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Simplifcations in FindPetsc logic

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Removes a lot of the conditionals in the makefile. As reflected in the
comments, find_* won't run if the target variable is already set, and appending
empty list elements changes nothing. In order to make reading the file easier
these conditionals have mostly been removed.
This commit is contained in:
Jørgen Kvalsvik 2014-09-19 12:32:50 +02:00
parent 60ca9698ba
commit 48b54d321a
1 changed files with 34 additions and 41 deletions
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41
cmake/Modules/FindPetsc.cmake
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@ -28,35 +28,38 @@ if(PETSC_ROOT)
endif()
# look for a system-wide BLAS library
find_package(BLAS QUIET)
set(PETSC_BLAS_LIBRARY "")
if (BLAS_FOUND)
find_package(BLAS QUIET)
list(APPEND PETSC_BLAS_LIBRARY "${BLAS_LIBRARIES}")
elseif(PETSC_ROOT)
find_library(PETST_BLAS_LIBRARY
# if BLAS wasn't found, look for it in PETSC_ROOT. Won't search if
# PETSC_BLAS_LIBRARY is set.
find_library(PETSC_BLAS_LIBRARY
NAME "blas"
PATH ${PETSC_ROOT}
PATH_SUFFIXES "lib" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}"
${_no_default_path} )
endif()
${_no_default_path}
)
# print message if there was still no blas found!
if(NOT BLAS_FOUND AND NOT PETSC_BLAS_LIBRARY)
message(STATUS "BLAS not found but required for PETSC")
return()
endif()
list(APPEND CMAKE_REQUIRED_LIBRARIES "${PETSC_BLAS_LIBRARY}")
find_package(LAPACK QUIET)
set(PETSC_LAPACK_LIBRARY "")
if (LAPACK_FOUND)
find_package(LAPACK QUIET)
list(APPEND PETSC_LAPACK_LIBRARY "${LAPACK_LIBRARIES}")
elseif(PETSC_ROOT)
find_library(PETST_LAPACK_LIBRARY
# if LAPACK wasn't found, look for it in PETSC_ROOT
find_library(PETSC_LAPACK_LIBRARY
NAME "lapack"
PATH ${PETSC_ROOT}
PATH_SUFFIXES "lib" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}"
${_no_default_path})
endif()
${_no_default_path}
)
# print message if there was still no blas found!
if(NOT LAPACK_FOUND AND NOT PETSC_LAPACK_LIBRARY)
message(STATUS "LAPACK not found but required for PETSC")
@ -69,19 +72,18 @@ if (X11_FOUND)
list(APPEND PETSC_X11_LIBRARY "${X11_LIBRARIES}")
endif()
list(APPEND CMAKE_REQUIRED_LIBRARIES "${PETSC_X11_LIBRARY}")
# only probe if we haven't a path in our cache
if (Petsc_ROOT)
set (PETSC_ROOT "${Petsc_ROOT}")
endif (Petsc_ROOT)
if (NOT PETSC_NORMAL_INCLUDE_DIR)
find_path (PETSC_NORMAL_INCLUDE_DIR
NAMES "petsc.h"
PATHS ${PETSC_ROOT}
PATH_SUFFIXES "petsc-3.4.4" "include" "petsc"
${_no_default_path}
)
endif (NOT PETSC_NORMAL_INCLUDE_DIR)
# if parallel computing is explicitly enabled - reuse the paths and links from
# OpmMainLib + OpmFind
@ -118,14 +120,13 @@ if(NOT PETSC_MPI_FOUND)
endif()
# look for actual Petsc library
if (NOT PETSC_LIBRARY)
find_library(PETSC_LIBRARY
NAMES "petsc-3.4.3" "petsc-3.4.4" "petsc"
PATHS ${PETSC_ROOT}
PATH_SUFFIXES "lib" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}"
${_no_default_path}
)
endif()
if(NOT PETSC_LIBRARY)
message(STATUS "Could not find the PETSc library")
return()
@ -144,17 +145,9 @@ mark_as_advanced(PETSC_INCLUDE_DIR PETSC_LIBRARY)
# if both headers and library are found, store results
if(PETSC_FOUND)
set(PETSC_INCLUDE_DIRS ${PETSC_INCLUDE_DIR})
set(PETSC_LIBRARIES ${PETSC_LIBRARY})
if (PETSC_BLAS_LIBRARY)
list(APPEND PETSC_LIBRARIES ${PETSC_BLAS_LIBRARY})
endif()
if (PETSC_LAPACK_LIBRARY)
list(APPEND PETSC_LIBRARIES ${PETSC_LAPACK_LIBRARY})
endif()
if (PETSC_X11_LIBRARY)
list(APPEND PETSC_LIBRARIES ${PETSC_X11_LIBRARY})
endif()
endif()