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Do not override compiler if it had been already set

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Before this patch:

    cmake -DCMAKE_C_COMPILER=foo .. # will use foo
    cmake .. # will use clang

After:

    cmake -DCMAKE_C_COMPILER=foo .. # will use foo
    cmake .. # will use foo

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
This commit is contained in:
Azat Khuzhin 2022-07-05 17:02:34 +03:00
parent a4ea7a39aa
commit dc28dfe57e
1 changed files with 3 additions and 2 deletions
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5
PreLoad.cmake
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@ -62,9 +62,10 @@ execute_process(COMMAND uname -m OUTPUT_VARIABLE ARCH)
# By default, prefer clang on Linux
# But note, that you still may change the compiler with -DCMAKE_C_COMPILER/-DCMAKE_CXX_COMPILER.
if (OS MATCHES "Linux"
# some build systems may use CC/CXX env variables
AND "$ENV{CC}" STREQUAL ""
AND "$ENV{CXX}" STREQUAL "")
AND "$ENV{CXX}" STREQUAL ""
AND NOT DEFINED CMAKE_C_COMPILER
AND NOT DEFINED CMAKE_CXX_COMPILER)
find_program(CLANG_PATH clang)
if (CLANG_PATH)
set(CMAKE_C_COMPILER "clang" CACHE INTERNAL "")