pkg-config is required

[BigSamu]

Hi all,

I am trying to install libmacaroons in my local machine (Mac OS Catalina), but I am having issues, due to an error telling me that pkg-config is not found. Don't know what is happening but I have already installed all the requirements for this library as you can check below:

 ~ autoconf --version
autoconf (GNU Autoconf) 2.71
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv3+/Autoconf: GNU GPL version 3 or later
<https://gnu.org/licenses/gpl.html>, <https://gnu.org/licenses/exceptions.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by David J. MacKenzie and Akim Demaille.
➜  ~ automake --version
automake (GNU automake) 1.16.4
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv2+: GNU GPL version 2 or later <https://gnu.org/licenses/gpl-2.0.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Tom Tromey <[email protected]>
       and Alexandre Duret-Lutz <[email protected]>.
 ➜  ~ glibtool --version
glibtool (GNU libtool) 2.4.6
Written by Gordon Matzigkeit, 1996

Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
➜  ~ pkg-config --version
0.29

And here below, the outputs I get when I trying to install libmacaroons. Thinking the problem is related to the m4 macros that for some reason the installation script is not able to find in my computer. Any suggestion to solve this issue?

  ~ git clone https://github.com/rescrv/libmacaroons.git
Cloning into 'libmacaroons'...
remote: Enumerating objects: 615, done.
remote: Counting objects: 100% (5/5), done.
remote: Compressing objects: 100% (5/5), done.
remote: Total 615 (delta 1), reused 0 (delta 0), pack-reused 610
Receiving objects: 100% (615/615), 248.70 KiB | 684.00 KiB/s, done.
Resolving deltas: 100% (362/362), done.
➜  ~ cd  libmacaroons 
➜  libmacaroons git:(master) autoreconf -i                                       
glibtoolize: putting auxiliary files in '.'.
glibtoolize: copying file './ltmain.sh'
glibtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
glibtoolize: copying file 'm4/libtool.m4'
glibtoolize: copying file 'm4/ltoptions.m4'
glibtoolize: copying file 'm4/ltsugar.m4'
glibtoolize: copying file 'm4/ltversion.m4'
glibtoolize: copying file 'm4/lt~obsolete.m4'
configure.ac:69: warning: The macro `AC_PYTHON_DEVEL' is obsolete.
configure.ac:69: You should run autoupdate.
m4/ax_python_devel.m4:72: AC_PYTHON_DEVEL is expanded from...
configure.ac:69: the top level
configure.ac:16: installing './compile'
configure.ac:16: installing './config.guess'
configure.ac:16: installing './config.sub'
configure.ac:12: installing './install-sh'
configure.ac:12: installing './missing'
Makefile.am: installing './depcomp'
➜  libmacaroons git:(master) autoupdate
➜  libmacaroons git:(master) ✗ autoreconf -i
➜  libmacaroons git:(master) ✗ ./configure --enable-python-bindings                
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a race-free mkdir -p... ./install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether make supports nested variables... (cached) yes
checking for a Python interpreter with version >= 2.6... python
checking for python... /usr/bin/python
checking for python version... 2.7
checking for python prefix... /System/Library/Frameworks/Python.framework/Versions/2.7
checking for python exec_prefix... /System/Library/Frameworks/Python.framework/Versions/2.7
checking for python platform... darwin
checking for python script directory... /Library/Python/2.7/site-packages
checking for python extension module directory... /Library/Python/2.7/site-packages
checking build system type... x86_64-apple-darwin19.6.0
checking host system type... x86_64-apple-darwin19.6.0
checking how to print strings... printf
checking whether make supports the include directive... yes (GNU style)
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether gcc accepts -g... yes
checking for gcc option to enable C11 features... none needed
checking whether gcc understands -c and -o together... yes
checking dependency style of gcc... gcc3
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by gcc... /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld
checking if the linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) is GNU ld... no
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 196608
checking how to convert x86_64-apple-darwin19.6.0 file names to x86_64-apple-darwin19.6.0 format... func_convert_file_noop
checking how to convert x86_64-apple-darwin19.6.0 file names to toolchain format... func_convert_file_noop
checking for /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... no
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for a working dd... /bin/dd
checking how to truncate binary pipes... /bin/dd bs=4096 count=1
checking for mt... no
checking if : is a manifest tool... no
checking for dsymutil... dsymutil
checking for nmedit... nmedit
checking for lipo... lipo
checking for otool... otool
checking for otool64... no
checking for -single_module linker flag... yes
checking for -exported_symbols_list linker flag... yes
checking for -force_load linker flag... yes
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... yes
checking for gcc option to produce PIC... -fno-common -DPIC
checking if gcc PIC flag -fno-common -DPIC works... yes
checking if gcc static flag -static works... no
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin19.6.0 dyld
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking for gcc... (cached) gcc
checking whether the compiler supports GNU C... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking for gcc option to enable C11 features... (cached) none needed
checking whether gcc understands -c and -o together... (cached) yes
checking dependency style of gcc... (cached) gcc3
checking for g++... g++
checking whether the compiler supports GNU C++... yes
checking whether g++ accepts -g... yes
checking for g++ option to enable C++11 features... none needed
checking dependency style of g++... gcc3
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld
checking if the linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) is GNU ld... no
checking whether the g++ linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) supports shared libraries... yes
checking for g++ option to produce PIC... -fno-common -DPIC
checking if g++ PIC flag -fno-common -DPIC works... yes
checking if g++ static flag -static works... no
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin19.6.0 dyld
checking how to hardcode library paths into programs... immediate
checking pkg-config m4 macros... no
configure: error: 
pkg-config is required.
See pkg-config.freedesktop.org

[trmeade]

This is the same exact issue I am seeing on raspberry pi. Will there be any response to this issue?

[trmeade]

since I know that the M4 macros are not missing on my system, and I don't have time to track down this configuration script issue, I changed the line in the configure.ac file to make it pass:

// Original line
-if test m4_ifdef([PKG_CHECK_MODULES], [yes], [no]) == yes; then

//My hack
+if test m4_ifdef([PKG_CHECK_MODULES], [yes], [no]) == no; then

This fixed the issue for me so I could finish installing and building the library