Hi, I am just trying to build the lowrisc on my Ubuntu 14.04. But when I tried to build the RISC-V tools as in [1]. I got the following error. I have attached the config.log file here. Same thing worked fine in my Ubuntu 16.04. But I am trying to use regular flow. Is this something relate to my gcc version?. Error: Configuring project riscv-fesvr configure: error: in `/home/mahesh/paraqum/repos/lowrisc/lowrisc-chip/riscv-tools/riscv-fesvr/build': configure: error: C compiler cannot create executables See `config.log' for more details I appreciate any advice to fix this. Thanks in advance. [1]http://www.lowrisc.org/docs/untether-v0.2/riscv_compile/

According to the config.log file forwarded to me by Jonathan, I think there is some env setting issues on your computer. Especially these lines in the config.log are problematic: configure:2416: gcc _BMV2_ conftest.c >&5 > gcc: error: _BMV2_: No such file or directory > This _BMV2_ comes from your bash environment? ac_cv_env_CPPFLAGS_set=set > ac_cv_env_CPPFLAGS_value=_BMV2_ > Anyway, CPPFLAGS should not be set. What I noticed from the config.log, you have many EDA tools added into the path. Any one of them may set this CPPFLAG which then causes the configuration error. Personal suggestion is to avoid source all EDA scripts in your default bash script. Only source the script if any tool is needed. This type of incompatibility is usually the reason to not do so. -Wei On 13/07/2017 11:18, Mahesh Dananjaya wrote: > Hi, > I am just trying to build the lowrisc on my Ubuntu 14.04. But when I tried > to build the RISC-V tools as in [1]. I got the following error. I have > attached the config.log file here. Same thing worked fine in my Ubuntu > 16.04. But I am trying to use regular flow. Is this something relate to my > gcc version?. > Error: > Configuring project riscv-fesvr > configure: error: in > `/home/mahesh/paraqum/repos/lowrisc/lowrisc-chip/riscv-tools > /riscv-fesvr/build': > configure: error: C compiler cannot create executables > See `config.log' for more details > > I appreciate any advice to fix this. Thanks in advance. > > [1]http://www.lowrisc.org/docs/untether-v0.2/riscv_compile/ >

On 14 Jul 2017, at 09:36, Mahesh Dananjaya <dananjayamahesh(a)gmail.com&gt; wrote: Hi, Now I am trying to compile the linux kernal according to [1]. But get an error at the line make ARCH=riscv -j vmlinux This is what i get. CHK include/config/kernel.release CHK include/generated/uapi/linux/version.h CC scripts/mod/devicetable-offsets.s CHK include/generated/utsrelease.h In file included from include/linux/compiler.h:54:0, from include/uapi/linux/stddef.h:1, from include/linux/stddef.h:4, from /home/mahesh/paraqum/repos/lowrisc/lowrisc-chip/riscv-tools/linux-3.14.41/include/uapi/linux/posix_types.h:4, from include/uapi/linux/types.h:13, from include/linux/types.h:5, from include/linux/mod_devicetable.h:11, from scripts/mod/devicetable-offsets.c:2: include/linux/compiler-gcc.h:106:30: fatal error: linux/compiler-gcc6.h: No such file or directory #include gcc_header(__GNUC__) ^ compilation terminated. make[2]: *** [scripts/mod/devicetable-offsets.s] Error 1 make[1]: *** [scripts/mod] Error 2 make: *** [scripts] Error 2 make: *** Waiting for unfinished jobs.... I have noticed that linux/compiler-gcc6.h is not in the specified folder. I appreciate any information regarding this.Thanks. BR, Mahesh [1] http://www.lowrisc.org/docs/untether-v0.2/linux_compile/ > On Thu, Jul 13, 2017 at 5:00 PM, Mahesh Dananjaya <dananjayamahesh(a)gmail.com&gt; wrote: > Hi Wei, > Thank you very much. It worked. > BR, > Mahesh. > >> On Thu, Jul 13, 2017 at 4:52 PM, Wei Song <ws327(a)cam.ac.uk&gt; wrote: >> According to the config.log file forwarded to me by Jonathan, I think there is some env setting issues on your computer. >> Especially these lines in the config.log are problematic: >> >>> configure:2416: gcc _BMV2_ conftest.c >&5 >>> gcc: error: _BMV2_: No such file or directory >> >> This _BMV2_ comes from your bash environment? >> >>> ac_cv_env_CPPFLAGS_set=set >>> ac_cv_env_CPPFLAGS_value=_BMV2_ >> >> Anyway, CPPFLAGS should not be set. >> >> What I noticed from the config.log, you have many EDA tools added into the path. >> Any one of them may set this CPPFLAG which then causes the configuration error. >> Personal suggestion is to avoid source all EDA scripts in your default bash script. >> Only source the script if any tool is needed. >> This type of incompatibility is usually the reason to not do so. >> >> -Wei >> >> >>> On 13/07/2017 11:18, Mahesh Dananjaya wrote: >> >>> Hi, >>> I am just trying to build the lowrisc on my Ubuntu 14.04. But when I tried >>> to build the RISC-V tools as in [1]. I got the following error. I have >>> attached the config.log file here. Same thing worked fine in my Ubuntu >>> 16.04. But I am trying to use regular flow. Is this something relate to my >>> gcc version?. >>> Error: >>> Configuring project riscv-fesvr >>> configure: error: in >>> `/home/mahesh/paraqum/repos/lowrisc/lowrisc-chip/riscv-tools/riscv-fesvr/build': >>> configure: error: C compiler cannot create executables >>> See `config.log' for more details >>> >>> I appreciate any advice to fix this. Thanks in advance. >>> >>> [1]http://www.lowrisc.org/docs/untether-v0.2/riscv_compile/ >> > > > > -- > > Mahesh Dananjaya > Electronic Engineer | Paraqum Technologies (pvt) ltd, Colombo, Sri Lanka, > email | mahesh(a)paraqum.com > web | www.paraqum.com > Tel | +94717586199 > > Department of Electronic and Telecommunication Engineering > University of Moratuwa > email | 110089(a)uom.lk > web | www.ent.mrt.ac.lk > > > -- Mahesh Dananjaya Electronic Engineer | Paraqum Technologies (pvt) ltd, Colombo, Sri Lanka, email | mahesh(a)paraqum.com web | www.paraqum.com Tel | +94717586199 Department of Electronic and Telecommunication Engineering University of Moratuwa email | 110089(a)uom.lk web | www.ent.mrt.ac.lk