Add libbutl-pkg-config source subdirectory

This is an additional (to libbutl) utility library which contains the source
code of libpkg-config configured and tuned for our needs.

1 files changed, 41 insertions, 0 deletions

diff --git a/libbutl-pkg-config/libpkg-config/config.h b/libbutl-pkg-config/libpkg-config/config.h
new file mode 100644
index 0000000..c1c5e8d
--- /dev/null
+++ b/libbutl-pkg-config/libpkg-config/config.h
@@ -0,0 +1,41 @@
+/* file      : libpkg-config/config.h.in -*- C -*-
+ * license   : ISC; see accompanying COPYING file
+ */
+#ifndef LIBPKG_CONFIG_CONFIG_H
+#define LIBPKG_CONFIG_CONFIG_H
+
+#if defined(__linux__)
+#  include <features.h> /* __GLIBC__, __GLIBC_MINOR__ */
+#endif
+
+/*
+ * strndup() is not present on Windows while strl*() are only present on
+ * *BSD and MacOS.
+ *
+ */
+#if !defined(_WIN32)
+#  define HAVE_STRNDUP 1
+#endif
+
+/*
+ * GNU libc added strlcpy() and strlcat() in version 2.38 (in anticipation
+ * of their addition to POSIX).
+ */
+#if defined(__FreeBSD__) || \
+    defined(__OpenBSD__) || \
+    defined(__NetBSD__)  || \
+    defined(__APPLE__)   || \
+    (defined(__GLIBC__)       && \
+     defined(__GLIBC_MINOR__) && \
+     (__GLIBC__  > 2 || __GLIBC__ == 2 && __GLIBC_MINOR__ >= 38))
+#  define HAVE_STRLCPY 1
+#  define HAVE_STRLCAT 1
+#endif
+
+#define LIBPKG_CONFIG_PROJECT_URL "https://github.com/build2/libpkg-config"
+
+#define PKG_CONFIG_DEFAULT_PATH ""
+#define SYSTEM_INCLUDEDIR       ""
+#define SYSTEM_LIBDIR           ""
+
+#endif /* LIBPKG_CONFIG_CONFIG_H */