build: replace autotools with cmake

this patch removes all the autoconf/automake/libtool build
infrastructure and replaces it with cmake.

notable default behavior changes:
- man pages are not pre-built, and are not built by default, must be
  enabled with `-DBUILD_MANPAGES=ON`.

removed features:
- srpm packaging, to be reintroduced at some point.
- deb packaging, now handled externally via rafaelmartins/deb.rgm.io

more stuff must be missing, please report bugs!

3 files changed, 52 insertions, 0 deletions

diff --git a/cmake/cpack/install_license_and_readme.cmake b/cmake/cpack/install_license_and_readme.cmake
new file mode 100644
index 0000000..c41bc46
--- /dev/null
+++ b/cmake/cpack/install_license_and_readme.cmake
@@ -0,0 +1,20 @@
+# SPDX-FileCopyrightText: 2024 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+# SPDX-License-Identifier: BSD-3-Clause
+
+if(NOT CPACK_SOURCE_INSTALLED_DIRECTORIES)
+    if(CPACK_SYSTEM_NAME MATCHES "^win")
+        set(_license "LICENSE.txt")
+    else()
+        set(_license "LICENSE")
+    endif()
+
+    file(COPY_FILE
+        "${CPACK_RESOURCE_FILE_LICENSE}"
+        "${CMAKE_INSTALL_PREFIX}/${_license}"
+    )
+
+    file(COPY_FILE
+        "${CPACK_RESOURCE_FILE_README}"
+        "${CMAKE_INSTALL_PREFIX}/README.md"
+    )
+endif()
diff --git a/cmake/cpack/install_version.cmake b/cmake/cpack/install_version.cmake
new file mode 100644
index 0000000..c37b786
--- /dev/null
+++ b/cmake/cpack/install_version.cmake
@@ -0,0 +1,9 @@
+# SPDX-FileCopyrightText: 2024 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+# SPDX-License-Identifier: BSD-3-Clause
+
+if(CPACK_SOURCE_INSTALLED_DIRECTORIES)
+    file(WRITE
+        "${CMAKE_INSTALL_PREFIX}/version.cmake"
+        "set(BLOGC_VERSION \"${CPACK_PACKAGE_VERSION}\")"
+    )
+endif()
diff --git a/cmake/scripts/test.sh b/cmake/scripts/test.sh
new file mode 100755
index 0000000..cbf0de4
--- /dev/null
+++ b/cmake/scripts/test.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# SPDX-FileCopyrightText: 2024 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+# SPDX-License-Identifier: BSD-3-Clause
+
+set -Eeuo pipefail
+
+if [[ "${VARIANT:-}" = "memcheck" ]]; then
+	export VALGRIND=valgrind
+	export TESTS_ENVIRONMENT="
+		${VALGRIND} \
+			--tool=memcheck \
+			--leak-check=full \
+			--leak-resolution=high \
+			--num-callers=20 \
+			--error-exitcode=1 \
+			--show-possibly-lost=no"
+fi
+
+if [[ "${1}" == *.sh ]]; then
+	exec "${@}"
+else
+	exec ${TESTS_ENVIRONMENT:-} "${@}"
+fi