CI: examples in amalgamation build

configure.py

@@ -3440,6 +3440,8 @@ def link_headers(headers, visibility, directory):
         build_paths.lib_sources = amalg_cpp_files
         template_vars['generated_files'] = ' '.join(amalg_cpp_files + amalg_headers)
 
+        link_headers(amalg_headers, 'public', build_paths.public_include_dir)
+
         # Inserting an amalgamation generated using DLL visibility flags into a
         # binary project will either cause errors (on Windows) or unnecessary overhead.
         # Provide a hint

src/examples/amalgamation_header.cpp

@@ -0,0 +1,15 @@
+#include <iostream>
+#if __has_include(<botan/botan_all.h>)
+   #include <botan/botan_all.h>
+
+int main() {
+   std::cout << "Build with amalgamation.\n";
+   std::cout << "That's " << Botan::hex_encode(std::vector<uint8_t>{0xC0, 0x01}) << "\n";
+   return 0;
+}
+#else
+int main() {
+   std::cout << "Build without amalgamation.\n";
+   return 0;
+}
+#endif

src/scripts/ci/setup_gh_actions.sh

@@ -33,7 +33,7 @@ if type -p "apt-get"; then
         # (l)ist mode (avoiding https://github.com/actions/runner-images/issues/9996)
         sudo NEEDRESTART_MODE=l apt-get -qq install valgrind
 
-    elif [ "$TARGET" = "shared" ] || [ "$TARGET" = "examples" ] || [ "$TARGET" = "tlsanvil" ] || [ "$TARGET" = "clang-tidy" ] ; then
+    elif [ "$TARGET" = "shared" ] || [ "$TARGET" = "examples" ] || [ "$TARGET" = "amalgamation" ] || [ "$TARGET" = "tlsanvil" ] || [ "$TARGET" = "clang-tidy" ] ; then
         sudo apt-get -qq install libboost-dev
 
     elif [ "$TARGET" = "clang" ]; then
@@ -138,7 +138,7 @@ else
     export HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=1
     brew install ccache
 
-    if [ "$TARGET" = "shared" ]; then
+    if [ "$TARGET" = "shared" ]  || [ "$TARGET" = "amalgamation" ] ; then
         brew install boost
 
         # On Apple Silicon we need to specify the include directory

src/scripts/ci/setup_gh_actions_after_vcvars.ps1

@@ -6,7 +6,9 @@
 #
 # Botan is released under the Simplified BSD License (see license.txt)
 
-if ($args[0] -in @('shared')) {
+$targets_with_boost = @("shared", "amalgamation")
+
+if ($targets_with_boost -contains $args[0]) {
     nuget install -NonInteractive -OutputDirectory $env:DEPENDENCIES_LOCATION -Version 1.79.0 boost
 
     $boostincdir = Join-Path -Path $env:DEPENDENCIES_LOCATION -ChildPath "boost.1.79.0/lib/native/include"

src/scripts/ci_build.py

@@ -121,7 +121,7 @@ def build_targets(target, target_os):
         yield 'bogo_shim'
     if target in ['sanitizer'] and target_os not in ['windows']:
         yield 'bogo_shim'
-    if target in ['examples']:
+    if target in ['examples', 'amalgamation']:
         yield 'examples'
     if target in ['valgrind', 'valgrind-full']:
         yield 'ct_selftest'
@@ -425,7 +425,7 @@ def sanitize_kv(some_string):
             flags += ['--with-commoncrypto']
 
         def add_boost_support(target, target_os):
-            if target in ['coverage', 'shared']:
+            if target in ['coverage', 'shared', 'amalgamation']:
                 return True
 
             if target == 'sanitizer' and target_os == 'linux':
@@ -781,7 +781,7 @@ def main(args=None):
             if target in ['coverage', 'fuzzers']:
                 make_targets += ['fuzzer_corpus_zip', 'fuzzers']
 
-            if target in ['examples']:
+            if target in ['examples', 'amalgamation']:
                 make_targets += ['examples']
 
             if target in ['valgrind', 'valgrind-full']: