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