AC_PREREQ(2.52) # Process this file with autoconf to produce a configure script. AC_INIT([json-c], 0.12.99, [json-c@googlegroups.com]) AM_INIT_AUTOMAKE AC_PROG_MAKE_SET AC_ARG_ENABLE(rdrand, AS_HELP_STRING([--enable-rdrand], [Enable RDRAND Hardware RNG Hash Seed generation on supported x86/x64 platforms.]), [if test x$enableval = xyes; then enable_rdrand=yes AC_DEFINE(ENABLE_RDRAND, 1, [Enable RDRANR Hardware RNG Hash Seed]) fi]) if test "x$enable_rdrand" = "xyes"; then AC_MSG_RESULT([RDRAND Hardware RNG Hash Seed enabled on supported x86/x64 platforms]) else AC_MSG_RESULT([RDRAND Hardware RNG Hash Seed disabled. Use --enable-rdrand to enable]) fi # Checks for programs. # Checks for libraries. # Checks for header files. AM_PROG_CC_C_O AC_CONFIG_HEADER(config.h) AC_CONFIG_HEADER(json_config.h) AC_HEADER_STDC AC_CHECK_HEADERS(fcntl.h limits.h strings.h syslog.h unistd.h [sys/cdefs.h] [sys/param.h] stdarg.h locale.h endian.h) AC_CHECK_HEADER(inttypes.h,[AC_DEFINE([JSON_C_HAVE_INTTYPES_H],[1],[Public define for json_inttypes.h])]) # Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_TYPE_SIZE_T # Checks for library functions. AC_FUNC_VPRINTF AC_FUNC_MEMCMP AC_FUNC_MALLOC AC_FUNC_REALLOC AC_CHECK_FUNCS(strcasecmp strdup strerror snprintf vsnprintf vasprintf open vsyslog strncasecmp setlocale) AC_CHECK_DECLS([INFINITY], [], [], [[#include ]]) AC_CHECK_DECLS([nan], [], [], [[#include ]]) AC_CHECK_DECLS([isnan], [], [], [[#include ]]) AC_CHECK_DECLS([isinf], [], [], [[#include ]]) AC_CHECK_DECLS([_isnan], [], [], [[#include ]]) AC_CHECK_DECLS([_finite], [], [], [[#include ]]) #check if .section.gnu.warning accepts long strings (for __warn_references) AC_LANG_PUSH([C]) AC_MSG_CHECKING([if .gnu.warning accepts long strings]) AC_LINK_IFELSE([AC_LANG_SOURCE([[ extern void json_object_get(); __asm__(".section .gnu.json_object_get,\n\t.ascii \"Please link against libjson-c instead of libjson\"\n\t.text"); int main(int c,char* v) {return 0;} ]])], [ AC_DEFINE(HAS_GNU_WARNING_LONG, 1, [Define if .gnu.warning accepts long strings.]) AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) ]) AC_LANG_POP([C]) AM_PROG_LIBTOOL # Check for the -Bsymbolic-functions linker flag AC_ARG_ENABLE([Bsymbolic], [AS_HELP_STRING([--disable-Bsymbolic], [Avoid linking with -Bsymbolic-function])], [], [enable_Bsymbolic=check]) AS_IF([test "x$enable_Bsymbolic" = "xcheck"], [ saved_LDFLAGS="${LDFLAGS}" AC_MSG_CHECKING([for -Bsymbolic-functions linker flag]) LDFLAGS=-Wl,-Bsymbolic-functions AC_TRY_LINK([], [int main (void) { return 0; }], [ AC_MSG_RESULT([yes]) enable_Bsymbolic=yes ], [ AC_MSG_RESULT([no]) enable_Bsymbolic=no ]) LDFLAGS="${saved_LDFLAGS}" ]) AS_IF([test "x$enable_Bsymbolic" = "xyes"], [JSON_BSYMBOLIC_LDFLAGS=-Wl[,]-Bsymbolic-functions]) AC_SUBST(JSON_BSYMBOLIC_LDFLAGS) AC_CONFIG_FILES([ Makefile json-c.pc tests/Makefile json-c-uninstalled.pc ]) AC_OUTPUT