tools build: Add test to check if slang.h is in /usr/include/slang/

A few odd old distros (rhel5, 6, yeah, lots of those out in use, in many
cases we want to use upstream perf on it) have the slang header files in
/usr/include/slang/, so add a test that will be performed only when
test-all.c (the one with the most common sane settings) fails, either
because we're in one of these odd distros with slang/slang.h or because
something else failed (say libelf is not present).

So for the common case nothing changes, no additional test is performed.

Next step is to check in perf the result of these tests.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Fixes: 1955c8cf5e26 ("perf tools: Don't hardcode host include path for libslang")
Link: https://lkml.kernel.org/n/tip-2sy7hbwkx68jr6n97qxgg0c6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index 50377cc2f5f99f36e353b170f1b559f322c9e8f2..86b793dffbc45f06dae59dde8a9125b8432bf9fd 100644 (file)
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -53,6 +53,7 @@ FEATURE_TESTS_BASIC :=                  \
         libpython                       \
         libpython-version               \
         libslang                        \
+        libslang-include-subdir         \
         libcrypto                       \
         libunwind                       \
         pthread-attr-setaffinity-np     \
@@ -114,7 +115,6 @@ FEATURE_DISPLAY ?=              \
          numa_num_possible_cpus \
          libperl                \
          libpython              \
-         libslang               \
          libcrypto              \
          libunwind              \
          libdw-dwarf-unwind     \

diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 7ef7cf04a292b8dcfb64272ee088406c1f589122..0658b8cd0e534e92739bdce12beb8e673b03af60 100644 (file)
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -31,6 +31,7 @@ FILES=                                          \
          test-libpython.bin                     \
          test-libpython-version.bin             \
          test-libslang.bin                      \
+         test-libslang-include-subdir.bin       \
          test-libcrypto.bin                     \
          test-libunwind.bin                     \
          test-libunwind-debug-frame.bin         \
@@ -184,6 +185,9 @@ $(OUTPUT)test-libaudit.bin:
 $(OUTPUT)test-libslang.bin:
        $(BUILD) -lslang
 
+$(OUTPUT)test-libslang-include-subdir.bin:
+       $(BUILD) -lslang
+
 $(OUTPUT)test-libcrypto.bin:
        $(BUILD) -lcrypto
 

diff --git a/tools/build/feature/test-libslang-include-subdir.c b/tools/build/feature/test-libslang-include-subdir.c
new file mode 100644 (file)
index 0000000..3ea47ec
--- /dev/null
+++ b/tools/build/feature/test-libslang-include-subdir.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <slang/slang.h>
+
+int main(void)
+{
+       return SLsmg_init_smg();
+}