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fatal error if we detect an in-source build #1214

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merged 2 commits into from
Sep 28, 2023
Merged

fatal error if we detect an in-source build #1214

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63857a1
fatal error if we detect an in-source build
tomeichlersmith Sep 27, 2023
c66162c
move check higher so that it actually errors out
tomeichlersmith Sep 27, 2023
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11 changes: 11 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,17 @@
# Set the minimum version of CMake that's required
cmake_minimum_required(VERSION 3.12)

# make sure the source and binary directories are different
# this is here to prevent so-called "in-source" builds where the root directory of the source
# is also the root directory of the build
get_filename_component(srcdir "${CMAKE_SOURCE_DIR}" REALPATH)
get_filename_component(bindir "${CMAKE_BINARY_DIR}" REALPATH)
if ("${srcdir}" STREQUAL "${bindir}")
message(FATAL_ERROR "ldmx-sw does not support in-source builds.
Call 'ldmx cmake ..' from within a 'build/' subdirectory or
Tell cmake to use a different build directory with 'ldmx cmake -B build -S .'")
endif()

# Set the project name
project(LDMX_SW VERSION 3.1.1
DESCRIPTION "The Light Dark Matter eXperiment simulation and reconstruction framework."
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