Last weekend I attempted to setup a linux->cygwin cross compiler (and
basic sysroot). However, it didn't work: while a simple C 'Hello World'
app could be compiled, copied over to a win32 system and executed, a C++
'Hello World' did not:
1) using the cygwin-provided cygstdc++-6.dll and cyggcc_s-1.dll, it
segfaulted.
2) copying over to the win32 system ALSO the cygstdc++-6.dll and
cyggcc_s-1.dll built as part of the cross toolchain, and running the C++
hello world app -- it didn't segfault. But it didn't print anything to
stdout (std::cout), either.
Now, I've build linux-hosted cross compilers before -- and I'm very
familiar with cygwin, too -- so I'm not exactly a novice here. But...I
wonder if I'm just doing something silly, and need another pair (or
hundred) of eyes to point out the obvious.
so, I've attached my build procedure (WARNING, for the archvies: the
compiler produced using this procedure is BROKEN. DO NOT USE).
I based my compiler on Dave's recent 4.5.0-1 release, and the current
cygwin binutils packages.
Anybody have a suggestion? What am I doing wrong?
--
Chuck
HOST_TRIPLE=i686-pc-linux-gnu
HOST_PREFIX=/opt/devel/cygwin
TARGET_TRIPLE=i686-pc-cygwin
TARGET_PREFIX=/usr
SYSROOT=${HOST_PREFIX}/${TARGET_TRIPLE}/sys-root
BUILDTOP=/mnt/junk
GCCVER=4.5.0
PKGREL=1
DOWNLOADS=/opt/devel/cygwin/src/downloads
MIRROR=http://mirrors.kernel.org/sourceware/cygwin/release
export PATH=${HOST_PREFIX}/bin:/opt/devel/cygwin/src/private/bin:${PATH}
do_get () {
pushd ${DOWNLOADS} >/dev/null
wget ${MIRROR}/$1
popd >/dev/null
}
mkdir -p ${DOWNLOADS}
do_get w32api/w32api-3.14-1.tar.bz2
do_get cygwin/cygwin-1.7.6-1.tar.bz2
do_get binutils/binutils-2.20.51-2-src.tar.bz2
do_get gcc4/gcc4-4.5.0-1-src.tar.bz2
mkdir -p ${SYSROOT}
(cd ${SYSROOT} && tar xvjf ${DOWNLOADS)/w32api-3.14-1.tar.bz2)
(cd ${SYSROOT} && tar xvjf ${DOWNLOADS}/cygwin-1.7.6-1.tar.bz2)
# not sure if sysroot support extends to the w32api stuff, so
# make sure the libs that appear in the specs file exist in the
# main lib dir, and not just in the w32api subdir. In any case,
# this is *absolutely* necessary during the build of the language
# runtime libraries...
(cd ${SYSROOT}${TARGET_PREFIX}/lib && ln -fs w32api/libkernel.a .)
(cd ${SYSROOT}${TARGET_PREFIX}/lib && ln -fs w32api/libuser32.a .)
(cd ${SYSROOT}${TARGET_PREFIX}/lib && ln -fs w32api/libadvapi32.a .)
(cd ${SYSROOT}${TARGET_PREFIX}/lib && ln -fs w32api/libshell32.a .)
(cd ${SYSROOT}${TARGET_PREFIX}/lib && ln -fs w32api/libgdi32.a .)
(cd ${SYSROOT}${TARGET_PREFIX}/lib && ln -fs w32api/libcomdlg32.a .)
# ensure linux package installed: libgmp-devel, libgmp10
# ensure linux package installed: mpfr-devel, libmpfr1
# ensure linux package installed: libmpc-devel, libmpc2
# ensure linux package installed: libcloog-devel, libcloog0
# ensure linux package installed: libppl-devel, libppl7
############################################
## binutils
############################################
cd $BUILDTOP
mkdir binutils
cd binutils
tar xvjf ${DOWNLOADS}/binutils-2.20.51-2-src.tar.bz2
mkdir _build
cd _build
${BUILDTOP}/binutils/binutils-2.20.51-2/configure \
--prefix=${HOST_PREFIX} \
--host=${HOST_TRIPLE} \
--build=${HOST_TRIPLE} \
--target=${TARGET_TRIPLE} \
--with-build-sysroot=${SYSROOT} \
--with-sysroot=${SYSROOT}
make
make install DESTDIR=${BUILDTOP}/binutils/_inst
cd ${BUILDTOP}/binutils/_inst
tar cvJf ../binutils-2.20.51-2-cygwin.tar.xz opt
cd /
tar xvJf ${BUILDTOP}/binutils/binutils-2.20.51-2-cygwin.tar.xz
############################################
## custom autoconf, automake
## gcc-4.5.0 requires ac-2.64, am-1.11.1
############################################
cd ${DOWNLOADS}
wget http://ftp.gnu.org/gnu/autoconf/autoconf-2.64.tar.bz2
wget http://ftp.gnu.org/gnu/automake/automake-1.11.1.tar.bz2
cd ${BUILDTOP}
mkdir autoconf
cd autoconf
tar xvjf ${DOWNLOADS}/autoconf-2.64.tar.bz2
mkdir _build
cd _build
${BUILDTOP}/autoconf/autoconf-2.64/configure --prefix=${BUILDTOP}/private
make
make install
cd ${BUILDTOP}
mkdir automake
cd automake
tar xvjf ${DOWNLOADS}/automake-1.11.1.tar.bz2
mkdir _build
cd _build
${BUILDTOP}/automake/automake-1.11.1/configure --prefix=${BUILDTOP}/private
make
make install
mkdir -p ${BUILDTOP}/private/share/aclocal
echo '/usr/share/aclocal' > ${BUILDTOP}/private/share/aclocal/dirlist
############################################
## gcc
############################################
cd $BUILDTOP
mkdir gcc45
cd gcc45
tar xvjf ${DOWNLOADS}/gcc4-4.5.0-1-src.tar.bz2
tar xvjf gcc-4.5.0.tar.bz2
cd gcc-4.5.0
patch -p2 < ../classpath-0.98-FIONREAD.patch
patch -p2 < ../classpath-0.98-build.patch
patch -p2 < ../classpath-0.98-awt.patch
patch -p2 < ../gcc45-ada.diff
patch -p0 < ../gcc45-cygwin-lto.diff
patch -p2 < ../gcc45-ehdebug.diff
patch -p2 < ../gcc45-libffi.diff
patch -p2 < ../gcc45-libstdc.diff
patch -p2 < ../gcc45-misc-core.diff
patch -p2 < ../gcc45-mnocygwin.diff
patch -p0 < ../gcc45-sig-unwind.diff
patch -p2 < ../gcc45-skiptest.diff
patch -p0 < ../gcc45-pruneopts-term.diff
patch -p2 < ../gcc45-weak-binding.diff
patch -p2 < ../gcc4-4.5.0-1.cygwin.patch
pushd libstdc++-v3 >/dev/null
cat <<"EOF" > crossconfig.m4.patch
--- crossconfig.m4.orig 2009-06-02 15:15:03.000000000 -0400
+++ crossconfig.m4 2010-08-22 22:35:55.345320303 -0400
@@ -141,7 +141,7 @@
;;
esac
;;
- *-linux* | *-uclinux* | *-gnu* | *-kfreebsd*-gnu | *-knetbsd*-gnu)
+ *-linux* | *-uclinux* | *-gnu* | *-kfreebsd*-gnu | *-knetbsd*-gnu |
*-cygwin* )
GLIBCXX_CHECK_COMPILER_FEATURES
GLIBCXX_CHECK_LINKER_FEATURES
GLIBCXX_CHECK_MATH_SUPPORT
EOF
patch -p0 < ./crossconfig.m4.patch
popd >/dev/null
gcc_reconf() {
local S=${BUILDTOP}/gcc45/gcc-4.5.0
pushd ${S} >/dev/null
cd ${S}
autoconf || exit -1
cd ${S}/gcc
autoconf || exit -1
autoheader || exit -1
cd ${S}/libiberty
autoconf || exit -1
cd ${S}/libstdc++-v3
autoconf || exit -1
cd ${S}/libjava
autoconf || exit -1
cd ${S}/libffi
aclocal -I . -I .. -I ../config || exit -1
autoconf || exit -1
cd ${S}
for x in boehm-gc libffi libgfortran libgomp libjava libmudflap libssp
libstdc++-v3 zlib;
do
pushd $x >/dev/null
automake || exit -1
popd >/dev/null
done
cd ${S}/gcc/testsuite/ada/acats
chmod a+x run_test.exp
popd >/dev/null
}
gcc_reconf
cd $BUILDTOP/gcc
mkdir _build
cd _build
${BUILDTOP}/gcc45/gcc-4.5.0/configure \
--prefix=${HOST_PREFIX} \
--datadir=${HOST_PREFIX}/share \
--mandir=${HOST_PREFIX}/share/man \
--infodir=${HOST_PREFIX}/share/info \
--host=${HOST_TRIPLE} \
--build=${HOST_TRIPLE} \
--target=${TARGET_TRIPLE} \
--with-build-sysroot=${SYSROOT} \
--with-sysroot=${SYSROOT} \
-v --with-gmp=/usr --with-mpfr=/usr \
--disable-bootstrap --enable-version-specific-runtime-libs \
--libexecdir=${HOST_PREFIX}/lib \
--enable-static --enable-shared --enable-shared-libgcc \
--disable-__cxa_atexit --with-gnu-ld --with-gnu-as --with-dwarf2 \
--disable-sjlj-exceptions --enable-languages=c,c++,fortran \
--enable-graphite --disable-lto \
--disable-symvers --enable-libgomp --enable-libssp
--enable-threads=posix \
--with-arch=i686 --with-tune=generic
make -j6
D=${BUILDTOP}/gcc45/_inst
make install DESTDIR=${D}
# don't install target libiberty
rm -f ${D}${HOST_PREFIX}/lib/libiberty.a
rm -f ${D}${HOST_PREFIX}/${TARGET_TRIPLE}/lib/libiberty.a
# move runtime DLLs to sysroot
mkdir -p ${D}${SYSROOT}${TARGET_PREFIX}/bin
mv ${D}${HOST_PREFIX}/bin/*.dll ${D}${SYSROOT}${TARGET_PREFIX}/bin
# libgcc1
cd ${D}
tar cvJf ${BUILDTOP}/gcc45/libgcc1-${GCCVER}-${PKGVER}-cygwin.tar.xz \
${SYSROOT:1}${TARGET_PREFIX}/bin/cyggcc_s-1.dll
# libstdc++6
cd ${D}
tar cvJf ${BUILDTOP}/gcc45/libstdc++6-${GCCVER}-${PKGVER}-cygwin.tar.xz \
${SYSROOT:1}${TARGET_PREFIX}/bin/cygstdc++-6.dll
# libgomp
cd ${D}
tar cvJf ${BUILDTOP}/gcc45/libgomp1-${GCCVER}-${PKGVER}-cygwin.tar.xz \
${SYSROOT:1}${TARGET_PREFIX}/bin/cyggomp-1.dll
# libssp0
cd ${D}
tar cvJf ${BUILDTOP}/gcc45/libssp0-${GCCVER}-${PKGVER}-cygwin.tar.xz \
${SYSROOT:1}${TARGET_PREFIX}/bin/cygssp-0.dll
# libgfortran3
cd ${D}
tar cvJf ${BUILDTOP}/gcc45/libgfortran3-${GCCVER}-${PKGVER}-cygwin.tar.xz \
${SYSROOT:1}${TARGET_PREFIX}/bin/cyggfortran-3.dll
# g++
cd ${D}
tar cvJf ${BUILDTOP}/gcc45/gcc-g++-${GCCVER}-${PKGVER}-cygwin.tar.xz \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/include/c++ \
${HOST_PREFIX:1}/bin/${TARGET_TRIPLE}-c++ \
${HOST_PREFIX:1}/bin/${TARGET_TRIPLE}-g++ \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/cc1plus \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libstdc++.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libstdc++.dll.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libstdc++.la \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libsupc++.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libsupc++.la \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libstdc++.dll.a-gdb.py \
${HOST_PREFIX:1}/share/gcc-${GCCVER}/python/libstdcxx/__init__.py \
${HOST_PREFIX:1}/share/gcc-${GCCVER}/python/libstdcxx/v6/__init__.py \
${HOST_PREFIX:1}/share/gcc-${GCCVER}/python/libstdcxx/v6/printers.py \
${HOST_PREFIX:1}/share/man/man1/${TARGET_TRIPLE}-g++.1
# gfortran
tar cvJf ${BUILDTOP}/gcc45/gcc-gfortran-${GCCVER}-${PKGVER}-cygwin.tar.xz \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/finclude \
${HOST_PREFIX:1}/bin/${TARGET_TRIPLE}-gfortran \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/f951 \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgfortran.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgfortran.dll.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgfortran.la \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgfortranbegin.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgfortranbegin.la
\
${HOST_PREFIX:1}/share/info/gfortran.info \
${HOST_PREFIX:1}/share/man/man1/${TARGET_TRIPLE}-gfortran.1
# gcc
tar cvJf ${BUILDTOP}/gcc45/gcc-core-${GCCVER}-${PKGVER}-cygwin.tar.xz \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/include/*.h \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/include/ssp \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/include-fixed \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/install-tools \
${HOST_PREFIX:1}/bin/${TARGET_TRIPLE}-cpp \
${HOST_PREFIX:1}/bin/${TARGET_TRIPLE}-gcc \
${HOST_PREFIX:1}/bin/${TARGET_TRIPLE}-gcc-${GCCVER} \
${HOST_PREFIX:1}/bin/${TARGET_TRIPLE}-gccbug \
${HOST_PREFIX:1}/bin/${TARGET_TRIPLE}-gcov \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/cc1 \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/collect2 \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/crtbegin.o \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/crtend.o \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/crtfastmath.o \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgcc.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgcc_eh.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgcc_s.dll.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgcov.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgomp.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgomp.dll.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgomp.la \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libgomp.spec \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libssp.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libssp.dll.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libssp.la \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libssp_nonshared.a \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/libssp_nonshared.la
\
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/lto-wrapper \
${HOST_PREFIX:1}/lib/gcc/${TARGET_TRIPLE}/${GCCVER}/plugin/ \
${HOST_PREFIX:1}/share/locale/* \
${HOST_PREFIX:1}/share/info/cpp.info \
${HOST_PREFIX:1}/share/info/cppinternals.info \
${HOST_PREFIX:1}/share/info/gcc.info \
${HOST_PREFIX:1}/share/info/gccinstall.info \
${HOST_PREFIX:1}/share/info/gccint.info \
${HOST_PREFIX:1}/share/info/libgomp.info \
${HOST_PREFIX:1}/share/man/man1/${TARGET_TRIPLE}-cpp.1 \
${HOST_PREFIX:1}/share/man/man1/${TARGET_TRIPLE}-gcc.1 \
${HOST_PREFIX:1}/share/man/man1/${TARGET_TRIPLE}-gcov.1 \
${HOST_PREFIX:1}/share/man/man7/gpl.7 \
${HOST_PREFIX:1}/share/man/man7/gfdl.7 \
${HOST_PREFIX:1}/share/man/man7/fsf-funding.7
cd /
tar xvJf ${BUILDTOP}/gcc45/gcc-core-${GCCVER}-${PKGREL}-cygwin.tar.xz
tar xvJf ${BUILDTOP}/gcc45/gcc-g++-${GCCVER}-${PKGREL}-cygwin.tar.xz
tar xvJf ${BUILDTOP}/gcc45/gcc-gfortran-${GCCVER}-${PKGREL}-cygwin.tar.xz
tar xvJf ${BUILDTOP}/gcc45/libgcc1-${GCCVER}-${PKGREL}-cygwin.tar.xz
tar xvJf ${BUILDTOP}/gcc45/libgfortran3-${GCCVER}-${PKGREL}-cygwin.tar.xz
tar xvJf ${BUILDTOP}/gcc45/libgomp1-${GCCVER}-${PKGREL}-cygwin.tar.xz
tar xvJf ${BUILDTOP}/gcc45/libssp0-${GCCVER}-${PKGREL}-cygwin.tar.xz
tar xvJf ${BUILDTOP}/gcc45/libstdc++6-${GCCVER}-${PKGREL}-cygwin.tar.xz
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