# CMAQ Compiling Issue **URL:** \ **Category:** Compiling\ **Created:** [April 30, 2020, 2:27pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464 "2020-04-30T14:27:47Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [April 30, 2020, 2:27pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/1 "2020-04-30T14:27:47Z")
Hi, I compiled ioapi3.2 with gnu8.1.0 compilers. Now, when I try to compile CMAQ, I run into following error. Let me know if I can provide more information that may help. Thanks $HOME/CMAQ\_install/lib/x86\_64/gcc/ioapi/lib/libioapi.a(wratt3.o): In function `master.0.wratt3\_’: wratt3.F90:(.text+0x646): undefined reference to `GOMP\_critical\_name\_start’ wratt3.F90:(.text+0x6c6): undefined reference to `GOMP\_critical\_name\_end’ wratt3.F90:(.text+0xa47): undefined reference to `GOMP\_critical\_name\_end’ wratt3.F90:(.text+0x12de): undefined reference to `GOMP\_critical\_name\_end’ collect2: error: ld returned 1 exit status make: \*\*\* [CCTM\_v531.exe] Error 1 **ERROR** while running make command mv Makefile Makefile.gcc if ( -e Makefile.gcc && -e Makefile ) rm Makefile ln -s Makefile.gcc Makefile if ( 0 != 0 ) then if ( -e $HOME/CMAQ\_install/CCTM/scripts/BLD\_CCTM\_v531\_gcc/CCTM\_v531.cfg ) then mv CCTM\_v531.cfg.bld $HOME/CMAQ\_install/CCTM/scripts/BLD\_CCTM\_v531\_gcc/CCTM\_v531.cfg exit ---
**Author:** ![cjcoats](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@cjcoats](https://forum.cmascenter.org/u/cjcoats)\ **Post date:** [April 30, 2020, 3:57pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/2 "2020-04-30T15:57:57Z")
Your compile and link flags for CMAQ should include the contents of the `OMPFLAGS` variable from your _ioapi/Makeinclude.$BIN_, in this case,` -fopenmp`. ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 1, 2020, 1:41pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/4 "2020-05-01T13:41:50Z")
Hello, That worked. Now when I try to run the 2016 test case, I get a few errors. I am pasting some parts of the log below. Any help is appreciated ## ln: failed to create symbolic link ‘/home/user/cmaq\_build/CMAQ\_install/lib/x86\_64/gcc/mpi’: File exists ln: failed to create symbolic link ‘/home/user/cmaq\_build/CMAQ\_install/lib/x86\_64/gcc/mpi/centos7.5\_gnu8.1.0’: Permission denied ln: failed to create symbolic link ‘/home/user/cmaq\_build/CMAQ\_install/lib/x86\_64/gcc/mpi’: File exists ln: failed to create symbolic link ‘/home/user/cmaq\_build/CMAQ\_install/lib/x86\_64/gcc/mpi’: File exists ln: failed to create symbolic link ‘/home/user/cmaq\_build/CMAQ\_install/lib/x86\_64/gcc/mpi’: File exists . . . . An ORTE daemon has unexpectedly failed after launch and before communicating back to mpirun. This could be caused by a number of factors, including an inability to create a connection back to mpirun due to a lack of common network interfaces and/or no route found between them. Please check network connectivity (including firewalls and network routing requirements). . . . . . . ln: cannot remove ‘/home/user/cmaq\_build/CMAQ\_install/lib/x86\_64/gcc/netcdff/includ’: No such file or directory ln: cannot remove ‘/home/user/cmaq\_build/CMAQ\_install/lib/x86\_64/gcc/netcdff/includ’: No such file or directory ln: cannot remove ‘/home/user/cmaq\_build/CMAQ\_install/lib/x86\_64/gcc/netcdff/includ’: No such file or directory ---
**Author:** ![cjcoats](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@cjcoats](https://forum.cmascenter.org/u/cjcoats)\ **Post date:** [May 1, 2020, 2:11pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/5 "2020-05-01T14:11:07Z")
This looks like a spelling error: _includ_ should probably be _include_ ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 1, 2020, 2:24pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/6 "2020-05-01T14:24:21Z")
Could it be character length issue given the path is long? ---
**Author:** ![cjcoats](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@cjcoats](https://forum.cmascenter.org/u/cjcoats)\ **Post date:** [May 1, 2020, 2:41pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/7 "2020-05-01T14:41:53Z")
You might try going to the _BLD…_ directory and seeing if you can fix the _Makefile_ by hand. ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 1, 2020, 7:26pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/8 "2020-05-01T19:26:24Z")
Thanks. Now, I am getting another error. It looks like a memory related issue. However, I am requesting for enough memory I think. For testing, I am running on a single node with 32 CPUS (requesting \>100gb memory) and I use srun to run the job. Thanks so much for your help. [1588360333.428623] [or-condo-c44:101973:0] ib\_md.c:1758 UCX ERROR ibv\_open\_device(mlx4\_0) failed: Cannot allocate memory [1588360333.431491] [or-condo-c44:101684:0] ib\_md.c:1758 UCX ERROR ibv\_open\_device(mlx4\_0) failed: Cannot allocate memory [1588360333.443975] [or-condo-c44:101576:0] ib\_md.c:1758 UCX ERROR ibv\_open\_device(mlx4\_0) failed: Cannot allocate memory ``` ***ERROR in INIT3/INITLOG3*** Error opening log file on unit 99 I/O STATUS = 17 File: CTM_LOG_000.v531_gcc_Bench_2016_12SE1_20160701 ``` * * * ## Primary job terminated normally, but 1 process returned a non-zero exit code. Per user-direction, the job has been aborted. * * * mpirun detected that one or more processes exited with non-zero status, thus causing the job to be terminated. The first process to do so was: Process name: [[22616,1],15] Exit code: 2 ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 2, 2020, 4:03am UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/9 "2020-05-02T04:03:02Z")
I checked one of the cctm.log file and it has the following error. The MET\_CRO\_3D file looks fine under the input Met path. The variable in the netcdf file is “TFLAG” and not “FLAG”. This is in the 2016 SE test case input. That could be the issue. Have you seen this before? Any suggestions will be helpful. Thanks so much for all the help! ioapi-3.2: Id: init3.F90 150 2020-04-11 17:51:44Z coats Version with PARMS3.EXT/PARAMETER::MXVARS3= 2048 netCDF version 4.6.1 of Sep 8 2018 14:57:57 $ ``` EXECUTION_ID: CMAQ_CCTMv531_dry_20200502_035708_452510341 Error reading file attribute FLAG netCDF error number -49 processing file "MET_CRO_3D" NetCDF: Variable not found *** ERROR ABORT in subroutine RUNTIME_VARS Could not open MET_CRO_3D file ``` ---
**Author:** ![cjcoats](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@cjcoats](https://forum.cmascenter.org/u/cjcoats)\ **Post date:** [May 2, 2020, 11:11am UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/10 "2020-05-02T11:11:30Z")
This is a malformed input file: this message happens only for files of type DCTNRY3 = 0 and a properly formed MET\_CRO\_3D should be of type GRDDED3 = 1. Did the script that caused this file to be created ignore exit-failure for the program that created it? ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 4, 2020, 8:27pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/11 "2020-05-04T20:27:32Z")
Thank you for your response. I am running the 2016 SE test case. So, I downloaded this input file from CMAQ drive. [https://drive.google.com/drive/folders/10wFNch1MkI49ZjD2XD6wK2xzDWOav2zY](https://drive.google.com/drive/folders/10wFNch1MkI49ZjD2XD6wK2xzDWOav2zY) ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 6, 2020, 12:54pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/12 "2020-05-06T12:54:57Z")
Hi, Do you have any suggestions that I can try to fix this issue. Thank you. ---
**Author:** ![cjcoats](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@cjcoats](https://forum.cmascenter.org/u/cjcoats)\ **Post date:** [May 6, 2020, 1:29pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/13 "2020-05-06T13:29:33Z")
What does _ncdump -h_ say about this file? If it shows `FTYPE = 1` then you have a corrupted build, in which case you should re-build everything – loibraries and model – from scratch (making sure that the `INCLUDE`-files all match (you haven’t been changing any of the `INCLUDE`-files, have you?)). ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 6, 2020, 5:58pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/14 "2020-05-06T17:58:56Z")
Thanks for your response. I am not changing any INCLUDE-files. I re-build everything again. Same problem persists. I am using pre installed netcdf/4.6.1 libraries. Could the problem be related to that? Any idea! Again appreciate your help! ---
**Author:** ![cjcoats](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@cjcoats](https://forum.cmascenter.org/u/cjcoats)\ **Post date:** [May 6, 2020, 10:55pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/15 "2020-05-06T22:55:06Z")
What does ncdump -h say about this file? ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 6, 2020, 11:16pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/16 "2020-05-06T23:16:46Z")
ncdump -h METCRO2D\_160701.nc netcdf METCRO2D\_160701 { dimensions: TSTEP = UNLIMITED ; // (25 currently) DATE-TIME = 2 ; LAY = 1 ; VAR = 35 ; ROW = 80 ; COL = 100 ; variables: int TFLAG(TSTEP, VAR, DATE-TIME) ; TFLAG:units = “\” ; TFLAG:long\_name = "TFLAG " ; TFLAG:var\_desc = "Timestep-valid flags: (1) YYYYDDD or (2) HHMMSS " ; float PRSFC(TSTEP, LAY, ROW, COL) ; PRSFC:long\_name = "PRSFC " ; PRSFC:units = "Pa " ; PRSFC:var\_desc = "surface pressure " ; float USTAR(TSTEP, LAY, ROW, COL) ; USTAR:long\_name = "USTAR " ; USTAR:units = "m s-1 " ; USTAR:var\_desc = "cell averaged friction velocity " ; float WSTAR(TSTEP, LAY, ROW, COL) ; WSTAR:long\_name = "WSTAR " ; WSTAR:units = "m s-1 " ; WSTAR:var\_desc = "convective velocity scale " ; float PBL(TSTEP, LAY, ROW, COL) ; PBL:long\_name = "PBL " ; PBL:units = "m " ; PBL:var\_desc = "PBL height " ; float ZRUF(TSTEP, LAY, ROW, COL) ; ZRUF:long\_name = "ZRUF " ; ZRUF:units = "m " ; ZRUF:var\_desc = "surface roughness length " ; float MOLI(TSTEP, LAY, ROW, COL) ; MOLI:long\_name = "MOLI " ; MOLI:units = "m-1 " ; MOLI:var\_desc = "inverse of Monin-Obukhov length " ; float HFX(TSTEP, LAY, ROW, COL) ; HFX:long\_name = "HFX " ; HFX:units = "W m-2 " ; HFX:var\_desc = "sensible heat flux " ; float LH(TSTEP, LAY, ROW, COL) ; LH:long\_name = "LH " ; LH:units = "W m-2 " ; LH:var\_desc = "latent heat flux " ; float RADYNI(TSTEP, LAY, ROW, COL) ; RADYNI:long\_name = "RADYNI " ; RADYNI:units = "m s-1 " ; RADYNI:var\_desc = "inverse of aerodynamic resistance " ; float RSTOMI(TSTEP, LAY, ROW, COL) ; RSTOMI:long\_name = "RSTOMI " ; RSTOMI:units = "m s-1 " ; RSTOMI:var\_desc = "inverse of stomatic resistance " ; float TEMPG(TSTEP, LAY, ROW, COL) ; TEMPG:long\_name = "TEMPG " ; TEMPG:units = "K " ; TEMPG:var\_desc = "skin temperature at ground " ; float TEMP2(TSTEP, LAY, ROW, COL) ; TEMP2:long\_name = "TEMP2 " ; TEMP2:units = "K " ; TEMP2:var\_desc = "temperature at 2 m " ; float Q2(TSTEP, LAY, ROW, COL) ; Q2:long\_name = "Q2 " ; Q2:units = "kg kg-1 " ; Q2:var\_desc = "mixing ratio at 2 m " ; float WSPD10(TSTEP, LAY, ROW, COL) ; WSPD10:long\_name = "WSPD10 " ; WSPD10:units = "m s-1 " ; WSPD10:var\_desc = "wind speed at 10 m " ; float WDIR10(TSTEP, LAY, ROW, COL) ; WDIR10:long\_name = "WDIR10 " ; WDIR10:units = "degree " ; WDIR10:var\_desc = "wind direction at 10 m " ; float GLW(TSTEP, LAY, ROW, COL) ; GLW:long\_name = "GLW " ; GLW:units = "W m-2 " ; GLW:var\_desc = "longwave radiation at ground " ; float GSW(TSTEP, LAY, ROW, COL) ; GSW:long\_name = "GSW " ; GSW:units = "W m-2 " ; GSW:var\_desc = "solar radiation absorbed at ground " ; float RGRND(TSTEP, LAY, ROW, COL) ; RGRND:long\_name = "RGRND " ; RGRND:units = "W m-2 " ; RGRND:var\_desc = "solar radiation reaching ground " ; float RN(TSTEP, LAY, ROW, COL) ; RN:long\_name = "RN " ; RN:units = "cm " ; RN:var\_desc = "nonconvective precipitation in interval " ; float RC(TSTEP, LAY, ROW, COL) ; RC:long\_name = "RC " ; RC:units = "cm " ; RC:var\_desc = "convective precipitation in interval " ; float CFRAC(TSTEP, LAY, ROW, COL) ; CFRAC:long\_name = "CFRAC " ; CFRAC:units = "1 " ; CFRAC:var\_desc = "total cloud fraction " ; float CLDT(TSTEP, LAY, ROW, COL) ; CLDT:long\_name = "CLDT " ; CLDT:units = "m " ; CLDT:var\_desc = "cloud top layer height " ; float CLDB(TSTEP, LAY, ROW, COL) ; CLDB:long\_name = "CLDB " ; CLDB:units = "m " ; CLDB:var\_desc = "cloud bottom layer height " ; float WBAR(TSTEP, LAY, ROW, COL) ; WBAR:long\_name = "WBAR " ; WBAR:units = "g m-3 " ; WBAR:var\_desc = "average liquid water content of cloud " ; float SNOCOV(TSTEP, LAY, ROW, COL) ; SNOCOV:long\_name = "SNOCOV " ; SNOCOV:units = "1 " ; SNOCOV:var\_desc = "snow cover " ; float VEG(TSTEP, LAY, ROW, COL) ; VEG:long\_name = "VEG " ; VEG:units = "1 " ; VEG:var\_desc = "vegetation coverage " ; float LAI(TSTEP, LAY, ROW, COL) ; LAI:long\_name = "LAI " ; LAI:units = "m2 m-2 " ; LAI:var\_desc = "leaf-area index " ; float SEAICE(TSTEP, LAY, ROW, COL) ; SEAICE:long\_name = "SEAICE " ; SEAICE:units = "1 " ; SEAICE:var\_desc = "sea ice " ; float SNOWH(TSTEP, LAY, ROW, COL) ; SNOWH:long\_name = "SNOWH " ; SNOWH:units = "m " ; SNOWH:var\_desc = "snow height " ; float WR(TSTEP, LAY, ROW, COL) ; WR:long\_name = "WR " ; WR:units = "m " ; WR:var\_desc = "canopy moisture content " ; float SOIM1(TSTEP, LAY, ROW, COL) ; SOIM1:long\_name = "SOIM1 " ; SOIM1:units = "m3 m-3 " ; SOIM1:var\_desc = "volumetric soil moisture in top cm " ; float SOIM2(TSTEP, LAY, ROW, COL) ; SOIM2:long\_name = "SOIM2 " ; SOIM2:units = "m3 m-3 " ; SOIM2:var\_desc = "volumetric soil moisture in top m " ; float SOIT1(TSTEP, LAY, ROW, COL) ; SOIT1:long\_name = "SOIT1 " ; SOIT1:units = "K " ; SOIT1:var\_desc = "soil temperature in top cm " ; float SOIT2(TSTEP, LAY, ROW, COL) ; SOIT2:long\_name = "SOIT2 " ; SOIT2:units = "K " ; SOIT2:var\_desc = "soil temperature in top m " ; float SLTYP(TSTEP, LAY, ROW, COL) ; SLTYP:long\_name = "SLTYP " ; SLTYP:units = "1 " ; SLTYP:var\_desc = "soil texture type by USDA category " ; // global attributes: :IOAPI\_VERSION = "ioapi-3.2: Id: init3.F90 98 2018-04-05 14:35:07Z coats " ; :EXEC\_ID = "mcip " ; :FTYPE = 1 ; :CDATE = 2019357 ; :CTIME = 150547 ; :WDATE = 2019357 ; :WTIME = 150547 ; :SDATE = 2016183 ; :STIME = 0 ; :TSTEP = 10000 ; :NTHIK = 1 ; :NCOLS = 100 ; :NROWS = 80 ; :NLAYS = 1 ; :NVARS = 35 ; :GDTYP = 2 ; :P\_ALP = 33. ; :P\_BET = 45. ; :P\_GAM = -97. ; :XCENT = -97. ; :YCENT = 40. ; :XORIG = 792000. ; :YORIG = -1080000. ; :XCELL = 12000. ; :YCELL = 12000. ; :VGTYP = 7 ; :VGTOP = 5000.f ; :VGLVLS = 1.f, 0.9975f ; :GDNAM = “2016\_12SE1\_CROSS” ; :UPNAM = "OUTCM3IO " ; :VAR-LIST = "PRSFC USTAR WSTAR PBL ZRUF MOLI HFX LH RADYNI RSTOMI TEMPG TEMP2 Q2 WSPD10 WDIR10 GLW GSW RGRND RN RC CFRAC CLDT CLDB WBAR SNOCOV VEG LAI SEAICE SNOWH WR SOIM1 SOIM2 SOIT1 SOIT2 SLTYP " ; :FILEDESC = "US EPA COMMUNITY MULTISCALE AIR QUALITY MODEL METEOROLOGY-CHEMISTRY INTERFACE PROCESSOR MCIP V5.1 FROZEN 11/21/2019 INPUT METEOROLOGY DATA FROM WRF ARW V3.8 INPUT RUN INITIALIZED: 2015-12-21-00:00:00.0000 CUMULUS PARAMETERIZATION: KF with radiative feedback SHALLOW CONVECTION: No shallow convection MICROPHYSICS: Morrison 2-moment LONGWAVE RADIATION: RRTMg SHORTWAVE RADIATION: RRTMg PBL SCHEME: ACM2 (Pleim) SURFACE LAYER SCHEME: Pleim LAND-SURFACE SCHEME: Pleim-Xiu Land-Surface Model URBAN MODEL: No urban physics LAND USE CLASSIFICATION: NLCD40 3D ANALYSIS NUDGING: GRID WIND COEFF: 1.000E-04 s-1 TEMP COEFF: 1.000E-04 s-1 MOIS COEFF: 1.000E-05 s-1 GEOP COEFF: not applicable SFC ANALYSIS NUDGING: STANDARD WIND COEFF: 0.000E+00 s-1 TEMP COEFF: 0.000E+00 s-1 MOIS COEFF: 0.000E+00 s-1 OBS NUDGING: OFF WIND COEFF: not applicable TEMP COEFF: not applicable MOIS COEFF: not applicable EARTH RADIUS ASSUMED IN MCIP: 6370000.000 m " ; :HISTORY = “” ; } ---
**Author:** ![cjcoats](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@cjcoats](https://forum.cmascenter.org/u/cjcoats)\ **Post date:** [May 6, 2020, 11:23pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/17 "2020-05-06T23:23:09Z")
So _ncdump_ says FTYPE=1 (as it should be). However, your I/O API OPEN3 call thinks FTYPE=0. This says some part of your CMAQ or I/O API installation is corrupted. ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 7, 2020, 12:56am UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/18 "2020-05-07T00:56:49Z")
Thanks. The executables look fine. I could not locate any error in the build log file either. So, not sure what’s happening. Any suggestions on debugging this? Thank you! ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 8, 2020, 4:19am UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/19 "2020-05-08T04:19:55Z")
Hi, Just want to mention the issue was due to the version of netcdf I was using. Now, the test case is running. Thank you. ---
**Author:** ![cjcoats](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@cjcoats](https://forum.cmascenter.org/u/cjcoats)\ **Post date:** [May 8, 2020, 11:18am UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/20 "2020-05-08T11:18:04Z")
Would you tell us which netCDF version had problems? – and then I’ll put it into the I/O API Troubleshooting page [https://cjcoats.github.io/ioapi/ERRORS.html](https://cjcoats.github.io/ioapi/ERRORS.html), and credit you for it. – Carlie ---
**Author:** ![deeksha](https://avatars.discourse-cdn.com/v4/letter/d/4da419/32.png) [@deeksha](https://forum.cmascenter.org/u/deeksha)\ **Post date:** [May 8, 2020, 3:48pm UTC](https://forum.cmascenter.org/t/cmaq-compiling-issue/1464/21 "2020-05-08T15:48:47Z")
Sure. I was using preinstalled netcdf/4.6.1 that has zlib and HDF5 support, which was causing the above error. Switching to netcdf-c-4.7.4 and netcdf-fortran-4.5.2 fixed it.