dnl Process this with autoconf to create configure
-AC_PREREQ(2.59)
-AC_INIT([libffi], [2.1], [http://gcc.gnu.org/bugs.html])
+AC_INIT([libffi], [3.99999], [http://github.com/atgreen/libffi/issues])
AC_CONFIG_HEADERS([fficonfig.h])
AM_ENABLE_MULTILIB(, ..)
AC_CANONICAL_SYSTEM
target_alias=${target_alias-$host_alias}
-. ${srcdir}/configure.host
-
-AM_INIT_AUTOMAKE
+AM_INIT_AUTOMAKE([no-dist])
+
+# See if makeinfo has been installed and is modern enough
+# that we can use it.
+ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
+ [GNU texinfo.* \([0-9][0-9.]*\)],
+ [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
+AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
+
+# We would like our source tree to be readonly. However when releases or
+# pre-releases are generated, the flex/bison generated files as well as the
+# various formats of manuals need to be included along with the rest of the
+# sources. Therefore we have --enable-generated-files-in-srcdir to do
+# just that.
+AC_MSG_CHECKING(generated-files-in-srcdir)
+AC_ARG_ENABLE(generated-files-in-srcdir,
+AS_HELP_STRING([--enable-generated-files-in-srcdir],
+ [put copies of generated files in source dir intended for creating source tarballs for users without texinfo bison or flex]),
+[case "$enableval" in
+ yes) enable_generated_files_in_srcdir=yes ;;
+ no) enable_generated_files_in_srcdir=no ;;
+ *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
+ esac],
+[enable_generated_files_in_srcdir=no])
+AC_MSG_RESULT($enable_generated_files_in_srcdir)
+AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes)
# The same as in boehm-gc and libstdc++. Have to borrow it from there.
# We must force CC to /not/ be precious variables; otherwise
# the wrong, non-multilib-adjusted value will be used in multilibs.
# As a side effect, we have to subst CFLAGS ourselves.
+# Also save and restore CFLAGS, since AC_PROG_CC will come up with
+# defaults of its own if none are provided.
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
m4_define([_AC_ARG_VAR_PRECIOUS],[])
+save_CFLAGS=$CFLAGS
AC_PROG_CC
-m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
+AC_PROG_CXX
+CFLAGS=$save_CFLAGS
+m4_undefine([_AC_ARG_VAR_PRECIOUS])
+m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
AC_SUBST(CFLAGS)
AM_PROG_CC_C_O
AC_PROG_LIBTOOL
+# Test for 64-bit build.
+AC_CHECK_SIZEOF([size_t])
+
+cat > local.exp <<EOF
+set CC_FOR_TARGET "$CC"
+set CXX_FOR_TARGET "$CXX"
+EOF
+
AM_MAINTAINER_MODE
AC_CHECK_HEADERS(sys/mman.h)
-AC_CHECK_FUNCS(mmap)
+AC_CHECK_FUNCS([mmap mkostemp])
AC_FUNC_MMAP_BLACKLIST
dnl The -no-testsuite modules omit the test subdir.
AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
TARGETDIR="unknown"
-case "$host" in
-i*86-*-linux*) TARGET=X86; TARGETDIR=x86;;
-i*86-*-solaris*) TARGET=X86; TARGETDIR=x86;;
-i*86-*-beos*) TARGET=X86; TARGETDIR=x86;;
-i*86-*-freebsd* | i*86-*-kfreebsd*-gnu) TARGET=X86; TARGETDIR=x86;;
-i*86-*-netbsdelf* | i*86-*-knetbsd*-gnu) TARGET=X86; TARGETDIR=x86;;
-i*86-*-win32*) TARGET=X86_WIN32; TARGETDIR=x86;;
-i*86-*-cygwin*) TARGET=X86_WIN32; TARGETDIR=x86;;
-i*86-*-mingw*) TARGET=X86_WIN32; TARGETDIR=x86;;
-frv-*-*) TARGET=FRV; TARGETDIR=frv;;
-sparc-sun-4*) TARGET=SPARC; TARGETDIR=sparc;;
-sparc*-sun-*) TARGET=SPARC; TARGETDIR=sparc;;
-sparc-*-linux* | sparc-*-netbsdelf* | sparc-*-knetbsd*-gnu) TARGET=SPARC; TARGETDIR=sparc;;
-sparc64-*-linux* | sparc64-*-netbsd* | sparc64-*-knetbsd*-gnu) TARGET=SPARC; TARGETDIR=sparc;;
-alpha*-*-linux* | alpha*-*-osf* | alpha*-*-freebsd* | alpha*-*-kfreebsd*-gnu | alpha*-*-netbsd* | alpha*-*-knetbsd*-gnu) TARGET=ALPHA; TARGETDIR=alpha;;
-ia64*-*-*) TARGET=IA64; TARGETDIR=ia64;;
-m32r*-*-linux* ) TARGET=M32R; TARGETDIR=m32r;;
-m68k-*-linux*) TARGET=M68K; TARGETDIR=m68k;;
-mips64*-*);;
-mips-sgi-irix5.* | mips-sgi-irix6.*) TARGET=MIPS_IRIX; TARGETDIR=mips;;
-mips*-*-linux*) TARGET=MIPS_LINUX; TARGETDIR=mips;;
-powerpc*-*-linux* | powerpc-*-sysv*) TARGET=POWERPC; TARGETDIR=powerpc;;
-powerpc-*-beos*) TARGET=POWERPC; TARGETDIR=powerpc;;
-powerpc-*-darwin*) TARGET=POWERPC_DARWIN; TARGETDIR=powerpc;;
-powerpc-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
-rs6000-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
-arm*-*-linux-*) TARGET=ARM; TARGETDIR=arm;;
-arm*-*-netbsdelf* | arm*-*-knetbsd*-gnu) TARGET=ARM; TARGETDIR=arm;;
-cris-*-*) TARGET=LIBFFI_CRIS; TARGETDIR=cris;;
-s390-*-linux-*) TARGET=S390; TARGETDIR=s390;;
-s390x-*-linux-*) TARGET=S390; TARGETDIR=s390;;
-x86_64-*-linux* | x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu) TARGET=X86_64; TARGETDIR=x86;;
-sh-*-linux* | sh[[34]]*-*-linux*) TARGET=SH; TARGETDIR=sh;;
-sh64-*-linux* | sh5*-*-linux*) TARGET=SH64; TARGETDIR=sh64;;
-hppa-*-linux* | parisc-*-linux*) TARGET=PA; TARGETDIR=pa;;
-esac
+HAVE_LONG_DOUBLE_VARIANT=0
-AC_SUBST(AM_RUNTESTFLAGS)
+. ${srcdir}/configure.host
-if test $TARGETDIR = unknown; then
+if test -n "${UNSUPPORTED}"; then
AC_MSG_ERROR(["libffi has not been ported to $host."])
fi
-AM_CONDITIONAL(MIPS_IRIX, test x$TARGET = xMIPS_IRIX)
-AM_CONDITIONAL(MIPS_LINUX, test x$TARGET = xMIPS_LINUX)
-AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
-AM_CONDITIONAL(X86, test x$TARGET = xX86)
-AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
-AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
-AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
-AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
-AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
-AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
-AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
-AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
-AM_CONDITIONAL(ARM, test x$TARGET = xARM)
-AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
-AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
-AM_CONDITIONAL(S390, test x$TARGET = xS390)
-AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
-AM_CONDITIONAL(SH, test x$TARGET = xSH)
-AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
-AM_CONDITIONAL(PA, test x$TARGET = xPA)
-
-case x$TARGET in
- xMIPS*) TARGET=MIPS ;;
- *) ;;
-esac
+AC_SUBST(AM_RUNTESTFLAGS)
+AC_SUBST(AM_LTLDFLAGS)
AC_HEADER_STDC
AC_CHECK_FUNCS(memcpy)
AC_FUNC_ALLOCA
-AC_COMPILE_CHECK_SIZEOF(double)
-AC_COMPILE_CHECK_SIZEOF(long double)
+AC_CHECK_SIZEOF(double)
+AC_CHECK_SIZEOF(long double)
# Also AC_SUBST this variable for ffi.h.
-HAVE_LONG_DOUBLE=0
-if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
+if test -z "$HAVE_LONG_DOUBLE"; then
+ HAVE_LONG_DOUBLE=0
if test $ac_cv_sizeof_long_double != 0; then
- HAVE_LONG_DOUBLE=1
- AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
+ if test $HAVE_LONG_DOUBLE_VARIANT != 0; then
+ AC_DEFINE(HAVE_LONG_DOUBLE_VARIANT, 1, [Define if you support more than one size of the long double type])
+ HAVE_LONG_DOUBLE=1
+ else
+ if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
+ HAVE_LONG_DOUBLE=1
+ AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
+ fi
+ fi
fi
fi
AC_SUBST(HAVE_LONG_DOUBLE)
+AC_SUBST(HAVE_LONG_DOUBLE_VARIANT)
+
+AC_C_BIGENDIAN
-AC_C_BIGENDIAN_CROSS
+GCC_AS_CFI_PSEUDO_OP
-if test x$TARGET = xSPARC; then
+case "$TARGET" in
+ SPARC)
AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
libffi_cv_as_sparc_ua_pcrel, [
save_CFLAGS="$CFLAGS"
libffi_cv_as_register_pseudo_op, [
libffi_cv_as_register_pseudo_op=unknown
# Check if we have .register
- AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
+ AC_TRY_COMPILE(,[asm (".register %g2, #scratch");],
[libffi_cv_as_register_pseudo_op=yes],
[libffi_cv_as_register_pseudo_op=no])
])
AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
[Define if your assembler supports .register.])
fi
+ ;;
+
+ X86*)
+ AC_CACHE_CHECK([assembler supports pc related relocs],
+ libffi_cv_as_x86_pcrel, [
+ libffi_cv_as_x86_pcrel=no
+ echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
+ if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then
+ libffi_cv_as_x86_pcrel=yes
+ fi
+ ])
+ if test "x$libffi_cv_as_x86_pcrel" = xyes; then
+ AC_DEFINE(HAVE_AS_X86_PCREL, 1,
+ [Define if your assembler supports PC relative relocs.])
+ fi
+ ;;
+
+ S390)
+ AC_CACHE_CHECK([compiler uses zarch features],
+ libffi_cv_as_s390_zarch, [
+ libffi_cv_as_s390_zarch=no
+ echo 'void foo(void) { bar(); bar(); }' > conftest.c
+ if $CC $CFLAGS -S conftest.c > /dev/null 2>&1; then
+ if grep -q brasl conftest.s; then
+ libffi_cv_as_s390_zarch=yes
+ fi
+ fi
+ ])
+ if test "x$libffi_cv_as_s390_zarch" = xyes; then
+ AC_DEFINE(HAVE_AS_S390_ZARCH, 1,
+ [Define if the compiler uses zarch features.])
+ fi
+ ;;
+esac
+
+# On PaX enable kernels that have MPROTECT enable we can't use PROT_EXEC.
+AC_ARG_ENABLE(pax_emutramp,
+ [ --enable-pax_emutramp enable pax emulated trampolines, for we can't use PROT_EXEC],
+ if test "$enable_pax_emutramp" = "yes"; then
+ AC_DEFINE(FFI_MMAP_EXEC_EMUTRAMP_PAX, 1,
+ [Define this if you want to enable pax emulated trampolines])
+ fi)
+
+FFI_EXEC_TRAMPOLINE_TABLE=0
+case "$target" in
+ *arm*-apple-darwin* | aarch64-apple-darwin*)
+ FFI_EXEC_TRAMPOLINE_TABLE=1
+ AC_DEFINE(FFI_EXEC_TRAMPOLINE_TABLE, 1,
+ [Cannot use PROT_EXEC on this target, so, we revert to
+ alternative means])
+ ;;
+ *-apple-darwin1* | *-*-freebsd* | *-*-kfreebsd* | *-*-openbsd* | *-pc-solaris*)
+ AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1,
+ [Cannot use malloc on this target, so, we revert to
+ alternative means])
+ ;;
+esac
+AM_CONDITIONAL(FFI_EXEC_TRAMPOLINE_TABLE, test x$FFI_EXEC_TRAMPOLINE_TABLE = x1)
+AC_SUBST(FFI_EXEC_TRAMPOLINE_TABLE)
+
+if test x$TARGET = xX86_64; then
+ AC_CACHE_CHECK([toolchain supports unwind section type],
+ libffi_cv_as_x86_64_unwind_section_type, [
+ cat > conftest1.s << EOF
+.text
+.globl foo
+foo:
+jmp bar
+.section .eh_frame,"a",@unwind
+bar:
+EOF
+
+ cat > conftest2.c << EOF
+extern void foo();
+int main(){foo();}
+EOF
+
+ libffi_cv_as_x86_64_unwind_section_type=no
+ # we ensure that we can compile _and_ link an assembly file containing an @unwind section
+ # since the compiler can support it and not the linker (ie old binutils)
+ if $CC -Wa,--fatal-warnings $CFLAGS -c conftest1.s > /dev/null 2>&1 && \
+ $CC conftest2.c conftest1.o > /dev/null 2>&1 ; then
+ libffi_cv_as_x86_64_unwind_section_type=yes
+ fi
+ ])
+ if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then
+ AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
+ [Define if your assembler supports unwind section type.])
+ fi
fi
-AC_CACHE_CHECK([whether .eh_frame section should be read-only],
- libffi_cv_ro_eh_frame, [
- libffi_cv_ro_eh_frame=no
- echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
- if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
- if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
- libffi_cv_ro_eh_frame=yes
- elif grep '.section.*eh_frame.*#alloc' conftest.c \
- | grep -v '#write' > /dev/null; then
- libffi_cv_ro_eh_frame=yes
+if test "x$GCC" = "xyes"; then
+ AC_CACHE_CHECK([whether .eh_frame section should be read-only],
+ libffi_cv_ro_eh_frame, [
+ libffi_cv_ro_eh_frame=no
+ echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
+ if $CC $CFLAGS -c -fpic -fexceptions -o conftest.o conftest.c > /dev/null 2>&1; then
+ objdump -h conftest.o > conftest.dump 2>&1
+ libffi_eh_frame_line=`grep -n eh_frame conftest.dump | cut -d: -f 1`
+ if test "x$libffi_eh_frame_line" != "x"; then
+ libffi_test_line=`expr $libffi_eh_frame_line + 1`p
+ sed -n $libffi_test_line conftest.dump > conftest.line
+ if grep READONLY conftest.line > /dev/null; then
+ libffi_cv_ro_eh_frame=yes
+ fi
fi
- fi
- rm -f conftest.*
- ])
-if test "x$libffi_cv_ro_eh_frame" = xyes; then
- AC_DEFINE(HAVE_RO_EH_FRAME, 1,
- [Define if .eh_frame sections should be read-only.])
- AC_DEFINE(EH_FRAME_FLAGS, "a",
- [Define to the flags needed for the .section .eh_frame directive.])
-else
- AC_DEFINE(EH_FRAME_FLAGS, "aw",
- [Define to the flags needed for the .section .eh_frame directive.])
+ fi
+ rm -f conftest.*
+ ])
+ if test "x$libffi_cv_ro_eh_frame" = xyes; then
+ AC_DEFINE(HAVE_RO_EH_FRAME, 1,
+ [Define if .eh_frame sections should be read-only.])
+ AC_DEFINE(EH_FRAME_FLAGS, "a",
+ [Define to the flags needed for the .section .eh_frame directive. ])
+ else
+ AC_DEFINE(EH_FRAME_FLAGS, "aw",
+ [Define to the flags needed for the .section .eh_frame directive. ])
+ fi
+
+ AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
+ libffi_cv_hidden_visibility_attribute, [
+ echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1 ; }' > conftest.c
+ libffi_cv_hidden_visibility_attribute=no
+ if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
+ if grep '\.hidden.*foo' conftest.s >/dev/null; then
+ libffi_cv_hidden_visibility_attribute=yes
+ fi
+ fi
+ rm -f conftest.*
+ ])
+ if test $libffi_cv_hidden_visibility_attribute = yes; then
+ AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
+ [Define if __attribute__((visibility("hidden"))) is supported.])
+ fi
fi
+AH_BOTTOM([
+#ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
+#ifdef LIBFFI_ASM
+#define FFI_HIDDEN(name) .hidden name
+#else
+#define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
+#endif
+#else
+#ifdef LIBFFI_ASM
+#define FFI_HIDDEN(name)
+#else
+#define FFI_HIDDEN
+#endif
+#endif
+])
+
AC_SUBST(TARGET)
AC_SUBST(TARGETDIR)
+changequote(<,>)
+TARGET_OBJ=
+for i in $SOURCES; do
+ TARGET_OBJ="${TARGET_OBJ} src/${TARGETDIR}/"`echo $i | sed 's/[cS]$/lo/'`
+done
+changequote([,])
+AC_SUBST(TARGET_OBJ)
+
AC_SUBST(SHELL)
AC_ARG_ENABLE(debug,
if test "$enable_debug" = "yes"; then
AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
fi)
+AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
AC_ARG_ENABLE(structs,
[ --disable-structs omit code for struct support],
if test "$enable_structs" = "no"; then
- AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
+ AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this if you do not want support for aggregate types.])
fi)
+AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes")
AC_ARG_ENABLE(raw-api,
[ --disable-raw-api make the raw api unavailable],
if test "$enable_raw_api" = "no"; then
- AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
+ AC_DEFINE(FFI_NO_RAW_API, 1, [Define this if you do not want support for the raw API.])
fi)
AC_ARG_ENABLE(purify-safety,
AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
fi)
+GCC_WITH_TOOLEXECLIBDIR
+
if test -n "$with_cross_host" &&
test x"$with_cross_host" != x"no"; then
toolexecdir='$(exec_prefix)/$(target_alias)'
- toolexeclibdir='$(toolexecdir)/lib'
+ case ${with_toolexeclibdir} in
+ no)
+ toolexeclibdir='$(toolexecdir)/lib'
+ ;;
+ *)
+ toolexeclibdir=${with_toolexeclibdir}
+ ;;
+ esac
else
toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
toolexeclibdir='$(libdir)'
multilib_arg=
fi
+# Check linker support.
+LIBAT_ENABLE_SYMVERS
+
+# Determine what GCC version number to use in filesystem paths.
+GCC_BASE_VER
+
AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
AC_CONFIG_COMMANDS(src, [
test -d src || mkdir src
AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
-AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)
+AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc)
AC_OUTPUT
projects / gcc.git / blobdiff