Linking fails with cmake when not using a pre-installed abseil AND using C++17

[MarcinZukowski]

I'm having issues linking with abseil when using a pre-installed abseil:

main.cpp:(.text.startup+0x1ed): undefined reference to `bool absl::str_format_internal::FormatArgImpl::Dispatch<std::basic_string_view<char, std::char_traits<char> > >(absl::str_format_internal::FormatArgImpl::Data, absl::str_format_internal::FormatConversionSpec, void*)'

It only happens if I use "preinstalled" abseil AND if I usee C++17.
If I do add_subdirectory it works, or if I change to C++14 it also works.

Here's CMakeLists.txt

project(abseil-bug)

set(CMAKE_CXX_STANDARD 17)

# This works with 17
add_subdirectory(abseil-cpp)

# Fails with 17, works with 14
#set(abseil_prefix ${PROJECT_SOURCE_DIR}/abseil-cpp/install/)
#include(${abseil_prefix}/lib64/cmake/absl/abslConfig.cmake)

# Fails with 17, works with 14
#find_package(absl REQUIRED PATHS ${PROJECT_SOURCE_DIR}/abseil-cpp/install/)

add_executable(abseil-bug main.cpp)
target_link_libraries(abseil-bug absl::strings absl::str_format)

and here's main.cpp

#include "absl/strings/ascii.h"
#include "absl/strings/str_format.h"

int main()
{
    std::string x = absl::StrFormat("Why? %s\n", absl::StripAsciiWhitespace(" foo "));
    printf("%s\n", x.c_str());    
}

and the Makefile that drives it all

default: all

.ONESHELL:
all: abseil-cpp
	mkdir -p build
	cd build
	cmake -DCMAKE_BUILD_TYPE=Release ../
	make -j 8
	
abseil-cpp:
	git clone --depth 1 https://github.com/abseil/abseil-cpp
	cd abseil-cpp
	mkdir build && cd build
	cmake -DCMAKE_INSTALL_PREFIX=../install -DCMAKE_BUILD_TYPE=Release ../
	make -j 8 
	make install

clean: 
	rm -rf abseil-cpp build

[derekmauro]

https://github.com/abseil/abseil-cpp/blob/master/FAQ.md#what-is-abi-and-why-dont-you-recommend-using-a-pre-compiled-version-of-abseil