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CMake cleanup (#1060)

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- Move all install logic inside gsl_install.cmake
  - This makes reading the logic easier, and avoids the enable language
    issue with `GNUInstallDirs` by having it included after the project
    call
- Have all functions inside gsl_functions.cmake
- Use CMake idiom PROJECT_IS_TOP_LEVEL
- Update README.md
This commit is contained in:
jpr42
2022-10-18 11:05:09 -07:00
committed by GitHub
parent 991fa6682e
commit c52bad36aa
5 changed files with 57 additions and 95 deletions
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include/CMakeLists.txt
+3 -10
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@@ -1,4 +1,3 @@
# Add include folders to the library and targets that consume it
# the SYSTEM keyword suppresses warnings for users of the library
#
@@ -7,14 +6,8 @@
#
# IE:
# #include <gsl/gsl>
if(GSL_STANDALONE_PROJECT)
target_include_directories(GSL INTERFACE
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
if(PROJECT_IS_TOP_LEVEL)
target_include_directories(GSL INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>)
else()
target_include_directories(GSL SYSTEM INTERFACE
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
target_include_directories(GSL SYSTEM INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>)
endif()