urbit/pkg/urcrypt/configure.ac
2021-12-30 04:16:37 +00:00

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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
# There are two versions numbers that must be updated on each public release.
# 1. The libtool version (useful to the linker)
# 2. The semantic version (useful to humans)
# Follow these instructions sequentially for the libtool version:
# 1. If the library source code has changed at all since the last update,
# then increment revision (c:r:a becomes c:r+1:a).
# 2. If any interfaces have been added, removed, or changed since the last
# update, increment current, and set revision to 0.
# 3. If any interfaces have been added since the last public release,
# then increment age.
# 4. If any interfaces have been removed or changed since the last public
# release, then set age to 0.
m4_define([urcrypt_lt_current], [0])
m4_define([urcrypt_lt_revision], [0])
m4_define([urcrypt_lt_age], [0])
# The package version uses semantic versioning (semver.org).
# In summary,increment the:
# 1. MAJOR version when you make incompatible API changes,
# 2. MINOR version when you add functionality in a backwards compatible manner, and
# 3. PATCH version when you make backwards compatible bug fixes.
m4_define([urcrypt_sv_major], [0])
m4_define([urcrypt_sv_minor], [1])
m4_define([urcrypt_sv_patch], [0])
# Initialize autoconf
AC_PREREQ([2.69])
AC_INIT([urcrypt], [urcrypt_sv_major.urcrypt_sv_minor.urcrypt_sv_patch])
AC_SUBST([URCRYPT_API_VERSION], [urcrypt_sv_major])
AC_SUBST([URCRYPT_LT_VERSION],
[urcrypt_lt_current:urcrypt_lt_revision:urcrypt_lt_age])
AC_CONFIG_SRCDIR([urcrypt/util.c])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([build-aux/m4])
AC_CANONICAL_HOST
# Initialize automake
AM_INIT_AUTOMAKE([foreign subdir-objects -Wall -Werror])
# Initialize libtool
AM_PROG_AR
LT_INIT
# Initialize pkgconfig
PKG_PROG_PKG_CONFIG
PKG_INSTALLDIR
# Checks for programs
AC_PROG_CC
# Checks for pkg-config capable libraries
PKG_CHECK_MODULES([LIBSECP256K1], [libsecp256k1])
AC_CHECK_HEADER([secp256k1_recovery.h], [],
[AC_MSG_ERROR([libsecp256k1 must have recovery enabled.])])
AC_CHECK_HEADER([secp256k1_schnorrsig.h], [],
[AC_MSG_ERROR([libsecp256k1 must have Schnorr signatures enabled.])])
PKG_CHECK_MODULES([LIBCRYPTO], [libcrypto])
AS_IF([test "$enable_shared" == "yes"],
[# ensure crypto will be shared for shared object (see README.md)
save_LDFLAGS=$LDFLAGS
save_CLAGS=$CFLAGS
LDFLAGS=$LIBCRYPTO_LIBS
CFLAGS=$LIBCRYPTO_CFLAGS
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <openssl/sha.h>],
[[unsigned char sha[32];
SHA256("hello", 5, sha);]])],
[AC_PROG_GREP
AC_CHECK_TOOL([NM], [nm])
AC_MSG_CHECKING([for shared libcrypto])
AS_IF(
[$NM conftest$EXEEXT | $GREP 'U .*SHA256' 2>&1 >/dev/null],
[AC_MSG_RESULT([yes])],
[AC_MSG_ERROR([cannot find shared object for libcrypto.])])],
[AC_MSG_ERROR([unable to link libcrypto.])])
LDFLAGS=$save_LDFLAGS
CFLAGS=$save_CFLAGS])
# Checks for non pkg-config libraries
AC_CHECK_LIB([aes_siv], [AES_SIV_CTX_new],
[AC_SUBST([LIBAES_SIV_LIBS], "-laes_siv")],
[AC_MSG_ERROR([libaes_siv is required.])],
[-lcrypto])
# Checks for header files.
AC_CHECK_HEADERS([limits.h stddef.h stdint.h stdlib.h string.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_CHECK_HEADER_STDBOOL
AC_TYPE_INT32_T
AC_TYPE_INT64_T
AC_TYPE_SIZE_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_UINT8_T
# Checks for library functions.
AC_CHECK_FUNCS([memset])
# Checks for CPU architecture, uses SSE instructions if on X86_64
AS_CASE([$host_cpu],
[x86_64], [ARCH=x86_64
AC_MSG_WARN("Architecture x86_64: Building libargon2 with optimizations")],
[ARCH=generic
AC_MSG_WARN("Architecture $host_cpu is not x86_64: Building libargon2 without optimizations")]
)
AC_SUBST([ARCH])
AM_CONDITIONAL([ARCH_X86_64], [test "$ARCH" = 'x86_64'])
AM_CONDITIONAL([ARCH_GENERIC], [test "$ARCH" = 'generic'])
# Finish and output
AC_CONFIG_FILES([Makefile liburcrypt-$URCRYPT_API_VERSION.pc:liburcrypt.pc.in])
AC_OUTPUT