Cannot find 'gflags/gflags.h' while building library OSX

Question

I'm trying to build the library which included 'gflags/gflags.h' and am having trouble getting it to find.

I installed gflags and glog with homebrew.

CMake output says:

-- Found installed version of gflags: /usr/local/lib/cmake/gflags
-- Detected gflags version: 2.2.2
-- Found Gflags: /usr/local/include
-- Found Glog: /usr/local/include

While running "cmake" everything is okay there is no error. But when I run "make install" it cannot build and it says "fatal error: 'gflags/gflags.h' file not found"

How can I build the library which requires gflags in OsX?

Sandie

try to see inside of Cmake file if Gflags path is set manually? – Amygdalin

In Cmake file there is only find_package(Gflags REQUIRED) find_package(Glog REQUIRED) – Sandie

Could you provide the CmakeList somehow? My guess is that you are not linking the gflags directory for your executable. – Armelda

Please provide your CMake code, including the code showing how you use the Gflags variables after the calls to find_package(). Without seeing the code you are using, we can only guess what the problem might be... – Saucier

@ThomasCaissard @squareskittles Thank you guys It was problem in include_directories – Sandie

Answer 1

First, find your package

find_package(Gflags REQUIRED)
find_package(Glog REQUIRED)

And then assign these library's header files to your executable include path

include_directories(${GLOG_INCLUDE_DIRS} ${GFLAGS_INCLUDE_DIRS})

Make sure that these variables are set properly

message(STATUS "GFLAGS include path: ${GFLAGS_INCLUDE_DIRS}")

Saucier

gflag and glog provide Modern CMake Targets gflags::gflags et glog::glog -> stop using deprecated *_INCLUDE_DIRS. Thx – Johen