1m4_define([maj_ver], [0])
2m4_define([med_ver], [4])
3m4_define([min_ver], [1])
4m4_define([so_version], [1:0:0])
5m4_define([ucl_version], [maj_ver.med_ver.min_ver])
6
7AC_INIT([libucl],[ucl_version],[https://github.com/vstakhov/libucl],[libucl])
8AC_CONFIG_SRCDIR([configure.ac])
9AM_INIT_AUTOMAKE([1.11 foreign silent-rules -Wall -Wportability no-dist-gzip dist-xz])
10
11UCL_VERSION=ucl_version
12SO_VERSION=so_version
13
14AC_SUBST(UCL_VERSION)
15AC_SUBST(SO_VERSION)
16
17AC_PROG_CC_C99
18AM_PROG_CC_C_O
19AM_PROG_AR
20LT_INIT
21AC_CONFIG_MACRO_DIR([m4])
22AC_CONFIG_HEADERS([config.h])
23
24AC_C_CONST
25AC_TYPE_SIZE_T
26
27AC_CHECK_HEADERS_ONCE([fcntl.h unistd.h])
28AC_TYPE_OFF_T
29AC_FUNC_MMAP
30AC_CHECK_HEADERS_ONCE([fcntl.h])
31AC_CHECK_HEADERS_ONCE([sys/types.h])
32AC_CHECK_HEADERS_ONCE([sys/stat.h])
33AC_CHECK_HEADERS_ONCE([sys/param.h])
34AC_CHECK_HEADERS_ONCE([sys/mman.h])
35AC_CHECK_HEADERS_ONCE([stdlib.h])
36AC_CHECK_HEADERS_ONCE([stddef.h])
37AC_CHECK_HEADERS_ONCE([stdarg.h])
38AC_CHECK_HEADERS_ONCE([stdbool.h])
39AC_CHECK_HEADERS_ONCE([stdint.h])
40AC_CHECK_HEADERS_ONCE([string.h])
41AC_CHECK_HEADERS_ONCE([unistd.h])
42AC_CHECK_HEADERS_ONCE([ctype.h])
43AC_CHECK_HEADERS_ONCE([errno.h])
44AC_CHECK_HEADERS_ONCE([limits.h])
45AC_CHECK_HEADERS_ONCE([libgen.h])
46AC_CHECK_HEADERS_ONCE([stdio.h])
47AC_CHECK_HEADERS_ONCE([float.h])
48AC_CHECK_HEADERS_ONCE([math.h])
49
50dnl Example of default-disabled feature
51AC_ARG_ENABLE([urls], AS_HELP_STRING([--enable-urls], 
52	[Enable URLs fetch (requires libfetch or libcurl) @<:@default=no@:>@]), [],
53	[enable_urls=no])
54AC_ARG_ENABLE([regex], AS_HELP_STRING([--enable-regex], 
55	[Enable regex checking for schema @<:@default=yes@:>@]), [],
56	[enable_regex=yes])
57AC_ARG_ENABLE([signatures], AS_HELP_STRING([--enable-signatures],
58	[Enable signatures check (requires openssl) @<:@default=no@:>@]), [],
59	[enable_signatures=no])
60AC_ARG_ENABLE([utils],
61	AS_HELP_STRING([--enable-utils], [Build and install utils @<:@default=no@:>@]),
62	[case "${enableval}" in
63  		yes) utils=true ;;
64  		no)  utils=false ;;
65  		*) AC_MSG_ERROR([bad value ${enableval} for --enable-utils]) ;;
66	esac],[utils=false])
67AM_CONDITIONAL([UTILS], [test x$utils = xtrue])
68
69AS_IF([test "x$enable_signatures" = "xyes"], [
70	AC_SEARCH_LIBS([EVP_MD_CTX_create], [crypto], [
71		AC_DEFINE(HAVE_OPENSSL, 1, [Define to 1 if you have the 'crypto' library (-lcrypto).])
72		LIBCRYPTO_LIB="-lcrypto"
73		LIBS_EXTRA="${LIBS_EXTRA} -lcrypto"
74		], [AC_MSG_ERROR([unable to find the EVP_MD_CTX_create() function])])
75])
76AC_SUBST(LIBCRYPTO_LIB)
77AC_PATH_PROG(PANDOC, pandoc, [/non/existent])
78
79AC_SEARCH_LIBS([clock_gettime], [rt], [], [
80	AC_CHECK_HEADER([mach/mach_time.h], [
81		AC_DEFINE(HAVE_MACH_MACH_TIME_H, 1, [Define to 1 on Darwin])
82	], [AC_MSG_ERROR([unable to find clock_gettime or mach_absolute_time])])
83])
84AC_SEARCH_LIBS([remainder], [m], [], [AC_MSG_ERROR([unable to find remainder() function])])
85
86AS_IF([test "x$enable_regex" = "xyes"], [
87	AC_CHECK_HEADER([regex.h], [
88		AC_DEFINE(HAVE_REGEX_H, 1, [Define to 1 if you have the <regex.h> header file.])
89		AC_SEARCH_LIBS([regexec], [regex], [
90			AS_IF([test "x$ac_cv_search_regexec" = "x-lregex"], [
91				LIBREGEX_LIB="-lregex"
92				LIBS_EXTRA="${LIBS_EXTRA} -lregex"
93				]
94			)], 
95			[AC_MSG_ERROR([unable to find the regexec() function])])],
96			[AC_MSG_ERROR([unable to find the regex.h header])
97		],
98		[#include <sys/types.h>])
99])
100AC_SUBST(LIBREGEX_LIB)
101
102AS_IF([test "x$enable_urls" = "xyes"], [
103	AC_CHECK_HEADER([fetch.h], [
104		AC_DEFINE(HAVE_FETCH_H, 1, [Define to 1 if you have the <fetch.h> header file.])
105		AC_CHECK_LIB(fetch, fetchXGet, [
106			AC_DEFINE(HAVE_LIBFETCH, 1, [Define to 1 if you have the 'fetch' library (-lfetch).])
107			LIBFETCH_LIBS="-lfetch"
108			have_libfetch="yes"
109			LIBS_EXTRA="${LIBS_EXTRA} -lfetch"
110		])
111	], [],[
112	#include <stdio.h>
113	#ifdef HAVE_SYS_PARAM_H
114	#include <sys/param.h>
115	#endif
116	])
117	AC_SUBST(LIBFETCH_LIBS)
118
119	AS_IF([ test "x$have_libfetch" != "xyes"], [
120		dnl Fallback to libcurl
121		PKG_CHECK_MODULES([CURL], [libcurl], [
122			AC_DEFINE(CURL_FOUND, 1, [Use libcurl])
123			LIBS_EXTRA="${LIBS_EXTRA} -lcurl"],
124		[AC_MSG_ERROR([unable to find neither libfetch nor libcurl])])
125	])
126	AC_SUBST(CURL_FOUND)
127	AC_SUBST(CURL_LIBS)
128	AC_SUBST(CURL_CFLAGS)
129])
130
131AC_SUBST(LIBS_EXTRA)
132
133AC_MSG_CHECKING(for GCC atomic builtins)
134AC_LINK_IFELSE([
135	AC_LANG_SOURCE([[
136		int main() {
137			volatile unsigned long val = 1;
138			__sync_synchronize();
139			__sync_val_compare_and_swap(&val, 1, 0);
140			__sync_add_and_fetch(&val, 1);
141			__sync_sub_and_fetch(&val, 1);
142			return 0;
143		}
144	]])
145],
146[
147	AC_MSG_RESULT([yes])
148	AC_DEFINE([HAVE_ATOMIC_BUILTINS], [1], [Has gcc/MSVC atomic intrinsics])
149],
150[
151	AC_MSG_RESULT([no])
152	AC_DEFINE([HAVE_ATOMIC_BUILTINS], [0], [Has gcc/MSVC atomic intrinsics])
153	AC_MSG_WARN([Libucl references could be thread-unsafe because atomic builtins are missing])
154])
155
156AC_CONFIG_FILES(Makefile \
157	src/Makefile \
158	tests/Makefile \
159	utils/Makefile \
160	doc/Makefile \
161	libucl.pc)
162AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h])
163AC_OUTPUT
164