have_long_long])
# Features
AC_ARG_ENABLE([urandom],
[AS_HELP_STRING([--disable-urandom],
[Don't use /dev/urandom to seed the hash function])],
[use_urandom=$enableval], [use_urandom=yes])
if test "x$use_urandom" = xyes; then
AC_DEFINE([USE_URANDOM], [1],
[Define to 1 if /dev/urandom should be used for seeding the hash function])
fi
AC_ARG_ENABLE([windows-cryptoapi],
[AS_HELP_STRING([--disable-windows-cryptoapi],
[Don't use CryptGenRandom to seed the hash function])],
[use_windows_cryptoapi=$enableval], [use_windows_cryptoapi=yes])
if test "x$use_windows_cryptoapi" = xyes; then
AC_DEFINE([USE_WINDOWS_CRYPTOAPI], [1],
[Define to 1 if CryptGenRandom should be used for seeding the hash function])
fi
AC_ARG_ENABLE([initial-hashtable-order],
[AS_HELP_STRING([--enable-initial-hashtable-order=VAL],
[Number of buckets new object hashtables contain is 2 raised to this power. The default is 3, so empty hashtables contain 2^3 = 8 buckets.])],
[initial_hashtable_order=$enableval], [initial_hashtable_order=3])
AC_DEFINE_UNQUOTED([INITIAL_HASHTABLE_ORDER], [$initial_hashtable_order],
[Number of buckets new object hashtables contain is 2 raised to this power. E.g. 3 -> 2^3 = 8.])
AC_ARG_ENABLE([Bsymbolic],
[AS_HELP_STRING([--disable-Bsymbolic],
[Avoid linking with -Bsymbolic-function])],
[], [with_Bsymbolic=check])
if test "x$with_Bsymbolic" != "xno" ; then
AC_MSG_CHECKING([for -Bsymbolic-functions linker flag])
saved_LDFLAGS="${LDFLAGS}"
LDFLAGS=-Wl,-Bsymbolic-functions
AC_TRY_LINK(
[], [int main (void) { return 0; }],
[AC_MSG_RESULT([yes])
have_Bsymbolic=yes],
[AC_MSG_RESULT([no])
have_Bsymbolic=no]
)
LDFLAGS="${saved_LDFLAGS}"
if test "x$with_Bsymbolic" = "xcheck" ; then
with_Bsymbolic=$have_Bsymbolic;
fi
if test "x$with_Bsymbolic:x$have_Bsymbolic" = "xyes:xno" ; then
AC_MSG_ERROR([linker support is required for -Bsymbolic])
fi
fi
AS_IF([test "x$with_Bsymbolic" = "xyes"], [JSON_BSYMBOLIC_LDFLAGS=-Wl[,]-Bsymbolic-functions])
AC_SUBST(JSON_BSYMBOLIC_LDFLAGS)
# Enable symbol versioning on GNU libc
JSON_SYMVER_LDFLAGS=
AC_CHECK_DECL([__GLIBC__], [JSON_SYMVER_LDFLAGS=-Wl,--default-symver])
AC_SUBST([JSON_SYMVER_LDFLAGS])
AC_ARG_ENABLE([dtoa],
[AS_HELP_STRING([--enable-dtoa], [Use dtoa for optimal floating point to string conversion])],
[case "$enableval" in
yes) dtoa=yes ;;
no) dtoa=no ;;
*) AC_MSG_ERROR([bad value ${enableval} for --enable-dtoa]) ;;
esac], [dtoa=yes])
if test "$dtoa" = "yes"; then
AC_DEFINE([DTOA_ENABLED], [1],
[Define to 1 to use dtoa to convert floating points to strings])
fi
AM_CONDITIONAL([DTOA_ENABLED], [test "$dtoa" = "yes"])
AC_ARG_ENABLE([ossfuzzers],
[AS_HELP_STRING([--enable-ossfuzzers],
[Whether to generate the fuzzers for OSS-Fuzz])],
[have_ossfuzzers=yes], [have_ossfuzzers=no])
AM_CONDITIONAL([USE_OSSFUZZERS], [test "x$have_ossfuzzers" = "xyes"])
AC_SUBST([LIB_FUZZING_ENGINE])
AM_CONDITIONAL([USE_OSSFUZZ_FLAG], [test "x$LIB_FUZZING_ENGINE" = "x-fsanitize=fuzzer"])
AM_CONDITIONAL([USE_OSSFUZZ_STATIC], [test -f "$LIB_FUZZING_ENGINE"])
if test x$GCC = xyes; then
AC_MSG_CHECKING(for -Wno-format-truncation)
wnoformat_truncation="-Wno-format-truncation"
AS_IF([${CC} -Wno-format-truncation -Werror -S -o /dev/null -xc /dev/null > /dev/null 2>&1],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
wnoformat_truncation=""])
AM_CFLAGS="-Wall -Wextra -Wdeclaration-after-statement -Wshadow ${wnoformat_truncation}"
fi
AC_SUBST([AM_CFLAGS])
AC_CONFIG_FILES([
jansson.pc
Makefile
doc/Makefile
src/Makefile
src/jansson_config.h
test/Makefile
test/bin/Makefile
test/ossfuzz/Makefile
test/suites/Makefile
test/suites/api/Makefile
])
AC_OUTPUT
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