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include/prereq.mk: add RequireCHeader helper

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Add RequireCHeader helper that will try to compile a fake c program with
the requested header included.

This is useful to check if a specific header is present in the system
without checking for the specific path.

This is a generilized version of the current ncurses test.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Christian Marangi
2023-01-09 14:23:23 +01:00
parent f1aa8f34ff
commit 35135842ca
1 changed files with 12 additions and 0 deletions
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12
include/prereq.mk
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@@ -63,6 +63,18 @@ define RequireHeader
$$(eval $$(call Require,$(1),$(2))) $$(eval $$(call Require,$(1),$(2)))
endef endef
# 1: header to test
# 2: failure message
# 3: optional compile time test
# 4: optional link library test (example -lncurses)
define RequireCHeader
define Require/$(1)
echo 'int main(int argc, char **argv) { $(3); return 0; }' | gcc -include $(1) -x c -o $(TMP_DIR)/a.out - $(4)
endef
$$(eval $$(call Require,$(1),$(2)))
endef
define CleanupPython2 define CleanupPython2
define Require/python2-cleanup define Require/python2-cleanup
if [ -f "$(STAGING_DIR_HOST)/bin/python" ] && \ if [ -f "$(STAGING_DIR_HOST)/bin/python" ] && \