当我拥有此CMakeLists.txt时，我正尝试链接至系统库I/art: Do partial code cache collection, code=26KB, data=29KB
After code cache collection, code=25KB, data=28KB
Increasing code cache capacity to 128KB
D/Constraints: On Create View Holder: called
D/Constraints: On Create View Holder: called
D/Constraints: On Create View Holder: called
V/FA: Inactivity, disconnecting from the service
I/art: Do partial code cache collection, code=57KB, data=60KB
I/art: After code cache collection, code=57KB, data=60KB
Increasing code cache capacity to 256KB
D/Constraints: recommended : Chili Paneer(Dry)
/usr/lib/x86_64-linux-gnu/libtcmalloc.so.4（也尝试过cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
project(all)
find_library(TCMALLOC_LIB NAMES tcmalloc)
if(TCMALLOC_LIB)
message("Found TCMALLOC_LIB: ${TCMALLOC_LIB}")
else()
message(FATAL_ERROR "TCMALLOC_LIB library not found")
endif()
）
我明白了
find_library(TCMALLOC_LIB tcmalloc)如果有的话
CMake Error at CMakeLists.txt:13 (message):
TCMALLOC_LIB library not found
一切都很好：find_library(TCMALLOC_LIB NAMES libtcmalloc.so.4)
我做错什么了吗？为什么需要精确指定文件名？如何调试Found TCMALLOC_LIB: /usr/lib/x86_64-linux-gnu/libtcmalloc.so.4？
答案 0 :(得分：1)
正如@Tsyvarev在评论中提到的，事实证明cmake找不到该库，因为我只是“部分”安装了该库，因此应该已经安装了-dev版本（libgoogle-perftools-dev）。 / p>
好吧，事实证明tcmalloc不是常规/常规库，也就是说，它没有指向libtcmalloc.so的{{1}}符号链接，这就是cmake找不到它的原因。
.so.4？我找到了一种通过find_library调试find_library的方法：
strace从此$ rm -rf ./* && strace cmake ../scripts/ 2>&1 | grep tcmalloc
access("/usr/local/nvidia/bin/libtcmalloc.so", R_OK) = -1 ENOENT (No such file or directory)
access("/usr/local/cuda/bin/libtcmalloc.so", R_OK) = -1 ENOENT (No such file or directory)
access("/usr/local/sbin/libtcmalloc.so", R_OK) = -1 ENOENT (No such file or directory)
access("/usr/local/bin/libtcmalloc.so", R_OK) = -1 ENOENT (No such file or directory)
...
<many lines skipped>
...
输出中，我们看到该cmake，实际上是尝试在strace之前并附加lib，但它没有尝试在任何版本之前。
现在，如果我们看另一个“普通”库：
.so我们将看到它确实安装了# locate protobuf | grep "\.so"
/usr/lib/x86_64-linux-gnu/libprotobuf.so
/usr/lib/x86_64-linux-gnu/libprotobuf.so.17
/usr/lib/x86_64-linux-gnu/libprotobuf.so.17.0.0
符号链接，而.so没有安装：
tcmalloc