[PATCH v1 02/25] structured-logging: add STRUCTURED_LOGGING=1 to Makefile

[git@jeffhostetler.com]

From: Jeff Hostetler <jeffhost@microsoft.com>

Teach the Makefile to take STRUCTURED_LOGGING=1 variable to
compile in/out structured logging feature.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
---
 Makefile             |  8 ++++++++
 structured-logging.c |  9 +++++++++
 structured-logging.h | 13 +++++++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 structured-logging.c
 create mode 100644 structured-logging.h

diff --git a/Makefile b/Makefile
index 39ca66b..ccc39bf 100644
--- a/Makefile
+++ b/Makefile
@@ -442,6 +442,8 @@ all::
 # When cross-compiling, define HOST_CPU as the canonical name of the CPU on
 # which the built Git will run (for instance "x86_64").
 #
+# Define STRUCTURED_LOGGING if you want structured logging to be available.
+#
 # Define RUNTIME_PREFIX to configure Git to resolve its ancillary tooling and
 # support files relative to the location of the runtime binary, rather than
 # hard-coding them into the binary. Git installations built with RUNTIME_PREFIX
@@ -955,6 +957,7 @@ LIB_OBJS += split-index.o
 LIB_OBJS += strbuf.o
 LIB_OBJS += streaming.o
 LIB_OBJS += string-list.o
+LIB_OBJS += structured-logging.o
 LIB_OBJS += submodule.o
 LIB_OBJS += submodule-config.o
 LIB_OBJS += sub-process.o
@@ -1326,6 +1329,10 @@ ifdef ZLIB_PATH
 endif
 EXTLIBS += -lz
 
+ifdef STRUCTURED_LOGGING
+	BASIC_CFLAGS += -DSTRUCTURED_LOGGING
+endif
+
 ifndef NO_OPENSSL
 	OPENSSL_LIBSSL = -lssl
 	ifdef OPENSSLDIR
@@ -2543,6 +2550,7 @@ GIT-BUILD-OPTIONS: FORCE
 	@echo TAR=\''$(subst ','\'',$(subst ','\'',$(TAR)))'\' >>$@+
 	@echo NO_CURL=\''$(subst ','\'',$(subst ','\'',$(NO_CURL)))'\' >>$@+
 	@echo NO_EXPAT=\''$(subst ','\'',$(subst ','\'',$(NO_EXPAT)))'\' >>$@+
+	@echo STRUCTURED_LOGGING=\''$(subst ','\'',$(subst ','\'',$(STRUCTURED_LOGGING)))'\' >>$@+
 	@echo USE_LIBPCRE1=\''$(subst ','\'',$(subst ','\'',$(USE_LIBPCRE1)))'\' >>$@+
 	@echo USE_LIBPCRE2=\''$(subst ','\'',$(subst ','\'',$(USE_LIBPCRE2)))'\' >>$@+
 	@echo NO_LIBPCRE1_JIT=\''$(subst ','\'',$(subst ','\'',$(NO_LIBPCRE1_JIT)))'\' >>$@+
diff --git a/structured-logging.c b/structured-logging.c
new file mode 100644
index 0000000..702fd84
--- /dev/null
+++ b/structured-logging.c
@@ -0,0 +1,9 @@
+#if !defined(STRUCTURED_LOGGING)
+/*
+ * Structured logging is not available.
+ * Stub out all API routines.
+ */
+
+#else
+
+#endif
diff --git a/structured-logging.h b/structured-logging.h
new file mode 100644
index 0000000..c9e8c1d
--- /dev/null
+++ b/structured-logging.h
@@ -0,0 +1,13 @@
+#ifndef STRUCTURED_LOGGING_H
+#define STRUCTURED_LOGGING_H
+
+#if !defined(STRUCTURED_LOGGING)
+/*
+ * Structured logging is not available.
+ * Stub out all API routines.
+ */
+
+#else
+
+#endif /* STRUCTURED_LOGGING */
+#endif /* STRUCTURED_LOGGING_H */
-- 
2.9.3