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| author | Guy Harris <gharris@sonic.net> | 2023-02-15 15:10:35 -0800 |
|---|---|---|
| committer | Guy Harris <gharris@sonic.net> | 2023-02-15 15:10:35 -0800 |
| commit | 31762a4eb365011bb1862be817040d3f9ca72e64 (patch) | |
| tree | 971e93a5a47a486950458b2405b35105da54405c /CMakeLists.txt | |
| parent | 65ed3c48ead34cb1c916fd27f51539897a0ae236 (diff) | |
| download | tcpdump-31762a4eb365011bb1862be817040d3f9ca72e64.tar.gz | |
CMake: improve the comment before project(tcpdump C). [skip ci]
Note that, even if there weren't horrible consequences to either 1)
having no C++ compiler, 2) setting an instruction set bit width in
CFLAGS but not in CXXFLAGS, or 3) having C and C++ compilers with
different default instruction set bit-widths, specifying that we're
C-only avoids wasting time looking for a C++ compiler.
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index f904e76b..52c039f2 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -86,7 +86,13 @@ set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE) set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules) # -# OK, this is a royal pain. +# We explicitly indicate what languages are used in tcpdump to avoid +# checking for a C++ compiler. +# +# One reason to avoid that check is that there's no need to waste +# configuration time performing it. +# +# Another reason is that: # # CMake will try to determine the sizes of some data types, including # void *, early in the process of configuration; apparently, it's done @@ -112,9 +118,6 @@ set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules) # building 32-bit, the size for C++ will win, and, again, hilarity # will ensue. # -# So we *explicitly* state that only C is used; there is currently no -# C++ code in tcpdump. -# project(tcpdump C) # |