# Notes about this file - read before proceeding! While we have already provided the gdb/gdbserver-15 statically compiled binaries for you, some people might want to compile it without our build scripts, or compile a newer version of gdb in the future :). This rest of the file contains a documentation of the compilation process, in order to help you out. NOTE: The compilation guide describes the compilation process in order to create a minimal-working version of gdb. Our build-scripts also provides further capabilites to gdb, such as python and xml support, which are not documented in this file. ## In this file Environment variables are denoted by <...> throughout this file. Please note that when specifying a compilation dir throughout the compilation process (via the environment variable), DO NOT use relative pathing, or special bash characters such as `~`. Relative pathing / special bash characters will not get parsed correctly! Instead, always use absolute paths. Examples to the throughout the script: - - arm-linux-gnueabi-gcc - - arm-linux-gnueabi-g++ - - arm-linux-gnueabi - - /home/username/projects/libgmp-x.y.z/build-arm/ Environment info: - glibc version: 2.39-0ubuntu8.3 (NOTE: When i compiled gdb-15 using an older glibc, such as the one i had in my ubuntu-20.04 machine, i received a segfault in gdb, so the libc version is important!). # Compiling gdb statically to the host platform ## 1) Compiling iconv While compiling iconv is not a must, the libc-provided iconv (a utility to convert between encodings) may fail on different architectures, at least in my experience. Thus, I recommended using a custom libiconv and compiling it into gdb. Download the source from https://github.com/roboticslibrary/libiconv.git Make sure to check out to a stable tag (in my case - v1.17). Work according to the following steps: 1. run `./gitsub.sh pull` 2. run `./autogen.sh` to create the configure script from configure.sh. 3. create a build dir (e.g build), and then cd into it. 4. run `../configure --enable-static` 5. run `cp -r ./include ./lib/.libs/` 6. run `mkdir ./lib/.libs/lib/` 7. run `cp ./lib/.libs/libiconv.a ./lib/.libs/lib/` ## 2) Compiling gdb Clone gdb from from my forked respository - https://github.com/guyush1/binutils-gdb/tree/gdb-static. Make sure to check out to the **gdb-static** branch - this branch contains all of the changes i had to do to the build system in order for it to compile gdb statically. Work according to the following steps: 1. create a build dir. 2. run `../configure --enable-static --with-static-standard-libraries --disable-tui --disable-inprocess-agent --with-libiconv-prefix=/lib/.libs/ --with-libiconv-type=static` 3. run `make all-gdb -j$(nproc)` - for gdbserver, run `make all-gdbserver -j$(nproc)`. gdb will sit under gdb/gdb. gdbserver will sit under gdbserver/gdbserver. # Cross compiling gdb statically to other architectures. Cross compiling gdb statically is a bit more complicated then regular static compilation. In order to cross compile gdb statically, we will need to compile libgmp and libmpfr as well as iconv. ## 1) Compiling iconv Work according to the same process as described under the compilation to the host platform, aside from the configure script: IV) run `../configure --enable-static CC= CXX= --host=` ## 2) Compiling libgmp Download and extract the latest edition from https://gmplib.org/. I used the 6.3.0 edition. Work according to the following steps: 1. Create a build dir and cd into it. 2. run `../configure CC= CXX= --enable-static --host=` 3. run `make -j$(nproc)` 4. run `mkdir ./.libs/include/` 5. run `cp gmp.h ./.libs/include/` 6. run `mkdir ./.libs/lib` 7. run `cp ./.libs/libgmp.a ./.libs/lib` ## 3) Compiling libmpfr Download and extract the latest edition from https://www.mpfr.org/. I used the 4.2.1 edition. Work according to the following steps: 1. Create a build dir and cd into it. 2. run `../configure CC= CXX= --enable-static --with-gmp-build= --host=` 3. run `make -j$(nproc)` 4. run `mkdir ./src/.libs/lib` 5. run `cp ./src/.libs/libmpfr.a ./src/.libs/lib` 6. run `mkdir ./src/.libs/include` 7. run `cp ../src/mpfr.h ./src/.libs/include/` ## 4) Compiling gdb Work according to the same process as described under the compilation to the host platform, aside from the configure script: 2. run `../configure --enable-static --with-static-standard-libraries --disable-tui --disable-inprocess-agent --with-libiconv-prefix=/lib/.libs/ --with-libiconv-type=static --with-gmp=/.libs/ --with-mpfr=/src/.libs/ CC= CXX= --host=`