[gcc r16-839] Conditionalize libgdiagnostic processing on presence

[Richard Biener]

https://gcc.gnu.org/g:d5ff1ccee3f39c4f364f671deb127789b754a6a0

commit r16-839-gd5ff1ccee3f39c4f364f671deb127789b754a6a0
Author: Richard Biener <rguenther@suse.de>
Date:   Fri May 23 13:32:47 2025 +0200

    Conditionalize libgdiagnostic processing on presence
    
    The following makes update_web_docs_git work on branches without
    libgdiagnostic.
    
    maintainer_scripts/
            * update_web_docs_git: Conditionalize libgdiagnostic processing
            on presence.

Diff:
---
 maintainer-scripts/update_web_docs_git | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/maintainer-scripts/update_web_docs_git b/maintainer-scripts/update_web_docs_git
index 424808847b6b..00334ddac7d5 100755
--- a/maintainer-scripts/update_web_docs_git
+++ b/maintainer-scripts/update_web_docs_git
@@ -242,11 +242,15 @@ popd
 cp -a gcc/gcc/jit/docs/_build/html jit
 mkdir -p $DOCSDIR/jit
 
-pushd gcc/gcc/doc/libgdiagnostics
-make html SPHINXBUILD=$SPHINX_VENV/bin/sphinx-build || true
-popd
-cp -a gcc/gcc/doc/libgdiagnostics/_build/html libgdiagnostics
-mkdir -p $DOCSDIR/libgdiagnostics
+LIBGDIAGNOSTICS=
+if test -d gcc/gcc/doc/libgdiagnostics; then
+  pushd gcc/gcc/doc/libgdiagnostics
+  make html SPHINXBUILD=$SPHINX_VENV/bin/sphinx-build || true
+  popd
+  cp -a gcc/gcc/doc/libgdiagnostics/_build/html libgdiagnostics
+  mkdir -p $DOCSDIR/libgdiagnostics
+  LIBGDIAGNOSTICS=libgdiagnostics
+fi
 
 # Work around makeinfo generated file names and references with
 # "_002d" instead of "-".
@@ -298,7 +302,7 @@ done
 # below them, and with some non-HTML files (.png images from us,
 # plus .css and .js supplied by sphinx, and source files, renamed
 # from .rst to .txt).
-find jit libgdiagnostics \
+find jit $LIBGDIAGNOSTICS \
     -name "*.html" -o -name "*.png" \
     -o -name "*.css" -o -name "*.js" \
     -o -name "*.txt" |