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diff --git a/Modules/Platform/UnixPaths.cmake b/Modules/Platform/UnixPaths.cmake
index b9381c3d7d..5e944640b5 100644
--- a/Modules/Platform/UnixPaths.cmake
+++ b/Modules/Platform/UnixPaths.cmake
@@ -26,9 +26,6 @@ get_filename_component(_CMAKE_INSTALL_DIR "${_CMAKE_INSTALL_DIR}" PATH)
# please make sure to keep Help/variable/CMAKE_SYSTEM_PREFIX_PATH.rst
# synchronized
list(APPEND CMAKE_SYSTEM_PREFIX_PATH
- # Standard
- /usr/local /usr /
-
# CMake install location
"${_CMAKE_INSTALL_DIR}"
)
@@ -47,48 +44,49 @@ endif()
# Non "standard" but common install prefixes
list(APPEND CMAKE_SYSTEM_PREFIX_PATH
- /usr/X11R6
- /usr/pkg
- /opt
)
# List common include file locations not under the common prefixes.
+if(DEFINED ENV{NIX_CC}
+ AND IS_DIRECTORY "$ENV{NIX_CC}"
+ AND EXISTS "$ENV{NIX_CC}/nix-support/orig-libc"
+ AND EXISTS "$ENV{NIX_CC}/nix-support/orig-libc-dev")
+ file(STRINGS "$ENV{NIX_CC}/nix-support/orig-libc" _nix_cmake_libc)
+ file(STRINGS "$ENV{NIX_CC}/nix-support/orig-libc-dev" _nix_cmake_libc_dev)
+else()
+ set(_nix_cmake_libc @libc_lib@)
+ set(_nix_cmake_libc_dev @libc_dev@)
+endif()
+
list(APPEND CMAKE_SYSTEM_INCLUDE_PATH
- # X11
- /usr/include/X11
+ "${_nix_cmake_libc_dev}/include"
)
list(APPEND CMAKE_SYSTEM_LIBRARY_PATH
- # X11
- /usr/lib/X11
+ "${_nix_cmake_libc}/lib"
)
list(APPEND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES
- /lib /lib32 /lib64 /usr/lib /usr/lib32 /usr/lib64
+ "${_nix_cmake_libc}/lib"
)
-if(CMAKE_SYSROOT_COMPILE)
- set(_cmake_sysroot_compile "${CMAKE_SYSROOT_COMPILE}")
-else()
- set(_cmake_sysroot_compile "${CMAKE_SYSROOT}")
-endif()
-
# Default per-language values. These may be later replaced after
# parsing the implicit directory information from compiler output.
set(_CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES_INIT
${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}
- "${_cmake_sysroot_compile}/usr/include"
+ "${_nix_cmake_libc_dev}/include"
)
set(_CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES_INIT
${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES}
- "${_cmake_sysroot_compile}/usr/include"
+ "${_nix_cmake_libc_dev}/include"
)
set(_CMAKE_CUDA_IMPLICIT_INCLUDE_DIRECTORIES_INIT
${CMAKE_CUDA_IMPLICIT_INCLUDE_DIRECTORIES}
- "${_cmake_sysroot_compile}/usr/include"
+ "${_nix_cmake_libc_dev}/include"
)
-unset(_cmake_sysroot_compile)
+unset(_nix_cmake_libc)
+unset(_nix_cmake_libc_dev)
# Reminder when adding new locations computed from environment variables
# please make sure to keep Help/variable/CMAKE_SYSTEM_PREFIX_PATH.rst
diff --git a/Modules/Platform/WindowsPaths.cmake b/Modules/Platform/WindowsPaths.cmake
index b9e2f17979..ab517cd4a7 100644
--- a/Modules/Platform/WindowsPaths.cmake
+++ b/Modules/Platform/WindowsPaths.cmake
@@ -70,7 +70,7 @@ endif()
if(CMAKE_CROSSCOMPILING AND NOT CMAKE_HOST_SYSTEM_NAME MATCHES "Windows")
# MinGW (useful when cross compiling from linux with CMAKE_FIND_ROOT_PATH set)
- list(APPEND CMAKE_SYSTEM_PREFIX_PATH /)
+ # list(APPEND CMAKE_SYSTEM_PREFIX_PATH /)
endif()
list(APPEND CMAKE_SYSTEM_INCLUDE_PATH
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