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Add LFortran as compiler to build options #100

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7 changes: 6 additions & 1 deletion cmake/SetBuildOptions.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -12,12 +12,12 @@ endif()

# Check if MPI is present. This should succeed if
# the compilers were set to mpifort and mpicc.
find_package(MPI REQUIRED)

# Set default compiler = GNU if none was specified.
if(NOT COMPILER)
set(COMPILER "${CMAKE_Fortran_COMPILER_ID}" CACHE STRING "Choose compiler toolchain." FORCE)
set_property(CACHE COMPILER PROPERTY STRINGS "GNU" "Intel")
set_property(CACHE COMPILER PROPERTY STRINGS "GNU" "Intel" "LFortran")
endif()

# Set compiler specific flags.
Expand All @@ -44,6 +44,11 @@ elseif(COMPILER STREQUAL "Intel" OR COMPILER STREQUAL "IntelLLVM")
set(CMAKE_Fortran_FLAGS_DEBUG "-O0 -g -fpe0 -check all")
endif()
set(CMAKE_Fortran_FLAGS_RELEASE "-O2 -debug minimal")
elseif(COMPILER STREQUAL "LFortran")
add_compile_definitions(CPRLFORTRAN)
# There is an issue, some modules require --cpp as a flag in their compilation
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@kvrigor kvrigor Jan 23, 2026

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please add a comment that shows the link to #98

# some flat out break, if we put --cpp
# set(CMAKE_Fortran_FLAGS "--cpp")
else()
message(FATAL_ERROR "COMPILER='${COMPILER}' is not supported.")
endif()
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2 changes: 1 addition & 1 deletion src/externals/gptl/CMakeLists.txt
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Expand Up @@ -9,7 +9,7 @@ SET(TIMING_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}
CACHE STRING "")
INCLUDE_DIRECTORIES(${TIMING_INCLUDE_DIRS})

ADD_DEFINITIONS(-DINCLUDE_CMAKE_FCI -DHAVE_MPI)
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@kvrigor kvrigor Jan 23, 2026

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Is it necessary to remove -DHAVE_MPI to make LFortran work? This option might be used by other compilers.

ADD_DEFINITIONS(-DINCLUDE_CMAKE_FCI)

SET(SRCS_C GPTLget_memusage.c
GPTLprint_memusage.c
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1 change: 0 additions & 1 deletion src/externals/gptl/Makefile
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Expand Up @@ -32,7 +32,6 @@ ifeq ($(strip $(MPILIB)), mpi-serial)
else
CC := $(MPICC)
FC := $(MPIFC)
CPPDEFS += -DHAVE_MPI
endif
ifdef CPRE
FPPDEFS := $(patsubst -D%,$(CPRE)%,$(CPPDEFS))
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3 changes: 0 additions & 3 deletions src/externals/gptl/perf_utils.F90
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Expand Up @@ -164,9 +164,6 @@ SUBROUTINE shr_sys_flush(unit)
call flush(unit)
#endif
#endif
#if (defined AIX)
call flush_(unit)
#endif
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@kvrigor kvrigor Jan 23, 2026

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I suggest keeping AIX if it's not required to make LFortran work


END SUBROUTINE shr_sys_flush

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