meson: make nm binary optional

This makes nm not required, but used if found. In general I imagine that
this means that on windows nm wont be found, and on other platforms it
will.

v2: - fix gbm and egl symbols check tests to only be run if nm is found
    - reword commit message to reflect the code change

Reviewed-by: Eric Anholt <[email protected]>

4 files changed, 4 insertions, 4 deletions

diff --git a/src/egl/meson.build b/src/egl/meson.build
index 38ffb512f1c..3a0fd01d244 100644
--- a/src/egl/meson.build
+++ b/src/egl/meson.build
@@ -192,7 +192,7 @@ pkg.generate(
   extra_cflags : gl_pkgconfig_c_flags,
 )
 
-if with_tests
+if with_tests and prog_nm.found()
   if with_glvnd
     # TODO: add glvnd symbol check
   else
diff --git a/src/gbm/meson.build b/src/gbm/meson.build
index b2ad6673592..b7262c59802 100644
--- a/src/gbm/meson.build
+++ b/src/gbm/meson.build
@@ -66,7 +66,7 @@ pkg.generate(
   libraries_private : '-ldl',  # FIXME: autotools lists this a incomplete
 )
 
-if with_tests
+if with_tests and prog_nm.found()
   test(
     'gbm-symbols-check',
     find_program('gbm-symbols-check'),
diff --git a/src/mapi/es1api/meson.build b/src/mapi/es1api/meson.build
index 8e9587e3580..53bdc16d946 100644
--- a/src/mapi/es1api/meson.build
+++ b/src/mapi/es1api/meson.build
@@ -52,7 +52,7 @@ pkg.generate(
   libraries_private : gl_priv_libs,
 )
 
-if with_tests
+if with_tests and prog_nm.found()
   test(
     'es1-ABI-check',
     find_program('ABI-check'),
diff --git a/src/mapi/es2api/meson.build b/src/mapi/es2api/meson.build
index 5b2c52b024d..d374bd80849 100644
--- a/src/mapi/es2api/meson.build
+++ b/src/mapi/es2api/meson.build
@@ -52,7 +52,7 @@ pkg.generate(
   libraries_private : gl_priv_libs,
 )
 
-if with_tests
+if with_tests and prog_nm.found()
   test(
     'es2-ABI-check',
     find_program('ABI-check'),