find_*: Add support for REQUIRED keyword

In the same spirit as the REQUIRED keyword on find_package, this will
stop cmake execution with an error on a failed find_program, find_file,
find_path or find_library.

5 files changed, 19 insertions, 0 deletions

diff --git a/Tests/RunCMake/find_program/Required-result.txt b/Tests/RunCMake/find_program/Required-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/find_program/Required-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/find_program/Required-stderr.txt b/Tests/RunCMake/find_program/Required-stderr.txt
new file mode 100644
index 0000000..214a8d4
--- /dev/null
+++ b/Tests/RunCMake/find_program/Required-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at Required.cmake:9 \(find_program\):
+  Could not find PROG_AandB using the following names: testAandB
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/find_program/Required-stdout.txt b/Tests/RunCMake/find_program/Required-stdout.txt
new file mode 100644
index 0000000..3c8f1b5
--- /dev/null
+++ b/Tests/RunCMake/find_program/Required-stdout.txt
@@ -0,0 +1 @@
+-- PROG_A='[^']*/Tests/RunCMake/find_program/A/testA'
diff --git a/Tests/RunCMake/find_program/Required.cmake b/Tests/RunCMake/find_program/Required.cmake
new file mode 100644
index 0000000..a75aa53
--- /dev/null
+++ b/Tests/RunCMake/find_program/Required.cmake
@@ -0,0 +1,12 @@
+find_program(PROG_A
+  NAMES testA
+  PATHS ${CMAKE_CURRENT_SOURCE_DIR}/A
+  NO_DEFAULT_PATH
+  REQUIRED
+  )
+message(STATUS "PROG_A='${PROG_A}'")
+
+find_program(PROG_AandB
+  NAMES testAandB
+  REQUIRED
+  )
diff --git a/Tests/RunCMake/find_program/RunCMakeTest.cmake b/Tests/RunCMake/find_program/RunCMakeTest.cmake
index 6903f05..0ff9a97 100644
--- a/Tests/RunCMake/find_program/RunCMakeTest.cmake
+++ b/Tests/RunCMake/find_program/RunCMakeTest.cmake
@@ -4,6 +4,7 @@ run_cmake(EnvAndHints)
 run_cmake(DirsPerName)
 run_cmake(NamesPerDir)
 run_cmake(RelAndAbsPath)
+run_cmake(Required)
 
 if(CMAKE_SYSTEM_NAME MATCHES "^(Windows|CYGWIN)$")
   run_cmake(WindowsCom)