libftdi Archives

Subject: Re: Can not compile program on ARMv7 native platform

From: mackowiakp <mackowiakp@xxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Sat, 1 Oct 2016 02:09:23 -0700 (MST)
Sorry for my ignorance, but I just started with libFTDI.
OK. I download ftdi.h from
http://www.intra2net.com/en/developer/libftdi/download.php and place it in
/opt/include. OpenWTR does not provide libftdi1-dev. Now I try to compile
program again using the same compiler command. That is:

gcc -v -Wl,-rpath=/opt/usr/local/lib
-Wl,--dynamic-linker=/opt/lib/ld-linux.so.3 -L/opt/lib -O2 -pipe
-march=armv7-a -mtune=cortex-a9 -fno-caller-saves -mfloat-abi=soft -l ftdi1
d.c -o d

It fails because "/opt/bin/ld: cannot find -lftdi1".

But there is /opt/usr/local/lib/libftdi1.so linked to libftdi1.so.2

My LD_LIBRARY_PATH looks like this:
/lib:/usr/lib:/usr/local/lib:/opt/lib:/opt/usr/lib:/opt/include:/opt/usr/local/lib:/opt/usr/include

So what the problem is?

Below output from compilation process:

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/lto-wrapper
Target: arm-openwrt-linux-gnueabi
Configured with:
/media/ware3/Entware-ng.2016.08/build_dir/target-arm_cortex-a9_glibc-2.23_eabi/gcc-5.4.0/configure
--target=arm-openwrt-linux --host=arm-openwrt-linux --build=x86_64-linux-gnu
--program-prefix= --program-suffix= --prefix=/opt --exec-prefix=/opt
--bindir=/opt/bin --sbindir=/opt/sbin --libexecdir=/opt/lib
--sysconfdir=/opt/etc --datadir=/opt/share --localstatedir=/opt/var
--mandir=/opt/man --infodir=/opt/info --disable-nls --build=x86_64-linux-gnu
--host=arm-openwrt-linux-gnueabi --target=arm-openwrt-linux-gnueabi
--enable-languages=c,c++ --with-bugurl=https://dev.openwrt.org/
--with-pkgversion='OpenWrt GCC 5.4.0' --enable-shared --enable-__cxa_atexit
--with-default-libstdcxx-abi=gcc4-compatible --enable-target-optspace
--with-gnu-ld --with-stage1-ldflags='-Wl,-rpath=/opt/lib
-Wl,--dynamic-linker=/opt/lib/ld-linux.so.3'
--with-boot-ldflags='static-libstdc++ -static-libgcc -Wl,-rpath=/opt/lib
-Wl,--dynamic-linker=/opt/lib/ld-linux.so.3' --disable-nls
--disable-libsanitizer --disable-libvtv --disable-libcilkrts
--disable-libmudflap --disable-multilib --disable-libgomp
--disable-libquadmath --disable-libssp --disable-decimal-float
--disable-libstdcxx-pch --with-host-libstdcxx=-lstdc++ --prefix=/opt
--libexecdir=/opt/lib --with-local-prefix=/opt --with-float=soft
--with-default-libstdcxx-abi=gcc4-compatible
Thread model: posix
gcc version 5.4.0 (OpenWrt GCC 5.4.0) 
COLLECT_GCC_OPTIONS='-v' '-L/opt/lib' '-O2' '-pipe' '-march=armv7-a'
'-mtune=cortex-a9' '-fno-caller-saves' '-mfloat-abi=soft' '-o' 'd'
'-mtls-dialect=gnu'
 /opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/cc1 -quiet -v -imultilib .
-imultiarch arm-linux-gnueabi d.c -quiet -dumpbase d.c -march=armv7-a
-mtune=cortex-a9 -mfloat-abi=soft -mtls-dialect=gnu -auxbase d -O2 -version
-fno-caller-saves -o - |
 as -v -march=armv7-a -mfloat-abi=soft -meabi=5 -o /opt/tmp/ccbT3J1L.o
GNU assembler version 2.26.1 (arm-openwrt-linux-gnueabi) using BFD version
(GNU Binutils) 2.26.1
GNU C11 (OpenWrt GCC 5.4.0) version 5.4.0 (arm-openwrt-linux-gnueabi)
        compiled by GNU C version 5.4.0, GMP version 4.3.2, MPFR version
2.4.2, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=47 --param ggc-min-heapsize=31954
ignoring nonexistent directory "/opt/include/arm-linux-gnueabi"
ignoring nonexistent directory
"/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/../../../../arm-openwrt-linux-gnueabi/include"
ignoring nonexistent directory "/usr/include/arm-linux-gnueabi"
ignoring nonexistent directory "/usr/include"
#include "..." search starts here:
#include <...> search starts here:
 /opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/include
 /opt/include
 /opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/include-fixed
End of search list.
GNU C11 (OpenWrt GCC 5.4.0) version 5.4.0 (arm-openwrt-linux-gnueabi)
        compiled by GNU C version 5.4.0, GMP version 4.3.2, MPFR version
2.4.2, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=47 --param ggc-min-heapsize=31954
Compiler executable checksum: a589712d81e28a1300ccb0e03d994135
d.c: In function 'main':
d.c:4:18: warning: implicit declaration of function 'Sleep'
[-Wimplicit-function-declaration]
 #define sleep(x) Sleep(x)
                  ^
d.c:34:5: note: in expansion of macro 'sleep'
     sleep(3);
     ^
COMPILER_PATH=/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/:/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/:/opt/lib/gcc/arm-openwrt-linux-gnueabi/:/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/:/opt/lib/gcc/arm-openwrt-linux-gnueabi/
LIBRARY_PATH=/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/:/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-L/opt/lib' '-O2' '-pipe' '-march=armv7-a'
'-mtune=cortex-a9' '-fno-caller-saves' '-mfloat-abi=soft' '-o' 'd'
'-mtls-dialect=gnu'
 /opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/collect2 -plugin
/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/liblto_plugin.so
-plugin-opt=/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/lto-wrapper
-plugin-opt=-fresolution=/opt/tmp/cc87OOFR.res
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc
-plugin-opt=-pass-through=-lgcc_s --eh-frame-hdr -dynamic-linker
/lib/ld-linux.so.3 -X -m armelf_linux_eabi -o d
/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/crt1.o
/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/crti.o
/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/crtbegin.o -L/opt/lib
-L/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0
-L/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/../../..
-rpath=/opt/usr/local/lib --dynamic-linker=/opt/lib/ld-linux.so.3 -lftdi1
/opt/tmp/ccbT3J1L.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc
--as-needed -lgcc_s --no-as-needed
/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/crtend.o
/opt/lib/gcc/arm-openwrt-linux-gnueabi/5.4.0/crtn.o
/opt/bin/ld: cannot find -lftdi1
collect2: error: ld returned 1 exit status




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