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dnl -*- mode: shell-script; sh-indentation: 2; -*-
dnl Process this file with autoconf to produce a configure script.
AC_INIT([nettle], [1.15], [nettle-bugs@lists.lysator.liu.se])
AC_PREREQ(2.50)
AC_CONFIG_SRCDIR([arcfour.c])
# Needed to stop autoconf from looking for files in parent directories.
AC_CONFIG_AUX_DIR([.])
AC_CONFIG_HEADER([config.h])
SHLIBMAJOR=2
SHLIBMINOR=6
AC_CANONICAL_HOST
# Command line options
AC_ARG_WITH(include-path,
AC_HELP_STRING([--with-include-path], [A colon-separated list of directories to search for include files]),,
[with_include_path=''])
if test x$with_include_path != x ; then
CPPFLAGS="$CPPFLAGS -I`echo $with_include_path | sed 's/:/ -I/g'`"
fi
AC_ARG_WITH(lib-path,
AC_HELP_STRING([--with-lib-path], [A colon-separated list of directories to search for libraries]),,
[with_lib_path=''])
if test x$with_lib_path != x ; then
LDFLAGS="$LDFLAGS -L`echo $with_lib_path | sed 's/:/ -L/g'`"
fi
AC_ARG_ENABLE(public-key,
AC_HELP_STRING([--disable-public-key], [Disable public key algorithms]),,
[enable_public_key=yes])
AC_ARG_ENABLE(assembler,
AC_HELP_STRING([--disable-assembler],[Disable assembler code]),,
[enable_assembler=yes])
AC_ARG_ENABLE(shared,
AC_HELP_STRING([--enable-shared], [Build a shared library]),,
[enable_shared=no])
AC_ARG_ENABLE(pic,
AC_HELP_STRING([--disable-pic],
[Do not try to compile library files as position independent code]),,
[enable_pic=yes])
AC_ARG_ENABLE(openssl,
AC_HELP_STRING([--disable-openssl], [Do not include openssl glue in the benchmark program]),,
[enable_openssl=yes])
LSH_RPATH_INIT([`echo $with_lib_path | sed 's/:/ /g'` \
`echo $exec_prefix | sed "s@^NONE@$prefix/lib@g" | sed "s@^NONE@$ac_default_prefix/lib@g"` \
/usr/local/lib /sw/local/lib /sw/lib \
/usr/gnu/lib /opt/gnu/lib /sw/gnu/lib /usr/freeware/lib /usr/pkg/lib])
# Checks for programs.
AC_PROG_CC
# When $CC foo.c -o foo creates both foo and foo.exe, autoconf picks
# up the foo.exe and sets exeext to .exe. That is correct for cygwin,
# which has some kind of magic link from foo to foo.exe, but not for
# rntcl. A better check for the cygwin case would check if the
# contents of foo and foo.exe are equal; in the rntcl case, foo is a
# sh script, and foo.exe is a windows executable.
if test "x$CC" = xrntcl ; then
AC_MSG_NOTICE([Compiling with rntcl; clearing EXEEXT and disabling assembler])
ac_exeext=''
ac_cv_exeext=''
EXEEXT=''
enable_assembler=no
fi
# Used by the testsuite only
AC_PROG_CXX
AC_LANG_PUSH(C++)
AC_TRY_COMPILE([],[return 0;],[CXX_TESTS='cxx-test$(EXEEXT)'], [CXX_TESTS=''])
AC_SUBST([CXX_TESTS])
AC_LANG_POP
AC_PROG_MAKE_SET
AC_PROG_RANLIB
AC_CHECK_TOOL(NM, nm, strings)
# Used only for the GNU-stack configure test.
AC_CHECK_TOOL(OBJDUMP, objdump, false)
if test "x$ac_cv_prog_cc_stdc" = xno ; then
AC_ERROR([the C compiler doesn't handle ANSI-C])
fi
AC_PROG_INSTALL
# According to the autoconf manual, needs install-sh from
# autoconf-2.60 or automake-1.10 to avoid races.
AC_PROG_MKDIR_P
LSH_DEPENDENCY_TRACKING
if test x$enable_dependency_tracking = xyes ; then
# Since the makefiles use include to get the dependency files, we must
# make sure that the files exist. We generate some more files than are
# actually needed.
AC_CONFIG_COMMANDS([dummy-dep-files],
[(cd "$srcdir" && find . -name '*.c' -print) \
| sed 's/\.c$//' | (while read f; do echo > "$f.o.d"; echo > "$f.po.d"; done)
])
fi
# Select assembler code
asm_path=
case "$host_cpu" in
[i?86* | k[5-8]* | pentium* | athlon])
asm_path=x86
;;
*sparc*)
AC_TRY_COMPILE([
#if defined(__sparcv9) || defined(__arch64__)
#error 64-bit sparc
#endif
], [], [
asm_path=sparc
], [
asm_path=sparc64
])
;;
*)
enable_assembler=no
;;
esac
# echo "enable_assembler: $enable_assembler, asm_path: $asm_path"
if test "x$enable_assembler" = xyes ; then
if test -n "$asm_path"; then
AC_MSG_NOTICE([Looking for assembler files in $asm_path/.])
found=no
for tmp_f in aes-encrypt-internal.asm aes-decrypt-internal.asm \
arcfour-crypt.asm md5-compress.asm sha1-compress.asm machine.m4; do
# echo "Looking for $srcdir/$asm_path/$tmp_f"
if test -f "$srcdir/$asm_path/$tmp_f"; then
# echo found
found=yes
AC_CONFIG_LINKS($tmp_f:$asm_path/$tmp_f)
fi
done
if test "$found" = no; then
enable_assembler=no
AC_MSG_WARN([No assembler files found.])
fi
fi
fi
LSH_CCPIC
SHLIBCFLAGS="$CCPIC"
case "$host_os" in
cygwin*)
SHLIBFORLINK='cygnettle-$(SHLIBMAJOR)-$(SHLIBMINOR).dll'
SHLIBSONAME=''
SHLIBFILE='libnettle.dll.a'
SHLIBLINK='$(CC) $(LDFLAGS) -shared -Wl,--out-implib=$(SHLIBFILE) -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--whole-archive'
SHLIBLIBS='-Wl,--no-whole-archive $(LIBS)'
;;
darwin*)
SHLIBFORLINK=libnettle.dylib
SHLIBSONAME='$(SHLIBFORLINK).$(SHLIBMAJOR)'
SHLIBFILE='$(SHLIBSONAME).$(SHLIBMINOR)'
SHLIBLINK='$(CC) -dynamiclib $(LDFLAGS)'
# SHLIBLIBS=' -lgmp'
;;
*)
SHLIBFORLINK=libnettle.so
SHLIBSONAME='$(SHLIBFORLINK).$(SHLIBMAJOR)'
SHLIBFILE='$(SHLIBSONAME).$(SHLIBMINOR)'
SHLIBLINK='$(CC) $(LDFLAGS) -shared -Wl,-soname=$(SHLIBSONAME)'
# FIXME: It might make some sense to link with -lgmp
SHLIBLIBS=''
;;
esac
if test "x$enable_shared" = xyes ; then
SHLIBTARGET='$(SHLIBFORLINK)'
SHLIBINSTALL=install-shared
else
SHLIBTARGET=''
SHLIBINSTALL=''
fi
if test "x$enable_pic" = xyes; then
CCPIC_MAYBE="$CCPIC"
else
CCPIC_MAYBE=''
fi
AC_SUBST([CCPIC_MAYBE])
ASM_SYMBOL_PREFIX=''
ASM_ELF_STYLE='no'
ASM_TYPE_FUNCTION=''
ASM_MARK_NOEXEC_STACK=''
ASM_ALIGN_LOG=''
if test x$enable_assembler = xyes ; then
AC_CACHE_CHECK([if globals are prefixed by underscore],
nettle_cv_asm_underscore,
[ # Default is no underscore
nettle_cv_asm_underscore=no
AC_COMPILE_IFELSE(
[int a_global_symbol;],
[ $NM conftest.$OBJEXT >conftest.out
if grep _a_global_symbol conftest.out >/dev/null ; then
nettle_cv_asm_underscore=yes
elif grep a_global_symbol conftest.out >/dev/null ; then
nettle_cv_asm_underscore=no
else
AC_MSG_WARN([nm doesn't list a_global_symbol at all])
fi],
[AC_MSG_WARN([test program with a single global could not be compiled!?])])])
if test x$nettle_cv_asm_underscore = xyes ; then
ASM_SYMBOL_PREFIX='_'
fi
AC_CACHE_CHECK([if we should use a .note.GNU-stack section],
nettle_cv_asm_gnu_stack,
[ # Default
nettle_cv_asm_gnu_stack=no
cat >conftest.c <<EOF
int foo() { return 0; }
EOF
nettle_compile="$CC $CFLAGS $CPPFLAGS -c conftest.c >conftest.out 2>&1"
if AC_TRY_EVAL(nettle_compile); then
cat conftest.out >&AC_FD_CC
$OBJDUMP -x conftest.o | grep '\.note\.GNU-stack' > /dev/null \
&& nettle_cv_asm_gnu_stack=yes
else
cat conftest.out >&AC_FD_CC
echo "configure: failed program was:" >&AC_FD_CC
cat conftest.s >&AC_FD_CC
fi
rm -f conftest.*])
if test x$nettle_cv_asm_gnu_stack = xyes ; then
ASM_MARK_NOEXEC_STACK='.section .note.GNU-stack,"",@progbits'
fi
AC_CACHE_CHECK([for ELF-style .type,%function pseudo-ops],
[nettle_cv_asm_type_percent_function],
[GMP_TRY_ASSEMBLE([
.text
.globl foo
.type foo,%function
foo:
.Lend:
.size foo, .Lend - foo
],
[nettle_cv_asm_type_percent_function=yes],
[nettle_cv_asm_type_percent_function=no])])
dnl Needs double quote for the # character
AC_CACHE_CHECK([[for ELF-style .type,#function pseudo-ops]],
[nettle_cv_asm_type_hash_function],
[GMP_TRY_ASSEMBLE([
.text
.globl foo
.type foo,#function
foo:
.Lend:
.size foo, .Lend - foo
],
[nettle_cv_asm_type_hash_function=yes],
[nettle_cv_asm_type_hash_function=no])])
if test x$nettle_cv_asm_type_percent_function = xyes ; then
ASM_ELF_STYLE='yes'
ASM_TYPE_FUNCTION='%function'
else
if test x$nettle_cv_asm_type_hash_function = xyes ; then
ASM_ELF_STYLE='yes'
ASM_TYPE_FUNCTION='#function'
fi
fi
AC_CACHE_CHECK([if .align assembly directive is logarithmic],
[nettle_cv_asm_align_log],
[GMP_TRY_ASSEMBLE([
.align 3
],
[nettle_cv_asm_align_log=yes],
[nettle_cv_asm_align_log=no])])
if test x$nettle_cv_asm_align_log = xyes ; then
ASM_ALIGN_LOG='yes'
fi
fi
AC_SUBST(ASM_SYMBOL_PREFIX)
AC_SUBST(ASM_ELF_STYLE)
AC_SUBST(ASM_TYPE_FUNCTION)
AC_SUBST(ASM_MARK_NOEXEC_STACK)
AC_SUBST(ASM_ALIGN_LOG)
AC_SUBST(SHLIBCFLAGS)
AC_SUBST(SHLIBMAJOR)
AC_SUBST(SHLIBMINOR)
AC_SUBST(SHLIBFORLINK)
AC_SUBST(SHLIBSONAME)
AC_SUBST(SHLIBFILE)
AC_SUBST(SHLIBLINK)
AC_SUBST(SHLIBTARGET)
AC_SUBST(SHLIBINSTALL)
AC_SUBST(SHLIBLIBS)
AC_PATH_PROG(M4, m4, m4)
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_UID_T
AC_TYPE_SIZE_T
AC_HEADER_TIME
AC_CHECK_HEADERS([openssl/blowfish.h openssl/des.h openssl/cast.h openssl/aes.h],,
[enable_openssl=no
break])
LSH_FUNC_ALLOCA
# Needed by the supplied memcmp.c
AC_C_BIGENDIAN
AC_REPLACE_FUNCS(memxor)
LSH_GCC_ATTRIBUTES
# According to Simon Josefsson, looking for uint32_t and friends in
# sys/types.h is needed on some systems, in particular cygwin.
AX_CREATE_STDINT_H([nettle-stdint.h], [sys/types.h])
# Checks for libraries
AC_CHECK_LIB(gmp, __gmpz_getlimbn,,
[AC_MSG_WARN(
[GNU MP not found, or not 3.1 or up, see http://www.swox.com/gmp.
Support for public key algorithms will be unavailable.])]
enable_public_key=no)
if test "x$enable_public_key" = xyes ; then
AC_DEFINE(WITH_PUBLIC_KEY)
RSA_EXAMPLES='rsa-keygen$(EXEEXT) rsa-sign$(EXEEXT) rsa-verify$(EXEEXT) rsa-encrypt$(EXEEXT) rsa-decrypt$(EXEEXT)'
RSA_TOOLS='pkcs1-conv$(EXEEXT)'
else
RSA_EXAMPLES=''
RSA_TOOLS=''
fi
AH_TEMPLATE([WITH_PUBLIC_KEY], [Define to enable public key features])
AC_SUBST(RSA_EXAMPLES)
AC_SUBST(RSA_TOOLS)
# Add -R flags needed to run programs linked with gmp
LSH_RPATH_FIX
OPENSSL_LIBFLAGS=''
# Check for openssl's libcrypto (used only for benchmarking)
if test x$enable_openssl = xyes ; then
AC_CHECK_LIB(crypto, BF_ecb_encrypt,
[OPENSSL_LIBFLAGS='-lcrypto'],
[enable_openssl=no])
fi
AH_TEMPLATE([WITH_OPENSSL],
[Define if you have openssl's libcrypto (used for benchmarking)])
if test x$enable_openssl = xyes ; then
AC_DEFINE(WITH_OPENSSL)
fi
AC_SUBST(OPENSSL_LIBFLAGS)
# Set these flags *last*, or else the test programs won't compile
if test x$GCC = xyes ; then
# Using -ggdb3 makes (some versions of) Redhat's gcc-2.96 dump core
if "$CC" --version | grep '^2\.96$' 1>/dev/null 2>&1; then
true
else
CFLAGS="$CFLAGS -ggdb3"
fi
# FIXME: It would be better to actually test if this option works and/or is needed.
# Or perhaps use -funsigned-char.
if "$CC" --version | grep 'gcc.* 4\.' 1>/dev/null 2>&1; then
CFLAGS="$CFLAGS -Wno-pointer-sign"
fi
CFLAGS="$CFLAGS -Wall -W \
-Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes \
-Wpointer-arith -Wbad-function-cast -Wnested-externs"
# Don't enable -Wcast-align as it results in tons of warnings in the
# DES code. And when using stdio.
# Don't enable -Waggregate-return, as that causes warnings for glibc
# inttypes.h.
fi
AC_CONFIG_FILES([config.make config.m4 Makefile])
AC_CONFIG_FILES([tools/Makefile testsuite/Makefile examples/Makefile])
AC_OUTPUT
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