The Makefile supports a target called 'hdr-check', which checks if
individual header files can be independently compiled. Let's port this
functionality to Meson, our new build system too. The implementation
resembles that of the Makefile and provides the same check.
Since meson builds are out-of-tree, header dependencies are not
automatically met. So unlike the Makefile version, we also need to add
the required dependencies.
Also add the 'xdiff/' dir to the list of 'third_party_sources' as those
headers must be skipped from the checks too!
Signed-off-by: Karthik Nayak <karthik.188@xxxxxxxxx>
---
meson.build | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 70 insertions(+)
diff --git a/meson.build b/meson.build
index 3ca5d01071..b1be2b3cbb 100644
--- a/meson.build
+++ b/meson.build
@@ -646,6 +646,7 @@ third_party_sources = [
':!t/unit-tests/clar',
':!t/unit-tests/clar',
':!t/t[0-9][0-9][0-9][0-9]*',
+ ':!xdiff',
]
if git.found()
@@ -655,6 +656,10 @@ if git.found()
endforeach
endif
+generated_headers = [
+ 'command-list.h',
+]
+
if not get_option('breaking_changes')
builtin_sources += 'builtin/pack-redundant.c'
endif
@@ -669,6 +674,7 @@ builtin_sources += custom_target(
],
env: script_environment,
)
+generated_headers += 'config-list.h'
builtin_sources += custom_target(
input: 'Documentation/githooks.adoc',
@@ -681,6 +687,7 @@ builtin_sources += custom_target(
],
env: script_environment,
)
+generated_headers += 'hook-list.h'
# This contains the variables for GIT-BUILD-OPTIONS, which we use to propagate
# build options to our tests.
@@ -1995,6 +2002,69 @@ endif
subdir('contrib')
+exclude_from_check_headers = generated_headers
+exclude_from_check_headers += [
+ 'compat/',
+ 'unicode-width.h',
+]
+
+if sha1_backend != 'openssl'
+ exclude_from_check_headers += 'sha1/openssl.h'
+endif
+if sha256_backend != 'openssl'
+ exclude_from_check_headers += 'sha256/openssl.h'
+endif
+if sha256_backend != 'nettle'
+ exclude_from_check_headers += 'sha256/nettle.h'
+endif
+if sha256_backend != 'gcrpyt'
+ exclude_from_check_headers += 'sha256/gcrypt.h'
+endif
+
+if git.found() and compiler.get_argument_syntax() == 'gcc'
+ hco_targets = []
+ foreach h : headers
+ skip_header = false
+ foreach exclude : exclude_from_check_headers
+ if h.startswith(exclude)
+ skip_header = true
+ break
+ endif
+ endforeach
+
+ if skip_header
+ continue
+ endif
+
+ hcc = custom_target(
+ input: h,
+ output: h.underscorify() + 'cc',
+ command: [
+ shell,
+ '-c',
+ 'echo \'#include "git-compat-util.h"\' > @OUTPUT@ && echo \'#include "' + h + '"\' >> @OUTPUT@'
+ ]
+ )
+
+ hco = custom_target(
+ input: hcc,
+ output: fs.replace_suffix(h.underscorify(), '.hco'),
+ command: [
+ compiler.cmd_array(),
+ libgit_c_args,
+ '-I', meson.project_source_root(),
+ '-I', meson.project_source_root() / 't/unit-tests',
+ '-o', '/dev/null',
+ '-c', '-xc',
+ '@INPUT@'
+ ]
+ )
+ hco_targets += hco
+ endforeach
+
+ alias_target('hdr-check', hco_targets)
+endif
+
foreach key, value : {
'DIFF': diff.full_path(),
'GIT_SOURCE_DIR': meson.project_source_root(),
--
2.48.1
