build: Allow export of environ symbols

laanwj · furszy · commit 32473aab90d3 · 2021-05-01T11:16:17.000-03:00
This export was introduced in bitcoin#17270 which added ``` //! Necessary on some platforms extern char** environ; ```
diff --git a/contrib/devtools/symbol-check.py b/contrib/devtools/symbol-check.py
@@ -47,7 +47,8 @@
 
 # Ignore symbols that are exported as part of every executable
 IGNORE_EXPORTS = {
-'_edata', '_end', '__end__', '_init', '__bss_start', '__bss_start__', '_bss_end__', '__bss_end__', '_fini', '_IO_stdin_used', 'stdin', 'stdout', 'stderr'
+'_edata', '_end', '__end__', '_init', '__bss_start', '__bss_start__', '_bss_end__', '__bss_end__', '_fini', '_IO_stdin_used', 'stdin', 'stdout', 'stderr',
+'environ', '_environ', '__environ',
 }
 READELF_CMD = os.getenv('READELF', '/usr/bin/readelf')
 CPPFILT_CMD = os.getenv('CPPFILT', '/usr/bin/c++filt')

Original file line number	Diff line number	Diff line change
`@@ -47,7 +47,8 @@`
`47`	`47`
`48`	`48`	`# Ignore symbols that are exported as part of every executable`
`49`	`49`	`IGNORE_EXPORTS = {`
`50`		`-'_edata', '_end', '__end__', '_init', '__bss_start', '__bss_start__', '_bss_end__', '__bss_end__', '_fini', '_IO_stdin_used', 'stdin', 'stdout', 'stderr'`
	`50`	`+'_edata', '_end', '__end__', '_init', '__bss_start', '__bss_start__', '_bss_end__', '__bss_end__', '_fini', '_IO_stdin_used', 'stdin', 'stdout', 'stderr',`
	`51`	`+'environ', '_environ', '__environ',`
`51`	`52`	`}`
`52`	`53`	`READELF_CMD = os.getenv('READELF', '/usr/bin/readelf')`
`53`	`54`	`CPPFILT_CMD = os.getenv('CPPFILT', '/usr/bin/c++filt')`