# C compiler cannot create executables **URL:** \ **Category:** HDF5 Library\ **Created:** [February 9, 2023, 5:32pm UTC](https://forum.hdfgroup.org/t/c-compiler-cannot-create-executables/10815 "2023-02-09T17:32:17Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![mkhodada](https://forum.hdfgroup.org/letter_avatar_proxy/v4/letter/m/7c8e57/32.png) [@mkhodada](https://forum.hdfgroup.org/u/mkhodada)\ **Post date:** [February 9, 2023, 5:32pm UTC](https://forum.hdfgroup.org/t/c-compiler-cannot-create-executables/10815/1 "2023-02-09T17:32:18Z")
Hello everyone, I am trying to install HDF5 (1.14.0) on Ubuntu 22.04 (intel) system with the following command (enabling the parallel and using mpi): ./configure CC=mpicc FC=mpif90 --prefix="/home/user/PHDF5PATH" --enable-fortran --enable-parallel but I got error: C compiler cannot create executables, when I looked at the log file the error starts as soon as ‘-V’ and ‘-qversion’ did not recognized for the mpicc and gcc and resulted in fatal error. Following you can see part of log file that encounters the errors: gcc version 11.3.0 (Ubuntu 11.3.0-1ubuntu1~22.04) … rest of stderr output deleted … configure:4839: $? = 0 configure:4828: mpicc -V \>&5 gcc: error: unrecognized command-line option ‘-V’ gcc: fatal error: no input files compilation terminated. configure:4839: $? = 1 configure:4828: mpicc -qversion \>&5 gcc: error: unrecognized command-line option ‘-qversion’; did you mean ‘–version’? gcc: fatal error: no input files compilation terminated. configure:4839: $? = 1 configure:4859: checking whether the C compiler works configure:4881: mpicc /home/user/OMPIPATH/include/ /home/user/OMPIPATH/include/ /home/user/OMPIPATH/lib/ conftest.c \>&5 /usr/bin/ld: cannot find /home/user/OMPIPATH/include/: file format not recognized /usr/bin/ld: cannot find /home/user/OMPIPATH/include/: file format not recognized /usr/bin/ld: cannot find /home/user/OMPIPATH/lib/: file format not recognized collect2: error: ld returned 1 exit status configure:4885: $? = 1 configure:4923: result: no ---
**Author:** ![dave.allured](https://forum.hdfgroup.org/letter_avatar_proxy/v4/letter/d/8e8cbc/32.png) [@dave.allured](https://forum.hdfgroup.org/u/dave.allured)\ **Post date:** [February 9, 2023, 7:04pm UTC](https://forum.hdfgroup.org/t/c-compiler-cannot-create-executables/10815/2 "2023-02-09T19:04:31Z")
This sounds like a recent known problem with Intel compilers. Do you have config.log? Does it contain “cannot find -loopopt”? If not, then please post config.log and full console output, as text file attachments (not in message body). ---
**Author:** ![mkhodada](https://forum.hdfgroup.org/letter_avatar_proxy/v4/letter/m/7c8e57/32.png) [@mkhodada](https://forum.hdfgroup.org/u/mkhodada)\ **Post date:** [February 9, 2023, 10:49pm UTC](https://forum.hdfgroup.org/t/c-compiler-cannot-create-executables/10815/3 "2023-02-09T22:49:43Z")
Hello Dave, Thank you for your reply, there is no “cannot find -loopopt” in the log file. Of course, I have attached the log file and console output. [config.log](https://hdf-discourse-1.s3.amazonaws.com/original/2X/b/b8db545a19246887acdf714364abed373cb6cc62.log) (37.8 KB) [output.txt](https://hdf-discourse-1.s3.amazonaws.com/original/2X/f/f6cd8a96a7cac7f3767b3f9398d39c8b1fc7ef6b.txt) (1.4 KB) ---
**Author:** ![dave.allured](https://forum.hdfgroup.org/letter_avatar_proxy/v4/letter/d/8e8cbc/32.png) [@dave.allured](https://forum.hdfgroup.org/u/dave.allured)\ **Post date:** [February 10, 2023, 1:39am UTC](https://forum.hdfgroup.org/t/c-compiler-cannot-create-executables/10815/4 "2023-02-10T01:39:26Z")
> [@mkhodada](#): > > Of course, I have attached the log file and console output. > [config.log](https://dbkt.hdfgroup.org/original/2X/b/b8db545a19246887acdf714364abed373cb6cc62.log) (37.8 KB) > [output.txt](https://dbkt.hdfgroup.org/original/2X/f/f6cd8a96a7cac7f3767b3f9398d39c8b1fc7ef6b.txt) (1.4 KB) Thanks. My first guess was wrong, this has nothing to do with Intel. In config.log lines 103-156, these settings don’t seem right. These should be compiler option strings, not simple paths with no options in front of them such as -I or -L. This is causing the compile failure at line 1042. > CFLAGS=/home/maryam/OMPIPATH/include/ > CPPFLAGS=/home/maryam/OMPIPATH/include/ > FFLAGS=/home/maryam/OMPIPATH/include/ > LDFLAGS=/home/maryam/OMPIPATH/lib/ If you have set these in your environment before “configure”, try unsetting them, and run configure again. You might also need to keep these paths but put -I in front of the include paths, and -L in front of the lib path, to correctly build HDF5 parallel. ---
**Author:** ![mkhodada](https://forum.hdfgroup.org/letter_avatar_proxy/v4/letter/m/7c8e57/32.png) [@mkhodada](https://forum.hdfgroup.org/u/mkhodada)\ **Post date:** [February 10, 2023, 2:43am UTC](https://forum.hdfgroup.org/t/c-compiler-cannot-create-executables/10815/5 "2023-02-10T02:43:54Z")
Yes I have set them in .bashrc file so the correct path would be like following? > export CFLAGS=“/home/maryam/OMPIPATH/include/ -I” I have attached my .bashrc related lines too. [bash-lines.txt](https://hdf-discourse-1.s3.amazonaws.com/original/2X/5/510bd4a8173d88177325e75816f040fed615fe85.txt) (397 Bytes) ---
**Author:** ![dave.allured](https://forum.hdfgroup.org/letter_avatar_proxy/v4/letter/d/8e8cbc/32.png) [@dave.allured](https://forum.hdfgroup.org/u/dave.allured)\ **Post date:** [February 10, 2023, 3:20am UTC](https://forum.hdfgroup.org/t/c-compiler-cannot-create-executables/10815/6 "2023-02-10T03:20:23Z")
> [@mkhodada](#): > > export CFLAGS=“/home/maryam/OMPIPATH/include/ -I” No. Like this: > export CFLAGS=“-I /home/maryam/OMPIPATH/include/” > export CPPFLAGS=“-I /home/maryam/OMPIPATH/include/” > export FFLAGS=“-I /home/maryam/OMPIPATH/include/” > export LDFLAGS=“-L /home/maryam/OMPIPATH/lib/” If that doesn’t work, just try setting all four to blank. Actually, try that first. This depends on the requirements of your mpicc installation, which I do not understand. For more details on the use of FLAGS variables, please see part 4.3.6 in hdf5-1.14.0/release\_docs/INSTALL. ---
**Author:** ![mkhodada](https://forum.hdfgroup.org/letter_avatar_proxy/v4/letter/m/7c8e57/32.png) [@mkhodada](https://forum.hdfgroup.org/u/mkhodada)\ **Post date:** [February 10, 2023, 2:22pm UTC](https://forum.hdfgroup.org/t/c-compiler-cannot-create-executables/10815/8 "2023-02-10T14:22:17Z")
Thank you, I am reviewing the release doc now, but by setting to blank or using -I -L in front of the path both result in following error: ``` configure: error: Fortran could not compile .f90 files ``` which is the case that I am not sure with following command (using mpi and parallel installing), what path for F77, F90 or any other fortran prefix I have to set in .bashrc. ``` ./configure CC=mpicc FC=mpif90 --prefix="/home/maryam/PHDF5PATH" --enable-fortran --enable-parallel ``` Here is new log file [config.log](https://hdf-discourse-1.s3.amazonaws.com/original/2X/f/f968388f8f0858087351f1770f16d1901f429347.log) (58.4 KB) ---
**Author:** ![dave.allured](https://forum.hdfgroup.org/letter_avatar_proxy/v4/letter/d/8e8cbc/32.png) [@dave.allured](https://forum.hdfgroup.org/u/dave.allured)\ **Post date:** [February 10, 2023, 7:45pm UTC](https://forum.hdfgroup.org/t/c-compiler-cannot-create-executables/10815/9 "2023-02-10T19:45:13Z")
Good, the C compiler problem is solved. Now it looks like there is a problem with your fortran compiler. ``` configure:6857: mpif90 --version >&5 -------------------------------------------------------------------------- No underlying compiler was specified in the wrapper compiler data file (e.g., mpicc-wrapper-data.txt) -------------------------------------------------------------------------- ``` If you do not need fortran, the simplest solution would be to remove “–enable-fortran”, and make a C-only, parallel build. If you _do_ need fortran, then this looks like a configuration problem with the fortran compiler itself, not HDF5. Please confirm that you can compile a simple fortran program such as Hello World, with mpif90. ---
**Author:** ![mkhodada](https://forum.hdfgroup.org/letter_avatar_proxy/v4/letter/m/7c8e57/32.png) [@mkhodada](https://forum.hdfgroup.org/u/mkhodada)\ **Post date:** [February 11, 2023, 1:42am UTC](https://forum.hdfgroup.org/t/c-compiler-cannot-create-executables/10815/10 "2023-02-11T01:42:19Z")
Thank you in advance Dave. Yes it seemed the mpi did not install by fortran correctly. It solved my problem. I appreciate your time and help. Bests, Maryam