I'm reading a book but I get one error while compiling with this code.
$ rm -f injection.dylib
$ export PLATFORM=/Developer/Platforms/iPhoneOS.platform
$ $PLATFORM/Developer/usr/bin/arm-apple-darwin10-llvm-gcc-4.2 \
-c -o injection.o injection.c \
-isysroot $PLATFORM/Developer/SDKs/iPhoneOS5.0.sdk \ -fPIC
$ $PLATFORM/Developer/usr/bin/ld \ -dylib -lsystem -lobjc \
-o injection.dylib injection.o \
-syslibroot $PLATFORM/Developer/SDKs/iPhoneOS5.0.sdk/
I've some trouble especially in this line:
$PLATFORM/Developer/usr/bin/arm-apple-darwin10-llvm-gcc-4.2 \
-c -o injection.o injection.c \
-isysroot $PLATFORM/Developer/SDKs/iPhoneOS5.0.sdk \ -fPIC
This is the error
arm-apple-darwin10-llvm-gcc-4.2: -fPIC: No such file or directory
how can I solve... what does it means?
It means you mistyped the command line:
stieber#gatekeeper:~$ gcc \ -fPIC
gcc: error: -fPIC: No such file or directory
gcc: fatal error: no input files
compilation terminated.
Seems the \ in the middle of the line makes gcc (and probably the llvm-gcc as well) stop considering arguments as options and always treats them as filenames.
stieber#gatekeeper:~$ gcc -fPIC
gcc: fatal error: no input files
compilation terminated.
gives the expected result.
Related
I am trying to build TerraGear with self-made AutoTools files (configure script). TerraGear is split into several subprojects. For each, I create a different set of configure.ac and Makefile.am files, but they are all almost the same.
Consider the following two files:
configure.ac
AC_PREREQ([2.69])
AC_INIT([TerraGear libterragear], [2.1.0], [])
AC_CONFIG_SRCDIR([airport.cxx])
AC_CONFIG_FILES([Makefile])
AM_INIT_AUTOMAKE([foreign])
AC_PROG_CXX
PKG_CHECK_MODULES([ZLIB], [zlib])
PKG_CHECK_MODULES([GDAL], [gdal])
AC_ARG_WITH([simgear-dir], [AS_HELP_STRING(
[--with-simgear-dir=prefix],
[installation prefix of SimGear])],
[
SIMGEAR_CPPFLAGS="-I${withval}/include"
SIMGEAR_LIBRARY="-L${withval}/lib"
]
)
AC_MSG_NOTICE([simgear cppflags : ${SIMGEAR_CPPFLAGS}])
AC_OUTPUT
Makefile.am
bin_PROGRAMS = genapts850
genapts850_SOURCES = airport.cxx \
apt_math.cxx \
closedpoly.cxx \
debug.cxx \
elevations.cxx \
helipad.cxx \
lights.cxx \
linearfeature.cxx \
linked_objects.cxx \
main.cxx \
object.cxx \
output.cxx \
parser.cxx \
runway.cxx \
rwy_simple.cxx \
rwy_gen.cxx \
scheduler.cxx \
taxiway.cxx
genapts850_LDADD = -L$(top_srcdir)/../../Lib/terragear \
$(SIMGEAR_LIBRARY) \
-lSimGearCore \
-lSimGearScene \
-lterragear \
$(ZLIB_LIBRARY) \
$(GDAL_LIBRARY)
genapts850_CXXFLAGS = -I$(top_srcdir)/../../Lib \
-I$(top_srcdir)/../../Lib/terragear \
$(SIMGEAR_CPPFLAGS) \
$(ZLIB_CFLAGS) \
$(GDAL_CFLAGS)/gdal
I run autoreconf:
autoreconf -vfi
autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal --force
autoreconf: configure.ac: tracing
autoreconf: configure.ac: not using Libtool
autoreconf: running: /usr/bin/autoconf --force
autoreconf: configure.ac: not using Autoheader
autoreconf: running: automake --add-missing --copy --force-missing
autoreconf: Leaving directory `.'
then run the configure script:
./configure --with-simgear-dir=/path/to/simgear/installation/prefix
[...]
configure: simgear cppflags : -I/path/to/simgear/installation/prefix/include
[...]
then I run make:
make
g++ -DPACKAGE_NAME=\"TerraGear\ libterragear\" -DPACKAGE_TARNAME=\"terragear-libterragear\" -DPACKAGE_VERSION=\"2.1.0\" -DPACKAGE_STRING=\"TerraGear\ libterragear\ 2.1.0\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"terragear-libterragear\" -DVERSION=\"2.1.0\" -I. -I./../../Lib -I./../../Lib/terragear -Ig++ -DPACKAGE_NAME=\"TerraGear\ libterragear\" -DPACKAGE_TARNAME=\"terragear-libterragear\" -DPACKAGE_VERSION=\"2.1.0\" -DPACKAGE_STRING=\"TerraGear\ libterragear\ 2.1.0\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"terragear-libterragear\" -DVERSION=\"2.1.0\" -I. -I./../../Lib -I./../../Lib/terragear -I/path/to/simgear/installation/prefix/include/gdal -g -O2 -MT genapts850-airport.o -MD -MP -MF .deps/genapts850-airport.Tpo -c -o genapts850-airport.o `test -f 'airport.cxx' || echo './'`airport.cxx
airport.cxx:6:10: fatal error: simgear/compiler.h: Datei oder Verzeichnis nicht gefunden
6 | #include <simgear/compiler.h>
| ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
make: *** [Makefile:471: genapts850-airport.o] Fehler 1
(simgear/compiler.h resides inside /path/to/simgear/installation/prefix/include)
What am I doing wrong ? I'm banging my head into the screen for three hours now without being able to figure out the problem. Please help …
Not all shell variables defined in configure are forwarded to output files. Generally speaking, you need to use AC_SUBST() to tell Autoconf that a shell variable should be an output variable:
AC_SUBST([SIMGEAR_CPPFLAGS])
AC_SUBST([SIMGEAR_LIBRARY])
I'm getting the next error with llc when trying to to link some IR files:
LLVM ERROR: Cannot select: intrinsic %llvm.objc.clang.arc.use
I discovered that if I disabled clang optimization (O0) during compilation the error doesn't pop up, but I don't want to do that
I attach a sample of how to reproduce it, just cd the 'issue' folder and run the 'issue.sh' to reproduce the error. You must have Xcode (12.x preferred) tu run it
https://drive.google.com/file/d/1j0TvMZI2A7QxRbv_Q7aydtlNYaiTPYBm/view?usp=sharing
This is what the issue.sh contains, that is a reduced version of my real implementation:
echo "clang..."
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -x objective-c \
-target arm64-apple-ios12.0 \
-fobjc-arc -fmodules \
-S -Os -flto=thin \
-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS14.1.sdk \
-fembed-bitcode \
-c ${PWD}/GTMSessionFetcher.m \
-o ${PWD}/GTMSessionFetcher.ll
echo "llc..."
${PWD}/llc \
GTMSessionFetcher.ll \
-stats -filetype=obj \
-code-model=small \
-enable-machine-outliner=never \
--mtriple=arm64-apple-ios12.0 \
-o ${PWD}/GTMSessionFetcher.o
As I mentioned before, if you change -Os for -O0, the error disappears, but I do need the size optimization.
The objective-c file that I included is a file from a pod from a Google library
https://github.com/google/gtm-session-fetcher
I found a similar question, but it doesn't have any answer yet
LLVM Error Cannot select intrinsic %llvm.coro.begin
I thought it was bug, but it wasn't
As Akira pointed me in LLVM bug report I was able to fix it by adding an intermediate optimizer OPT step with -objc-arc-contract flag:
clang
...
<path to your LLVM tools>/OPT \
<Your IR file> \
-objc-arc-contract \
-o <Output file>
llc
...
I try to build LLVM.
This is the way I try …
mkdir -p src/llvm-$(LLVM_VERSION).src/build
cd src/llvm-$(LLVM_VERSION).src/build && \
$(CMAKE) -GNinja \
-DCMAKE_INSTALL_PREFIX=$(BUNDLE) \
-DCMAKE_CXX_FLAGS="-D_GLIBCXX_USE_CXX11_ABI=0 -std=c++11 -static-libgcc -static-libstdc++ -l:libstdc++.a" \
-DLLVM_TARGETS_TO_BUILD="X86;NVPTX" \
-DLLVM_PARALLEL_COMPILE_JOBS=$(BUILD_JOBS) \
-DLLVM_PARALLEL_LINK_JOBS=2 \
-DLLVM_USE_CRT_RELEASE=MD \
-DLLVM_USE_CRT_DEBUG=MDd \
-DLLVM_STATIC=ON \
-DLLVM_INCLUDE_TESTS=OFF \
-DLLVM_INCLUDE_EXAMPLES=OFF \
-DLLVM_BUILD_LLVM_C_DYLIB=OFF \
-DLLVM_ENABLE_TERMINFO=OFF \
-DLLVM_ENABLE_UNWIND_TABLES=OFF \
-DLLVM_ENABLE_RTTI=ON \
.. && \
$(CMAKE) --build . && \
$(CMAKE) --build . --target install
You can see -D_GLIBCXX_USE_CXX11_ABI=0 in -DCMAKE_CXX_FLAGS. After LLVM finished compiling, libLLVM*.a still contain abi:cxx11 symbols.
llvm-config reveals, llvm build process completely ignored "-D_GLIBCXX_USE_CXX11_ABI=0" flag.
> ./bundle/bin/llvm-config --cxxflags
-I/home/leonard/Documents/Develop/build_as_deps/bundle/include -std=c++11 -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -D_GNU_SOURCE -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
Do you have an idea how to build llvm in a way that disables abi:cxx11 symbols and prevents "-D_GLIBCXX_USE_CXX11_ABI=0" to be overridden?
It looks like you're confusing the cmake options (which are specified with via -D) with C/C++ compiler macro (which are also specified via -D, but to compiler). cmake happily ignored your -D_GLIBCXX_USE_CXX11_ABI, because it's not a cmake option (and you should see a warning about this, that the value is unused by the build system).
Since you need to add extra macro definition, you'd need to change CMAKE_CXX_FLAGS cmake variable.
I want to run objective-c under GNU through Windows.
Say I want to compile hello.m saved under GNUstep/myfolder/, while the compiler gcc.exe is stored in GNUstep/bin/.
Under the path GNUstep/myfolder/, I wrote a file like this:
#!/bin/bash
if [ $# -ne 1 ]; then
echo "Usage: $0 name"
exit 1
fi
../../mingw/bin/gcc.exe -o $i $i.m \
-fconstant-string-class=NSConstantString \
-I ../../GNUstep/System/Library/Headers/ \
-L ../../GNUstep/System/Library/Libraries/ \
-lobjc -fobjc-exceptions -lgnustep-base \
-enable-auto-import
exit 0
And I make the file executable using chmod u+x;
Then I do $ sh run.sh hello, and get output as
F:/GNU/GNUstep/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../libmingw32.a(main.o):main.c:(.text+0xbd): undefined reference to `_WinMain#16'
collect2: ld returned 1 exit status
But if I type the main body written in the bash file, the hello.m could be compiled.
How should I compile without typing the crazy long sentence each time?
It's quite easy to get clang++ to use GCC's libstdc++ (-stdlib=stdc++), but how can I do the converse? On OS X Mavericks, the c++ system library is libc++, which means that basically libstdc++ cannot be used (if you mix with other c++ libraries such as boost that have been compiled with libc++). So, roughly, that means G++ is not usable... Unless I can ask it to use libc++ rather than libstdc++.
Thanks.
The script I use (EDIT)
I'm using the following script, g++-libc++, to run g++ on top of libc++, on Mac OS X with MacPorts (hence the -mp names.
#! /bin/sh
clangxx=clang++-mp-3.5
gxx=g++-mp-4.9
libcxx_includes=$($clangxx -print-search-dirs |
perl -ne 's{^libraries: =(.*)}{$1/../../../} && print')
exec $gxx -std=c++11 \
-isystem ${libcxx_includes}/include/c++/v1 \
-nostdinc++ -nodefaultlibs \
-lc -lc++ -lc++abi -lgcc_s.10.5 \
-Wl,-no_compact_unwind \
"$#"
Something like:
g++ -std=c++0x -nostdinc++ -nodefaultlibs -lc -isystem <path_to>/include/c++/v1 -lc++ -lc++abi -lgcc_s.10.5