doc: add pkg-config to the build dependencies

tools/Makefile uses pkg-config.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/doc/build/gcc.rst b/doc/build/gcc.rst
index e03e0b94600b0ffa6d08f427d6b820cfaf33bf53..0cdc307d57bfded2000aaf6e07f5284d9cce23ab 100644 (file)
--- a/doc/build/gcc.rst
+++ b/doc/build/gcc.rst
@@ -26,8 +26,8 @@ Depending on the build targets further packages maybe needed
     sudo apt-get install bc bison build-essential coccinelle \
       device-tree-compiler dfu-util efitools flex gdisk graphviz imagemagick \
       liblz4-tool libguestfs-tools libncurses-dev libpython3-dev libsdl2-dev \
-      libssl-dev lz4 lzma lzma-alone openssl python3 python3-coverage \
-      python3-pycryptodome python3-pyelftools python3-pytest \
+      libssl-dev lz4 lzma lzma-alone openssl pkg-config python3 \
+      python3-coverage python3-pycryptodome python3-pyelftools python3-pytest \
       python3-sphinxcontrib.apidoc python3-sphinx-rtd-theme python3-virtualenv \
       swig