[petsc-users] issue with cmake

[Alfredo Jaramillo]

Dear developers,

Please excuse me if this issue is a bit off-topic.
I'm trying to compile dolfinx. There is one compilation step where cmake is
used with the CMakeLists.txt in this link:

https://urldefense.us/v3/__https://github.com/FEniCS/dolfinx/blob/main/cpp/CMakeLists.txt__;!!G_uCfscf7eWS!fO0ZzQfd4dg7-t5nIfqoY8yaP-aPJfvnkuYMQy6S4_BkbdH7bUVHSl331_PvqeNJtWBCKqR1lKQXd5uktKEo0WvNO5JaujY$ 

where PETSC configuration is got by doing:

===================================================
# Check for PETSc
find_package(PkgConfig REQUIRED)
set(ENV{PKG_CONFIG_PATH}

"$ENV{PETSC_DIR}/$ENV{PETSC_ARCH}/lib/pkgconfig:$ENV{PETSC_DIR}/lib/pkgconfig:$ENV{PKG_CONFIG_PATH}"
)
pkg_search_module(PETSC REQUIRED IMPORTED_TARGET PETSc>=3.15 petsc>=3.15)

# Check if PETSc build uses real or complex scalars (this is configured in
# DOLFINxConfig.cmake.in)
include(CheckSymbolExists)
set(CMAKE_REQUIRED_INCLUDES ${PETSC_INCLUDE_DIRS})
===================================================

However, compilation fails as it is not able to find some headers, I
printed the variable PETSC_INCLUDE_DIRS and it is empty. So to get it to
compile I included the line:

include_directories($ENV{PETSC_DIR}/include
$ENV{PETSC_DIR}/$ENV{PETSC_ARCH}/include)

My env variables are well set. I'm attaching my configure.log file.

Could this be related to PETSC configuration, and its interaction with
cmake?

Thank you so much.
Alfredo
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