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!

9 files changed, 240 insertions, 3 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
new file mode 100644
index 0000000..cc5af5d
--- /dev/null
+++ b/src/CMakeLists.txt
@@ -0,0 +1,22 @@
+# SPDX-FileCopyrightText: 2024 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+# SPDX-License-Identifier: BSD-3-Clause
+
+add_subdirectory(common)
+
+option(BUILD_BLOGC_MAKE "Build blogc-make binary." OFF)
+option(BUILD_BLOGC_MAKE_EMBEDDED "Build blogc-make embedded into blogc binary." OFF)
+if(BUILD_BLOGC_MAKE OR BUILD_BLOGC_MAKE_EMBEDDED)
+    add_subdirectory(blogc-make)
+endif()
+
+option(BUILD_BLOGC_RUNSERVER "Build blogc-runserver binary." OFF)
+if(BUILD_BLOGC_RUNSERVER)
+    add_subdirectory(blogc-runserver)
+endif()
+
+option(BUILD_BLOGC_GIT_RECEIVER "Build blogc-git-receiver binary." OFF)
+if(BUILD_BLOGC_GIT_RECEIVER)
+    add_subdirectory(blogc-git-receiver)
+endif()
+
+add_subdirectory(blogc)
diff --git a/src/blogc-git-receiver/CMakeLists.txt b/src/blogc-git-receiver/CMakeLists.txt
new file mode 100644
index 0000000..57f5ab6
--- /dev/null
+++ b/src/blogc-git-receiver/CMakeLists.txt
@@ -0,0 +1,41 @@
+# SPDX-FileCopyrightText: 2024 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+# SPDX-License-Identifier: BSD-3-Clause
+
+if(NOT DEFINED HAVE_DIRENT_H OR
+   NOT DEFINED HAVE_ERRNO_H OR
+   NOT DEFINED HAVE_LIBGEN_H OR
+   NOT DEFINED HAVE_SYS_TYPES_H OR
+   NOT DEFINED HAVE_SYS_STAT_H OR
+   NOT DEFINED HAVE_TIME_H OR
+   NOT DEFINED HAVE_UNISTD_H)
+    message(FATAL_ERROR "Missing header dependencies for blogc-git-receiver")
+endif()
+
+add_library(libblogc_git_receiver STATIC
+    post-receive.c
+    post-receive.h
+    pre-receive-parser.c
+    pre-receive-parser.h
+    pre-receive.c
+    pre-receive.h
+    settings.c
+    settings.h
+    shell-command-parser.c
+    shell-command-parser.h
+    shell.c
+    shell.h
+)
+
+target_link_libraries(libblogc_git_receiver PRIVATE
+    libblogc_common
+)
+
+add_executable(blogc-git-receiver
+    main.c
+)
+
+target_link_libraries(blogc-git-receiver PRIVATE
+    libblogc_git_receiver
+)
+
+install(TARGETS blogc-git-receiver)
diff --git a/src/blogc-make/CMakeLists.txt b/src/blogc-make/CMakeLists.txt
new file mode 100644
index 0000000..778db37
--- /dev/null
+++ b/src/blogc-make/CMakeLists.txt
@@ -0,0 +1,50 @@
+# SPDX-FileCopyrightText: 2024 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+# SPDX-License-Identifier: BSD-3-Clause
+
+if(NOT DEFINED HAVE_DIRENT_H OR
+   NOT DEFINED HAVE_FCNTL_H OR
+   NOT DEFINED HAVE_LIBGEN_H OR
+   NOT DEFINED HAVE_SYS_STAT_H OR
+   NOT DEFINED HAVE_SYS_WAIT_H OR
+   NOT DEFINED HAVE_TIME_H OR
+   NOT DEFINED HAVE_UNISTD_H)
+    message(FATAL_ERROR "Missing header dependencies for blogc-make")
+endif()
+
+add_library(libblogc_make STATIC
+    atom.c
+    atom.h
+    ctx.c
+    ctx.h
+    exec.c
+    exec.h
+    exec-native.c
+    exec-native.h
+    httpd.c
+    httpd.h
+    reloader.c
+    reloader.h
+    rules.c
+    rules.h
+    settings.c
+    settings.h
+    utils.c
+    utils.h
+)
+
+target_link_libraries(libblogc_make PRIVATE
+    libblogc_common
+    m
+)
+
+if(NOT BUILD_BLOGC_MAKE_EMBEDDED)
+    add_executable(blogc-make
+        main.c
+    )
+
+    target_link_libraries(blogc-make PRIVATE
+        libblogc_make
+    )
+
+    install(TARGETS blogc-make)
+endif()
diff --git a/src/blogc-make/main.c b/src/blogc-make/main.c
index 5d3f686..7007c1a 100644
--- a/src/blogc-make/main.c
+++ b/src/blogc-make/main.c
@@ -14,6 +14,10 @@
 #include "ctx.h"
 #include "rules.h"
 
+#ifndef PACKAGE_VERSION
+#define PACKAGE_VERSION "Unknown"
+#endif
+
 
 static void
 print_help(void)
@@ -70,7 +74,7 @@ main(int argc, char **argv)
                     print_help();
                     goto cleanup;
                 case 'v':
-                    printf("%s\n", PACKAGE_STRING);
+                    printf("blogc " PACKAGE_VERSION "\n");
                     goto cleanup;
                 case 'D':
                     dev = true;
diff --git a/src/blogc-runserver/CMakeLists.txt b/src/blogc-runserver/CMakeLists.txt
new file mode 100644
index 0000000..09f203e
--- /dev/null
+++ b/src/blogc-runserver/CMakeLists.txt
@@ -0,0 +1,37 @@
+# SPDX-FileCopyrightText: 2022 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+# SPDX-License-Identifier: BSD-3-Clause
+
+if(NOT DEFINED HAVE_ARPA_INET_H OR
+   NOT DEFINED HAVE_FCNTL_H OR
+   NOT DEFINED HAVE_LIMITS_H OR
+   NOT DEFINED HAVE_NETINET_IN_H OR
+   NOT DEFINED HAVE_SIGNAL_H OR
+   NOT DEFINED HAVE_SYS_SOCKET_H OR
+   NOT DEFINED HAVE_SYS_STAT_H OR
+   NOT DEFINED HAVE_SYS_TYPES_H OR
+   NOT DEFINED HAVE_UNISTD_H)
+    message(FATAL_ERROR "Missing header dependencies for blogc-runserver")
+endif()
+
+add_library(libblogc_runserver STATIC
+    httpd-utils.c
+    httpd-utils.h
+    httpd.c
+    httpd.h
+    mime.c
+    mime.h
+)
+
+target_link_libraries(libblogc_runserver PRIVATE
+    libblogc_common
+)
+
+add_executable(blogc-runserver
+    main.c
+)
+
+target_link_libraries(blogc-runserver PRIVATE
+    libblogc_runserver
+)
+
+install(TARGETS blogc-runserver)
diff --git a/src/blogc-runserver/main.c b/src/blogc-runserver/main.c
index ca402ec..8abd83a 100644
--- a/src/blogc-runserver/main.c
+++ b/src/blogc-runserver/main.c
@@ -11,6 +11,10 @@
 #include "../common/utils.h"
 #include "httpd.h"
 
+#ifndef PACKAGE_VERSION
+#define PACKAGE_VERSION "Unknown"
+#endif
+
 
 static void
 print_help(const char *default_host, const char *default_port)
@@ -71,7 +75,7 @@ main(int argc, char **argv)
                     print_help(default_host, default_port);
                     goto cleanup;
                 case 'v':
-                    printf("%s\n", PACKAGE_STRING);
+                    printf("blogc " PACKAGE_VERSION "\n");
                     goto cleanup;
                 case 't':
                     if (argv[i][2] != '\0')
diff --git a/src/blogc/CMakeLists.txt b/src/blogc/CMakeLists.txt
new file mode 100644
index 0000000..bdc3f02
--- /dev/null
+++ b/src/blogc/CMakeLists.txt
@@ -0,0 +1,58 @@
+# SPDX-FileCopyrightText: 2024 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+# SPDX-License-Identifier: BSD-3-Clause
+
+add_library(libblogc STATIC
+    content-parser.c
+    content-parser.h
+    datetime-parser.c
+    datetime-parser.h
+    debug.c
+    debug.h
+    filelist-parser.c
+    filelist-parser.h
+    funcvars.c
+    funcvars.h
+    loader.c
+    loader.h
+    renderer.c
+    renderer.h
+    rusage.c
+    rusage.h
+    source-parser.c
+    source-parser.h
+    sysinfo.c
+    sysinfo.h
+    template-parser.c
+    template-parser.h
+    toctree.c
+    toctree.h
+)
+
+target_link_libraries(libblogc PRIVATE
+    libblogc_common
+    m
+)
+
+add_executable(blogc
+    main.c
+)
+
+target_link_libraries(blogc PRIVATE
+    libblogc
+)
+
+if(BUILD_BLOGC_MAKE_EMBEDDED)
+    target_sources(blogc PRIVATE
+        ../blogc-make/main.c
+    )
+
+    target_link_libraries(blogc PRIVATE
+        libblogc_make
+    )
+
+    target_compile_definitions(blogc PRIVATE
+        MAKE_EMBEDDED
+    )
+endif()
+
+install(TARGETS blogc)
diff --git a/src/blogc/main.c b/src/blogc/main.c
index 1e21464..fb28ca1 100644
--- a/src/blogc/main.c
+++ b/src/blogc/main.c
@@ -156,7 +156,7 @@ main(int argc, char **argv)
                     blogc_print_help();
                     goto cleanup;
                 case 'v':
-                    printf("%s\n", PACKAGE_STRING);
+                    printf("blogc " PACKAGE_VERSION "\n");
                     goto cleanup;
                 case 'd':
                     debug = true;
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
new file mode 100644
index 0000000..1619f95
--- /dev/null
+++ b/src/common/CMakeLists.txt
@@ -0,0 +1,21 @@
+# SPDX-FileCopyrightText: 2024 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+# SPDX-License-Identifier: BSD-3-Clause
+
+add_library(libblogc_common STATIC
+    compat.c
+    compat.h
+    config-parser.c
+    config-parser.h
+    error.c
+    error.h
+    file.c
+    file.h
+    sort.c
+    sort.h
+    stdin.c
+    stdin.h
+    utf8.c
+    utf8.h
+    utils.c
+    utils.h
+)